Excessive engine heat

37chief · May 8, 2014

I have a old chipper run by a ford industrial V8 engine. At times it starts running rough, and the exhaust pipe, and muffler turn red from the heat. Then sometimes it runs fine. Any thoughts? Stan

Determined · May 8, 2014

Lean on fuel
Timming

DaninKansas · May 8, 2014

Agreed with both.

JMS/.MN · May 8, 2014

Chipping debris plugging the shroud, plus what he said.

dr sportster · May 8, 2014

Sign of late timing --advance weights stuck ?

the tractor vet · May 8, 2014

And what Ford V8 ?? a 330 or 331 ?? 360 or 361 or 390 or 391 . Check timing at and idle and at full RPM then find the spec's for that engine . also go up to the next grade of gas. Memory is a little foggy on total advance on that engine for ind. ap as to total timing since it has been many many moons since i worked on them and way tomany cobwebs in the attic . Your base line timing at idle with vac hose plugged should be between TDC and around 5-8 degrees and total some where around 28 to 32 degrees at 2000 RPM with full vac and centrif. advance total . BUT DON'T hold me to this as like i said been years.

JMS/.MN · May 8, 2014

oops- didn"t read close enough...pictured a little chipper with air cooled engine. no shroud.

Rick Kr · May 8, 2014

A 3rd vote for timing and running too lean.

Bob M · May 8, 2014

I agree with the others - it's either lean fuel mixture or late ignition. First thing I'd check is fuel pump and filter, then go after the timing.

Note that even when properly tuned, a healthy gas engine will get the manifolds and muffler glowing dull read under full load/RPM .

37chief · May 8, 2014

The motor is a 331. Stan

Geo-TH,In · May 8, 2014

Stan,
Check all the things listed below. Then pull plugs do a compression check. Ruff running could mean burnt valves or a plug not firing. Either way if raw gas is making it's way to the exhaust manifold, it will burn there and turn everything very hot.
george

MarkB_MI · May 9, 2014

If it's running rough it is missing. The fuel from the missing cylinder is burning in the exhaust. If the spark plugs and other ignition components have been replaced, my guess would be a bad exhaust valve.

Excessive engine heat

37chief

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Determined

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DaninKansas

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JMS/.MN

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dr sportster

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the tractor vet

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JMS/.MN

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Rick Kr

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Bob M

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37chief

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Geo-TH,In

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MarkB_MI

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