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#1930 From: John McCandless <londonparks1003@...>
Date: Tue Dec 15, 2009 3:44 am
Subject: Re: Mil-std-1300 		londonparks1003
Online Now Online Now
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OK I'll ask!  Whats and "Mil-Std-1300"  Drawing? 
 
John


The Outlaw


From: arockyway2go <arockyway2go@...>
To: 4A032@yahoogroups.com
Sent: Fri, November 27, 2009 10:16:08 AM
Subject: [4A032] Mil-std-1300

 

Does anyone have a ledgible copy of mil-std-1300 drawings for these engines? Everything i've found on the web is not readable when trying to read the dimensions.



Reply | Forward | Messages in this Topic (2)
#1929 From: John McCandless <londonparks1003@...>
Date: Tue Dec 15, 2009 2:04 am
Subject: Re: Carburetors 		londonparks1003
Online Now Online Now
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Joe and everyone else having Carb Problems this is Prime Lines on line Catalog
 
John


The Outlaw


From: John McCandless <londonparks1003@...>
To: 4A032@yahoogroups.com
Sent: Mon, December 14, 2009 7:31:25 PM
Subject: Re: [4A032] Carburetors

 

Joe,
The Carb is the same on the 032, 016, and the 08.
Saturn has Carbs but no kits.  I'll send you mine if  you can't
find another.  I took it apart to clean it and the Cork Bowl
Gasket is shot.
 
John


The Outlaw


From: Joe Foley <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Mon, December 14, 2009 6:33:27 PM
Subject: Re: [4A032] Carburetors

 

Nope,
 
So far it seems to be the needle valve that has become hard as a rock and refuses to seal dependably.
 
This isn't so bad, they should be commonly available,,, ,, somewhere!

2/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Saturday, December 12, 2009, 1:32 PM

 
Joe,
Have you tried Sea Foam and /or the other one I can't remember the name.
 
John


The Outlaw


From: Joe Foley <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Sat, December 12, 2009 10:35:45 AM
Subject: Re: [4A032] Carburetors

 
Not yet, I just happen to have one on a Kubota genset that is giving me the SAME problems!!!
 
Joe
 
 


--- On Fri, 12/11/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Friday, December 11, 2009, 8:15 PM

 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 
The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe








Reply | Forward | Messages in this Topic (8)
#1928 From: John McCandless <londonparks1003@...>
Date: Tue Dec 15, 2009 1:31 am
Subject: Re: Carburetors 		londonparks1003
Online Now Online Now
Send Email Send Email
 
Joe,
The Carb is the same on the 032, 016, and the 08.
Saturn has Carbs but no kits.  I'll send you mine if  you can't
find another.  I took it apart to clean it and the Cork Bowl
Gasket is shot.
 
John


The Outlaw


From: Joe Foley <redmenaced@...>
To: 4A032@yahoogroups.com
Sent: Mon, December 14, 2009 6:33:27 PM
Subject: Re: [4A032] Carburetors

 

Nope,
 
So far it seems to be the needle valve that has become hard as a rock and refuses to seal dependably.
 
This isn't so bad, they should be commonly available,,, ,, somewhere!

2/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Saturday, December 12, 2009, 1:32 PM

 
Joe,
Have you tried Sea Foam and /or the other one I can't remember the name.
 
John


The Outlaw


From: Joe Foley <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Sat, December 12, 2009 10:35:45 AM
Subject: Re: [4A032] Carburetors

 
Not yet, I just happen to have one on a Kubota genset that is giving me the SAME problems!!!
 
Joe
 
 


--- On Fri, 12/11/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Friday, December 11, 2009, 8:15 PM

 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 
The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe







Reply | Forward | Messages in this Topic (8)
#1927 From: Joe Foley <redmenaced@...>
Date: Tue Dec 15, 2009 12:33 am
Subject: Re: Carburetors 		redmenaced
Offline Offline
Send Email Send Email
 
Nope,
 
So far it seems to be the needle valve that has become hard as a rock and refuses to seal dependably.
 
This isn't so bad, they should be commonly available,,,,, somewhere!

