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Re: 78 320i - Driving fine & then....backfire, (archive)
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Posted by JIm Baron on March 16, 2000 at 06:15:16:

In Reply to: 78 320i - Driving fine & then....backfire, sputter posted by Les Jones on March 15, 2000 at 22:32:33:

: Was driving home tonight doing just fine. Cruising @ 50mph or so. Started to b/fire, sputter and jerk. Then straightened up for a mile or so. Started losing power, backfiring...had to pull off. Checked points and cap. Replaced points with old set. Thought maybe the points had crapped out. No dice. Car started and i took off again, but the same symptoms happened and got worse. Had to call tow truck to get home.
: Possible problems here. Fuel pump? Timing Chain? Any hints or tips from veterans would be appreciated.
: Thanks, Les @ Croaking Frog

The next thing to change would be the condensor -- backfiring is often an indication that it isn't doing its job -- but lack of fuel pressure comes after that, and can have a lot of specific causes -- filter, pump, etc.

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