AC D15 problems?

dej(Jed) · Nov 8, 2011

I have an AC D 15 gasoline powered machine. It runs along fine until your work it hard, then it starts running poorly and shuts down. When it shuts down it still has good spark and is getting plenty of gasoline flow at the carb. If you let it sit for a while, a couple of hrs., it will then start normally. Could valve settings cause it to not updraft when it gets hot? Thanks in advance.

RLA · Nov 8, 2011

Standing on the outside looking in....

Recently I fought atractor running poorly when
it seemed to have GREAT Spark ( Would travel
all the way up to my Shoulder) Would miss fart
Pop the warmer it got the worse it ran. But I
could wiggle a carb screw & it would seem better
& smooth out. So I convinced my self the
problem was in the carb. After repeatedly carb
removeal & cleaning without change of
performance by chance I replaced the Brand New
condenser that was already in the distributor
when I bought the Tractor, & It"s ran like a
swiss watch ever since... So what I"m saying
is Don"t over look the condenser....

El Toro · Nov 8, 2011

Set your valve clearance at .012" on the intake and .018" on the exhaust when the engine is cold.
I doubt this is your problem. When it quits running hold your hand over the throat of the carburetor while a helper tries to start the engine. See if it still has good suction. Hal

gene bender · Nov 8, 2011

Amen to the condenser as you just dont know when you have a good one anymore some fail sooner than others.

James Williams · Nov 8, 2011

Is IT running hot

jimmy

dej(Jed) · Nov 8, 2011

(quoted from post at 07:54:36 11/08/11) Is IT running hot

jimmy

No it doesn't run hot at all. It has done this contempitable thing for a couple of years now. I have changed almost everything electrical at least 3 times now. If you hold your hand on the carb throat there is plenty of suction,

Confused In Pa.

James Williams · Nov 8, 2011

I have a Fergerson that has the same problem,The gas tank sits over the manifold and the gas actually boils,It helps if I keep the radiator clean

jimmy

Eldo case · Nov 8, 2011

Junk in carburetor fuel bowl sucking into the load jet shutting off fuel to engine. Setting floats away and will run for a while.

Anonymous-0 · Nov 8, 2011

Also Check the plastic block insulator, that connects the coil to the points. Sometimes they crack, sometimes they are loose, and the point wire, with the U shaped terminal will actually touch ground, stopping the engine. Also, take a flashlight, and look into the gas tank, when it is near empty, to see if there is a floater dead bumble bee, or clover head, getting periodically sucked into the gas pipe.

wolfman · Nov 8, 2011

On an Allis-Chalmers, the first thing to try is: clean out the sediment bowl and the screen.

Jerry Coulter · Nov 8, 2011

Does it have Champion spark plugs in it? If so, change to a different brand.

AC D15 problems?

dej(Jed)

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RLA

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El Toro

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gene bender

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James Williams

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dej(Jed)

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James Williams

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Eldo case

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Anonymous-0

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wolfman

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Jerry Coulter

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