2/09, John McCandless <londonparks1003@...> wrote:

From: John McCandless <londonparks1003@...>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups.com
Date: Saturday, December 12, 2009, 1:32 PM

 
Joe,
Have you tried Sea Foam and /or the other one I can't remember the name.
 
John


The Outlaw


From: Joe Foley <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Sat, December 12, 2009 10:35:45 AM
Subject: Re: [4A032] Carburetors

 
Not yet, I just happen to have one on a Kubota genset that is giving me the SAME problems!!!
 
Joe
 
 


--- On Fri, 12/11/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Friday, December 11, 2009, 8:15 PM

 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 
The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe






Reply | Forward | Messages in this Topic (8)
#1926 From: "arockyway2go" <arockyway2go@...>
Date: Fri Nov 27, 2009 4:16 pm
Subject: Mil-std-1300 		arockyway2go
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Does anyone have a ledgible copy of mil-std-1300 drawings for these engines?
Everything i've found on the web is not readable when trying to read the
dimensions.

Reply | Forward | Messages in this Topic (2)
#1925 From: "sandmanis36" <redeyedwiggler@...>
Date: Sat Dec 5, 2009 11:54 pm
Subject: I thought I'd share my find with you all 		sandmanis36
Offline Offline
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4a032 Gasket set!!

  I've been looking for a few months and found some here!!

http://www.armysurpluswarehouse.com/product/3-kw-generator-engine-gasket-overhau\
l-kit-4464.cfm

Reply | Forward | Messages in this Topic (1)
#1924 From: John McCandless <londonparks1003@...>
Date: Sat Dec 12, 2009 6:32 pm
Subject: Re: Carburetors 		londonparks1003
Online Now Online Now
Send Email Send Email
 
Joe,
Have you tried Sea Foam and /or the other one I can't remember the name.
 
John


The Outlaw


From: Joe Foley <redmenaced@...>
To: 4A032@yahoogroups.com
Sent: Sat, December 12, 2009 10:35:45 AM
Subject: Re: [4A032] Carburetors

 

Not yet, I just happen to have one on a Kubota genset that is giving me the SAME problems!!!
 
Joe
 
 


--- On Fri, 12/11/09, John McCandless <londonparks1003@ yahoo.com> wrote:

From: John McCandless <londonparks1003@ yahoo.com>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups. com
Date: Friday, December 11, 2009, 8:15 PM

 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 
The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe





Reply | Forward | Messages in this Topic (8)
#1923 From: Joe Foley <redmenaced@...>
Date: Sat Dec 12, 2009 4:35 pm
Subject: Re: Carburetors 		redmenaced
Offline Offline
Send Email Send Email
 
Not yet, I just happen to have one on a Kubota genset that is giving me the SAME problems!!!
 
Joe
 
 


--- On Fri, 12/11/09, John McCandless <londonparks1003@...> wrote:

From: John McCandless <londonparks1003@...>
Subject: Re: [4A032] Carburetors
To: 4A032@yahoogroups.com
Date: Friday, December 11, 2009, 8:15 PM

 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@yahoo. com>
To: 4A032@yahoogroups. com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 
The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe




Reply | Forward | Messages in this Topic (8)
#1922 From: John McCandless <londonparks1003@...>
Date: Sat Dec 12, 2009 3:25 am
Subject: Re: Carburetors 		londonparks1003
Online Now Online Now
Send Email Send Email
 
Geo B may be able to help you.  I got two beautiful carbs from him for my 042 and 084.
 
John


The Outlaw


From: John McCandless <londonparks1003@...>
To: 4A032@yahoogroups.com
Sent: Fri, December 11, 2009 7:15:38 PM
Subject: Re: [4A032] Carburetors

Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@...>
To: 4A032@yahoogroups.com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 

The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe




Reply | Forward | Messages in this Topic (8)
#1921 From: John McCandless <londonparks1003@...>
Date: Sat Dec 12, 2009 1:15 am
Subject: Re: Carburetors 		londonparks1003
Online Now Online Now
Send Email Send Email
 
Have you tried a 28 or 30 Mikuini?  They work on the "KISS" Principle.
 
