[Farmall] Difficult F14

[birddog]

Ross,

Just some thoughts:

Verify proper cooling system flow thru the head.  A blockage of rust or 
??? could allow head to overheat and cause over expansion of the stems 
and guides.

Stand by and run it with the cover off  for a few hours.  Use a good 
grade 10w30 motor oil instead of WD 40 when it starts to skip.  Maybe 
they will eventually clean up.  Maybe something like Mystery oil would 
work better???

When a cylinder starts to skip, get the tip of a screw driver blade or 
similar tool under the valve spring and pry up a little.  Try both 
intake and exhaust to see which one improves firing.  This would help 
determine it it has some weak valve springs. 

I have forgotten if you have tried some sort of lubricant in the fuel.  
If they are simply sticky, that might help.

My first concern would be the cooling system.  If  the head is 
overheating, it could cause cracking or other damage.

Just my penny and one half.
Charlie

After thought:
I don't want to jump into the deep end here, but it has been known to 
happen that someone has used an incorrect head gasket which is not 
punched  with all the holes to match all of the head to block water 
passages.

That is something to tuck away for the event that all else fails and the 
head has to be removed.








Ross Long wrote:
> I found out what the problems was, it was sticking valves.  They seem real
> loose when not running, but I started it without the valve cover on and
> sprayed wd-40 on the valves when it started to miss and that stopped the
> miss.  A fee minutes after I spray the valves it will start to miss again.  
>
> Anyone have any ideas how to get these valves not to stick.  It was
> overhauled and the head was redone shortly before it was stored for a number
> of years.  They must be a little too tight.
>
> Ross
>
>
>
> -----Original Message-----
> From: farmall-bounces at lists.antique-tractor.com
> [mailto:farmall-bounces at lists.antique-tractor.com] On Behalf Of John Hall
> Sent: Friday, May 05, 2006 5:52 PM
> To: Farmall/IHC mailing list
> Subject: Re: [Farmall] Difficult F14
>
> Looking back at the original post, you said you are definetly losing #4 
> followed by an intermittent 1 and 3, correct? I can't see how that could be 
> fuel related nor could it be the mag unless it was in the cap, wires or 
> plugs. Try this next time it goes to missing--check the fire at the plugs by
>
> grounding a screwdriver to the frame. You need about 3/16 to 1/4 spark jump.
>
> If that checks out then spray some WD-40 in the intake with it running and 
> see if it helps.
>
> As far as the fuel pump goes I agree with everything that has been said. I 
> have had problems with the check valves, trash, and a worn out pushrod.  And
>
> a busted diaphragm on another tractor with a similair pump. But in all of 
> those cases the tractor wouldn't run at all.
>
> One final thought, is the intake manifold tight? You did say the tractor had
>
> been recently rebuilt didn't you? You may be fighting bad mechanic work from
>
> the last guy.
>
>
> Just some thoughts and ramblings.
>
> John Hall 
>
>
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