ford 641 rough start in cold weather

Hi all.
Any tips on starting my 641 gas motor when it's cold outside. This is my first winter with it, so I'm still learning.
Once the tractor does finally start it runs like a top. No smoke at idle or under load coming out the tail pipe. When it first fires it pours gray smoke until it warms up.
If I put it in the garage over night (40ish degrees) she turns over in just a few seconds and runs great.

Right now she lives outside (0-15 degrees). It is a major struggle to get it to start. I do not have any kind of heater on it.
I live it 8600ft so compression generally is poor - like 95psi. That said - when the weather is warm this tractor starts in 2-3 seconds every time.
I'm running autolite 437 plugs in it. Pulled one today and it was pretty black. Maybe it's time for new plugs?

Any suggestions????
 
I should clarify. When the tractor is cold and having trouble starting, the plugs are black and wet.

Once its running and up to temp then the plugs are nice and clean and tan.
 
I would replace the plugs with a set of NGK3112 plugs and I bet your starting problem will not be any where like they are now. I have switched all my tractor form the auto lite w plugs to NGK and had very good luck using them
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top