JD 112 misses under load

Posted by THaden on July 11, 2005 at 04:27:02 from (205.188.117.66):

1967 JD 112 with the HH100 tecumseh misses when placed under load, like mowing grass. It runs great in the shop, but put it to work and it back fires and acts like it is running with the choke on. take the load off, and it will clear up. It has about 70 - 75 psi compression, new head gasket (old one leaked and I noticed the the piston & valves were carboned up some), the spark is an orangeish color, and when it misses I cant tell a difference in the spark color. I rebuilt the whole machine 18 years ago and ran great, but it sat for the last 10 years. I was 12 and this was my first major project by my self. It is something stupid iam sure I just hve not had the time to really get into it. Any thoughts?

Follow Ups:

• Re: JD 112 misses under load Coloken 05:18:28 07/11/05 (0)

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