Joined: Sep 25, 2011 Posts: 120 Location: Silver Lake Mi.
Posted: Fri May 18, 2012 10:10 am Post subject: Backfiring at top speed
My 53' a1 has developed a spudder and backfire at top speeds. If you hold it to 45mph or better for a distance it begins to load up and backfire. It cleans up if you push in the clutch and rev it up a few times. If you keep it under 40mph it runs fine. It also doesn't do it everytime either, kind of random. You'll be going along thinking it's fine and it will act up, and other times it will run without any problems at speed. It seams to me to be a fuel problem and I recently changed the fuel filter and that made no difference. Think it maybe the float level? Anyone have any ideas or had similar problems. _________________ Dave
53' M38a1, 53' M37, 67' M715, 67' M725, 67' M35a2
http://www.davidallenracing.com/motorpool.htm
Delta Team Decals http://www.deltateamdecals.com/
Joined: Sep 25, 2011 Posts: 120 Location: Silver Lake Mi.
Posted: Tue May 22, 2012 1:21 pm Post subject:
I had checked most of the basics. I pulled the plugs the other day and they were black and very sooty (running rich) After putting in new plugs it ran slightly better, mainly due to having clean plugs. So I'll dig into the vacuum diaphragms in the carb and after reading some stuff in the downloads section, also check the meetering rod. Hopefully I can get this thing running cleanly for it's first memorial parade here with the rest of the fleet. _________________ Dave
53' M38a1, 53' M37, 67' M715, 67' M725, 67' M35a2
http://www.davidallenracing.com/motorpool.htm
Delta Team Decals http://www.deltateamdecals.com/
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