Should I pull the head - getting 150 psi compression

Anonymous-0 · Dec 16, 2011

Hi, working on a IHC B 414 tractor with a gas engine, just tested for compression, getting between 145-150 psi between all four cylinders. Tractor was running rough and now not at all, some one told me might have a valve issues, would with this range of compression, what should it be?

Where can I find correct spark plug type and gap for model of tractor?

Bus Driver · Dec 16, 2011

I do not know the specifications for that tractor but 150 sounds good to me. No valve, compression ring or significant camshaft problems there. Ignition? Manifold leak?

Bob in SD · Dec 16, 2011

That seems like plenty of compression. I'd look elsewhere for the problem

old · Dec 16, 2011

Compression like that is more then enough to make it run. Why spend all that $$ before you have checked things like does it have a good spark that will jump a 1/4 inch gap. No spark no run and those carbs are not very good and are known to be a problem and or the fuel pump. Make sure you have spark and gas before moving to other things that cost big $$. Basic trouble shooting first then go to other things like checking the valve which can be done with out pulling the head by way of the valve cover

El Toro · Dec 16, 2011

Check out the easy things like ignition and fuel. Compression sounds good. If it has the gas engine check your fire to your plugs. Hal

buickanddeere · Dec 16, 2011

Check for a leaking intake manifold, weak valve springs, carb or ignition problems.
As a long shot. Install a degree wheel on the crank and use a dial indicator to verify cam lift/duration.

Texasmark1 · Dec 17, 2011

On your compression: Good.

Should I pull the head - getting 150 psi compression

Anonymous-0

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Bus Driver

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Bob in SD

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old

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El Toro

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buickanddeere

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Texasmark1

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