John


The Outlaw


From: redmenaced <redmenaced@...>
To: 4A032@yahoogroups.com
Sent: Fri, December 11, 2009 6:59:24 PM
Subject: [4A032] Carburetors

 

The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe



Reply | Forward | Messages in this Topic (8)
#1920 From: larry ice <ltcice@...>
Date: Sat Dec 12, 2009 3:06 am
Subject: Fw: Carburetors 		ltcice
Offline Offline
Send Email Send Email
 
Anyone tried using a motorcycle carb yet?
Iceman

----- Forwarded Message ----
From: redmenaced <redmenaced@...>
To: 4A032@yahoogroups.com
Sent: Fri, December 11, 2009 7:59:24 PM
Subject: [4A032] Carburetors

 

The latest is that Marvel-Schebler has been sold at least five times recently, still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right, leaks and flooding.

Joe



Reply | Forward | Messages in this Topic (1)
#1919 From: "redmenaced" <redmenaced@...>
Date: Sat Dec 12, 2009 12:59 am
Subject: Carburetors 		redmenaced
Offline Offline
Send Email Send Email
  
The latest is that Marvel-Schebler has been sold at least five times recently,
still working on WHO owns them now.

Has anyone experimented with fuel injection on this engine?

No luck with getting mine going again, trying to get the carb to work right,
leaks and flooding.

Joe

Reply | Forward | Messages in this Topic (8)
#1918 From: Joe Foley <redmenaced@...>
Date: Thu Dec 10, 2009 12:08 am
Subject: Re: Re: Carburetors again! 		redmenaced
Offline Offline
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Yup, that's what I was thinking.
 
They must be out of business, no listing on the Internet.
 
Any ideas for a replacement?
 
These look kind of like an Onan genset carb, the  float isn't very much different than the Kohler carb on a 7 Hp Cub Cadet.
 
Joe

--- On Wed, 12/9/09, mdlbldrmatt135 <mdlbldrmatt135@...> wrote:

From: mdlbldrmatt135 <mdlbldrmatt135@...>
Subject: [4A032] Re: Carburetors again!
To: 4A032@yahoogroups.com
Date: Wednesday, December 9, 2009, 10:52 AM

 
I've only found 1 manuf. tag on any of the Carb's I've pulled off mt 1a08, 2a016 and 4a032 engines..... .. and it was Marvel.



Reply | Forward | Messages in this Topic (3)
#1917 From: Joe Foley <redmenaced@...>
Date: Wed Dec 9, 2009 11:52 pm
Subject: Re: Re: Alcohol fuel problems.... 		redmenaced
Offline Offline
Send Email Send Email
 
 
still looking, will check again tomorrow.
 
Joe


--- On Wed, 12/9/09, mdlbldrmatt135 <mdlbldrmatt135@...> wrote:

From: mdlbldrmatt135 <mdlbldrmatt135@...>
Subject: [4A032] Re: Alcohol fuel problems....
To: 4A032@yahoogroups.com
Date: Wednesday, December 9, 2009, 10:57 AM

 
Has anyone found replacement floats or full rebuild kits??


Reply | Forward | Messages in this Topic (11)
#1916 From: "mdlbldrmatt135" <mdlbldrmatt135@...>
Date: Wed Dec 9, 2009 3:57 pm
Subject: Re: Alcohol fuel problems.... 		mdlbldrmatt135
Online Now Online Now
Send Email Send Email
  
Has anyone found replacement floats or full rebuild kits??




