[Farmall] Never heard such a bang

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Someone may have shot at you!
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----- Original Message ----- 
From: "Ray Burrill" <burrill at xplornet.com>
To: "'Farmall/IHC mailing list'" <farmall at lists.antique-tractor.com>
Sent: Tuesday, March 05, 2013 10:21 AM
Subject: Re: [Farmall] Never heard such a bang


> What about valve timing? Is it possible that something has jumped and you
> are getting a spark when the exhaust valve is open.
>
> Ray
>
> -----Original Message-----
> From: farmall-bounces at lists.antique-tractor.com
> [mailto:farmall-bounces at lists.antique-tractor.com] On Behalf Of Ben Wagner
> Sent: March 4, 2013 09:25 PM
> To: Farmall/IHC mailing list; Antique tractor email discussion group
> Subject: Re: [Farmall] Never heard such a bang
>
> Here's today's update on the Super A: I have ruled out now:
>
> ~Valves. Adjustments are correct, compression is fairly equal (+/- 5)
> across all 4 cyls.
> ~Fuel.  All new fuel in the tractor.  All I get now is a bang a bit 
> sooner!
> ~Spark. Jumping a 1/4 air gap with no problems at the plug.  New spark
> plugs.
> ~Carburetor.  Nothing changed: cleaned and checked for blockage.
> ~Air bath.  Changed oil and checked to verify screen is clean.
>
> I'm not done yet, but I am getting desperate.  All of us easterners will
> be receiving a snowstorm on Wednesday: I need a snowplow tractor!!  I'll
> keep everyone posted.
>
> Ben W.
>
> www.oldpathsequipment.com
> Mt. Solon, Virginia
> Antique Machinery Repair and Restoration
>
> On 3/2/2013 12:46 PM, Tony Flint - Flint Services wrote:
>> I'd do a compression test on each cylinder just to verify that you don't
>> have a valve that's burnt or broken.  Not likely, but it will at least
> rule
>> out the valves as a possibility, even if they check out from an 
>> adjustment
>> standpoint.
>>
>> I've also seen plugs that have a nice healthy spark *out* of the cylinder
>> not work while *in* the cylinder under compression.  And it sounds like
>> you've replaced everything but the plugs and wires, so do you have any
>> spares you can swap around?
>>
>> And I'll assume the impulse coupling is working, and not that you're
>> managing to just spin it fast enough?
>>
>> Lastly, could you also have bad fuel?
>>
>>
>> Tony Flint
>> Flint Services
>> 417-782-4335
>>
>>
>>
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>
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