Engine backfires, Suggestions for 2.0 carb motor |
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Engine backfires, Suggestions for 2.0 carb motor |
RWD |
Feb 22 2004, 06:55 PM
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#1
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Newbie Group: Members Posts: 4 Joined: 22-February 04 From: Staten Island, NewYork Member No.: 1,701 |
Hi all,
Just found this forum. Wish there would have been something like it when I started restoring my 73 2 liter back in 1980. Anyhow still have, and love the car! Here is my question , why is my car backfiring when shutting the engine off?Is there something going on with the carb conversion (dual 40 IDF's) that I did many many years ago. Checked timing, plugs, carb balance etc.. I don't have any gaskets where the manifolds come in contact with the heads, only on the top where the carb meets the manifold. Could this backfires indicate an air leak of some sort, and if so what is the best material or sealant to eliminate it. Any suggestions would be helpful. (IMG:style_emoticons/default/confused24.gif) |
john rogers |
Feb 23 2004, 08:36 AM
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#2
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
When you pull the intake manifolds, check to make sure they are flat where they bolt to the head, both of mine had warped over the years. How old is the carb rebuild? If more than a couple of years then you might consider a rebuild to clean things out. How are the valve clearances? If they tighten up, especially intakes you can get backfiring. Finally, how loose are the throttle shafts? If they have worn too much they can cause a big air leak. Good luck.
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