--- In 4A032@yahoogroups.com, "David Clark" <skypupdave@...> wrote:
>
> I haven't posted much either but your comments, Bruce, struck a chord. I use
> a 2a016 on a log splitter and it has similar fuel and electrical systems to
> four cylinder engines. I, too, had trouble with the carb float. It usually
> stuck in the up position. At the time I blamed it on bad quality control or
> bad design, though, but now I see that it was just the fuel. I sanded the
> float a bit so it would fit properly and since the foam seemed to be of the
> closed-cell variety I didn't try to seal it. The carb has been working for
> two year that way so maybe you won't have to seal yours. I run the same fuel
> through a 4a032 and haven't had trouble yet. Maybe that float is just a bit
> smaller.
> Dave
>
>
> On Wed, Dec 10, 2008 at 10:28 AM, Bruce Hotz <shotz@...> wrote:
>
> >   Hi Guys!!
> >
> > It has been a while since I have had anything of importance to post,
> > but I do have one now.
> >
> > Since I can no longer find pump gas without alcohol in it, I was
> > recently forced to fill the tank on the 4A032 air compressor with 10%
> > alcohol fuel.
> >
> > I was expecting problems with gum and varnish being dissolved inside
> > the fuel tank and plugging up the works, so added a large fuel filter
> > between the tank and the carb. It seems to be doing it's job so
> > far, but I will probably have to change it frequently for the next
> > several years, or replace the old fuel tank. The same problem arose
> > with my lawn mower....I replaced the mower.
> >
> > Another more serious problem has occured however. The fuel float
> > inside the carburetor on this engine is a plastic urethane foam
> > float. The plastic float has swollen from the alcohol content in
> > the gasoline, and expanded untill it was stuck against the side of
> > the float chamber. This caused my engine to die from lack of fuel
> > with the needle valve stuck shut. A more serious problem would
> > arrise from a float that stuck with the needle in the open
> > position....flooding, spillage and possible fire???? I shall have
> > to refresh myself with the float bowl venting on this carb....I
> > forget where it goes. Either way, engine problems.
> >
> > My temporary solution was to file down the edges of the float untill
> > clearance was obtained again, and seal the cut edges with permatex
> > aviation non-hardening gasket sealer. It is one of the few things
> > that I can think of that should be impervious to alcohol over the
> > very long run. Old school would have been to use gasket shellac,
> > which is impervious to gasoline....but unfortunatley not to
> > alcohol. Same with most epoxy's......long term they will dissolve
> > with alcohol. Eventually I will replace the plastic float with a
> > copper float....when I get around to it.
> >
> > So, if you are being forced to run alcohol thru your fuel system, add
> > a filter and check the float inside the carb!!!!!! If you intend
> > flying, driving, boating etc, replace the plastic float for sure!
> > For non-critical applications, check for peace of mind.
> >
> > Bruce
> > List Admin
> >
> >
> >
>

Reply | Forward | Messages in this Topic (11)
#1915 From: "mdlbldrmatt135" <mdlbldrmatt135@...>
Date: Wed Dec 9, 2009 3:52 pm
Subject: Re: Carburetors again! 		mdlbldrmatt135
Online Now Online Now
Send Email Send Email
  
I've only found 1 manuf. tag on any of the Carb's I've pulled off mt 1a08, 2a016
and 4a032 engines.......  and it was Marvel.

Reply | Forward | Messages in this Topic (3)
#1914 From: "sandmanis36" <redeyedwiggler@...>
Date: Sat Dec 5, 2009 3:16 am
Subject: Re: 4A032 stock hp documentation? 		sandmanis36
Offline Offline
Send Email Send Email
  
http://groups.yahoo.com/group/4A032/attachments/folder/1100372140/item/list


--- In 4A032@yahoogroups.com, "usjunkmail@..." <usjunkmail@...> wrote:
>
> Hi there, could someone be so kind and direct me where I might find
documentation on the "stock" horsepower rating for this engine?  I currently use
the 4A032 model in a two engine hovercraft application Pictures can be seen
here: http://www.bigracing.com/scat/
>
> Together with a 13hp lift engine, I was wondering if I might be able to
compete in the under 35hp racing class?
>
> Any information that would help me to convince the hovercraft racing officials
is greatly appreciated.
>
> Thanks.
>

Reply | Forward | Messages in this Topic (3)
#1913 From: John McCandless <londonparks1003@...>
Date: Thu Dec 3, 2009 9:38 pm
Subject: Re: 4A032 stock hp documentation? 		londonparks1003
Online Now Online Now
Send Email Send Email
 
Manual says 6HP at 5/10,000 ASL Everyone says 10 to 12? at Sea Level.
Try printing the Manual Cover.
 
