Posted by Janicholson on March 22, 2016 at 18:43:46 from (63.152.203.11):
In Reply to: IH 300u running bad posted by Dayong on March 22, 2016 at 16:05:13:
I second (or third) the coil as an issue. I will also mention that a loose or cracked intake manifold will pll away when warm and cause a vacuum leak. Use a propane torch with the tip removed so pure propane comes out. With the tractor outside and running poorly, open the valve a little and move it around the manifold to head area. if the engine smooths out, or changes speed, suspect the manifold. Jim
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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