Trouble shoot

naquin · Mar 8, 2016

My ford power master will not fully shutdown when the engine is good and warm it keeps spinning over can anyone say what it May be

rustred · Mar 8, 2016

presuming its a gas, and all settings like timing are set to spec. all you need to do is slow the idle speed down. to like 400 rpm. you want the throttle plate pretty well closed so it dont keep running when shut off.

Russ from MN · Mar 8, 2016

When our Farmall C does that I leave it idle until it cools down, that is probably the best for the engine. The owners manual for
our newer tractor says if you ever kill the engine when working it hard to restart it immediately.

Dune Country · Mar 8, 2016

Sounds to me that you might have carbon build up in the cylinders.
When hot the carbon keeps burning the gas. Let it cool down first.

There are products to clean out the carbon, seafoam is one.

Back in the day my dad would dump ATF down the carb to clean out the cylinders while reving the motor, made a LOT of smoke and DO NOT let the engine die BTDT

Robert Major · Mar 8, 2016

Hi Russ
Would your newer tractor happen to have a turbo on, as if you stall that when working hard the turbo spins for a good long while with no engine oil flow/ pressure for lubricating it's bearings. Its the same with turbo's when guys drive in the shed at full throttle and just pull the stop knob, or start it and rev it flat out. that thing just won't like it to many times and one day it will go bad.

Properly run turbo's that are idled before stopping/revving flat out will last a lot of hours. if it's abused it will fail in a lot fewer hours. I have seen a couple tractors constantly blow turbo's in a couple 0000 hours everything checks out apart from the clown behind the steering wheel treating it bad. operator error and low oil flow/ Pressure in that order I find are the most common reasons for failures.
Regards Robert

Steve@Advance · Mar 8, 2016

Could be several things.

Take a look at the plugs. If they are burning crusty white, they may be the wrong heat range, too hot. If they look normal, brown, they're OK.

Really advanced timing can do the same thing, but it would be kicking back when stating and clattering under load. This can also lead to overheating and melted pistons.

Over heating can cause run on. Any reason to believe it's running hot?

Carbon build up is a contributor, especially if it's using oil.

But the most common cause is idling too fast or shutting it down while still idled up. Vacuum leaks are a cause.

If everything checks out, and it still wants to run on, just kill it with the clutch.

David G · Mar 8, 2016

Slow down the idle, that is number one cause of run on.

naquin · Mar 8, 2016

(quoted from post at 15:22:32 03/08/16) Slow down the idle, that is number one cause of run on.

k I will do it as soon as I get home thanks everyone!!

Trouble shoot

naquin

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rustred

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Russ from MN

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Dune Country

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Robert Major

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Steve@Advance

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David G

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naquin

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