John


The Outlaw


From: "usjunkmail@..." <usjunkmail@...>
To: 4A032@yahoogroups.com
Sent: Wed, December 2, 2009 7:00:07 PM
Subject: [4A032] 4A032 stock hp documentation?

 

Hi there, could someone be so kind and direct me where I might find documentation on the "stock" horsepower rating for this engine? I currently use the 4A032 model in a two engine hovercraft application Pictures can be seen here: http://www.bigracing.com/scat/

Together with a 13hp lift engine, I was wondering if I might be able to compete in the under 35hp racing class?

Any information that would help me to convince the hovercraft racing officials is greatly appreciated.

Thanks.



Reply | Forward | Messages in this Topic (3)
#1912 From: "redmenaced" <redmenaced@...>
Date: Fri Dec 4, 2009 12:20 am
Subject: Carburetors again! 		redmenaced
Offline Offline
Send Email Send Email
  
Were all of the carbs built by the same manufacturer?

Marvel Schebler?  Cage code 79960?  Does anyone have any other cage codes
showing on their carbs?

I'm trying to put together a rebuild kit from stock parts, any suggestions?

Thanks,

Joe

Reply | Forward | Messages in this Topic (3)
#1911 From: "usjunkmail@..." <usjunkmail@...>
Date: Thu Dec 3, 2009 1:00 am
Subject: 4A032 stock hp documentation? 		usjunkmail...
Offline Offline
Send Email Send Email
  
Hi there, could someone be so kind and direct me where I might find
documentation on the "stock" horsepower rating for this engine?  I currently use
the 4A032 model in a two engine hovercraft application Pictures can be seen
here: http://www.bigracing.com/scat/

Together with a 13hp lift engine, I was wondering if I might be able to compete
in the under 35hp racing class?

Any information that would help me to convince the hovercraft racing officials
is greatly appreciated.

Thanks.

Reply | Forward | Messages in this Topic (3)
#1910 From: "redmenaced" <redmenaced@...>
Date: Thu Nov 19, 2009 3:07 am
Subject: Marvel Schebler carb? 		redmenaced
Offline Offline
Send Email Send Email
  
Anyone have any information on a rebuild kit for a Marvel Schebler HMC-10
carburetor?

Did any other companies manufacture the same carb for these engines?

I only have one carb that has a manufacturer's tag on it.

Does anyone have tags that have other manufacturers on it?

Is there a carb that will bolt up in place of this carb?

Thanks,

Joe

Reply | Forward | Messages in this Topic (1)
#1909 From: Joe Foley <redmenaced@...>
Date: Thu Nov 5, 2009 2:36 pm
Subject: Re: Only two cylinders! 		redmenaced
Offline Offline
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I 've leaned in that direction, too.

I pulled the carb and found a puddle of fuel in the manifold.  After tearing the carb apart I was not able to get the needle valve to shut off completely.  The float had expanded in one place that touched the top section of the carb.  That still yielded no good results in operation.  It may be that the valves are gunked up too much.

Joe



--- On Thu, 11/5/09, Isaksson Roger <scratchdeeper@...> wrote:

From: Isaksson Roger <scratchdeeper@...>
Subject: Re: [4A032] Only two cylinders!
To: 4A032@yahoogroups.com
Date: Thursday, November 5, 2009, 4:57 AM

 

Hi Joe,
 
Stuck float will throw off the fuel/air ratio, and if you have found a  lot of crud, you have most probably been running a very rich mixture.
 
I was in Utah some years back an walked the yard of a surplus dealer. He had a lot of used 4AO32's lying around in different conditions. 
 
I wanted the best copies that he had, and  took me the time to take off a couple of exhaust pipes, or intake knees.
 
 A few of them had black crud build up on the inside of these engines to the point that I suspect that THAT is the reason they were pulled out of service, and ended up in a surplus yard.
 
Intake might look a bit cruddy, but especially look at the exhaust side. Pull the exhaust manifold, and look at the exhaust valve stem.
 
