Please, any help is greatly appreciated. Won't start, will start, backfires.

[rossk87]

we've got fuel, and a weak spark.. when we put all the new gaskets in we didnt touch the rotary valve though.... how would it be possible for that to have been affected? i appreciate all your help.

 

[rossk87]

Im going to have the coil tested tomorrow at a shop and then attack the RV. how do we go about gaining access to that?

 

[Linescreamer]

If it's backfiring the rotary valve needs timing, you could need a new rotary valve gear. This was brought up early in this thread but nobody wanted to listen. When Dr Honda suggests something you should a least listen, he's not usually wrong.

Lou

Agreed. Please explain how the engine goes from "runs great for a few minutes" to the timming is off. Granted the symptoms explained are all over the map, which makes diagnosis difficult.

 

[LouDoo]

I can't tell without seeing but I would suspect the rotary valve gear (it's brass) is stripped.

Lou

 

[Linescreamer]

Ok. Thanks. So it's skipping all over the place and the engine goes in and out of time. Makes sence now that he is backfiring again. Thanks for the education.