H backfiring theory

Posted by BTD on July 08, 2001 at 12:02:31 from (198.78.177.52):

After all the work on the magneto, carb, and manifold on my H I finally got her to run. (I had to jb-weld a previously unseen freeze break on the bottom of the carb. She now starts after some hefty cranking and runs a bit rough. After a minute or two of running, she starts to backfire and as the backfiring gets worse, she runs worse until stalling. Now, I think what is happening is that my timing is still 180 out. So my theory goes that only two cylinders are really firing, the other two are just getting gas but missing the spark. After enough gas gets in the two missing cylinders, they start providing the unburnt fuel for the backfires, which disrupt the other two cylinders, and they start messing up until the whole kit and caboodle stalls. She will restart without much cranking. Am I close or way off base? -BTD

Follow Ups:

• Re: H backfiring theory Michael Soldan 14:16:22 07/08/01 (0)
• Re: H backfiring theory The Red 12:07:11 07/08/01 (0)

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