If you see what I saw, exhaust valve stems that was so full of deposits, that it had increased the diameter of the exhaust stem about two to three times, then there is really no way around it....Pull the heads, pull the valves, clean everything, and put it back together again.
 
And yes, of course, fix the carb, that caused all this to begin with.
 
Roger
 
 
 


--- On Mon, 11/2/09, Joe Foley <redmenaced@yahoo. com> wrote:

From: Joe Foley <redmenaced@yahoo. com>
Subject: Re: [4A032] Only two cylinders!
To: 4A032@yahoogroups. com
Date: Monday, November 2, 2009, 6:57 AM

 
thanks Roger,

That's what boggles my little mind!  I HAVE a good hot spark!

There is a lot of carbon on the front plugs because the float sticks, I'm trying to determine if that has caused the valves to crud up and not close tightly.

Joe



--- On Mon, 11/2/09, Isaksson Roger <scratchdeeper@ yahoo.com> wrote:

From: Isaksson Roger <scratchdeeper@ yahoo.com>
Subject: Re: [4A032] Only two cylinders!
To: 4A032@yahoogroups. com
Date: Monday, November 2, 2009, 3:27 AM

 
If both cylinders are affected I suspect an ignition problem.
 
Check if you got a spark by holding a sparkplug ( plugged in from it's designated sparkplug wire) against the engine, then turn the engine over. You should be able to see a spark, if not there is your problem.
 
Even if you have two electronic modules, one on each side, they are wired in such a way that they will give the front pair one spark, one for each (front pair) cylinder, at the same time, because the front pair will reach TDC at the same time.
 
180 degrees later the rear pair will get a spark.( again, both cylinders also at the same time)
 
The ignition sequence is therefore.
 
1. Front pair fires both at the same time.
 
180 deg later
 
2. Rear pair fires both at the same time.
 
Then it repeats itself, that is the full firing sequence on the AO32.
 
So....each cylinder will see a spark each 360 degree.
 
As this is a fourstroke, getting it's work done every second revolution, one spark is a waste spark firing unharmly at the very end of the engines exhaust stroke.
 
The combustion sequence is a different sequence.
 
I leave it to you to figure out how we can have a different spark, and combustin sequence.
It's a clever little engine.
 
Around the little magnetic wheel you will find two coils, each one is serving one pair of cylinders. They are sitting 180 degrees apart, ...or...opposite each other.
 
Check if you have a bad coil. from the coils, there is a lot of wires going crisscross through switches, and into the two modules youre talking about, that are mounted on the cylinder heads.
 
If you have already switched out those, and had no results, I would suggest to go backwards, from there, towards the magnet coils.
 
It might be a bad coil, but it might as well be a very very simple thing like a wire connector fallen off, broken wire, a mouse have been eating off insulation from a wire, grounding one section of the system, a bad switch or connection to the switch.
 
Good luck
 
Roger
 


--- On Sun, 11/1/09, Joe Foley <redmenaced@yahoo. com> wrote:

From: Joe Foley <redmenaced@yahoo. com>
Subject: Re: [4A032] Only two cylinders!
To: 4A032@yahoogroups. com
Date: Sunday, November 1, 2009, 6:25 PM

 
Might be valves not closing tight, I'll check.

It wasn't burning oil so I don't suspect compression problems,... yet.

The coils are arranged per side, not per end.   That is right coil to left bank, left coil to right bank.

I swapped out the modules on the sides of the engine, too,.. to no good effect.

Thanks, keep thinking,

Joe



--- On Sun, 11/1/09, Bob E. <ethertonr@webtv. net> wrote:

From: Bob E. <ethertonr@webtv. net>
Subject: Re: [4A032] Only two cylinders!
To: 4A032@yahoogroups. com
Date: Sunday, November 1, 2009, 7:47 PM

 
Hold your thumb over the plug hole and feel the compression. It should be hard to keep it on the hole when turning the engine over.

You may have a coil problem, I'm not sure how they are arranged to the cylinders.

You could also have a stuck valve/valves.

Bob






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