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back fireing beauty
  I need some help ! I have changed the spark plugs on my 1978 911T SC with a 19873.2L twice recently! After i changed them the first time it consistently backfired. Assuming the gap was wrong. I bought new plugs . I carefully installed the new set but it is still backfiring really really bad! Help this beast with her beauty! Thanks ,  Joy
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04-30-2010, 04:13 PM
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Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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I would be confirming two things:
1) Correct firing order 2) Ensure that the plug connectors are properly seated on the plugs. Unless the plug gaps are wildly off, that will not cause backfiring.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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04-30-2010, 04:21 PM
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Thanks Steve ! I'm off to the garage!I'll keep you posted on my progress! |
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05-02-2010, 10:26 PM
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yeah!!!! beauty is purring !!! thank you steve
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05-05-2010, 01:50 PM
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| backfiring , sparkplug |
