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Nemo914 |
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Member ![]() ![]() Group: Members Posts: 76 Joined: 11-July 03 From: Cape Cod, MA Member No.: 902 ![]() |
Just found this site. Wow. Great info. I have had my 72 914 for 30 yrs. Restored it 10 yrs ago. Still all original--fuel injected. Since then, it has been driven very little (unfortunately). In the last year, I have started getting a popping or backfire on decceleration. It is getting worse and worse. The car drives great and strong other than this annoying habbit. I heard about the exhuast leak possibility and put my had under the car while it was running. I can feel airflow under each heat-exchanger to head connection! Is this normal? I don't understand how ALL could be leaking. I used the copper rings when I connected them 10 yrs ago. Could they be going bad?? I need an expert!!
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Brad Roberts |
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None ![]() |
Boston,
First off let me welcome you to the BBS (IMG:style_emoticons/default/clap56.gif) He could be correct. The 75-6 smog system has a "maze" of tubes that fresh air moves thru and into each exhaust port. If you have a leak in ANY of the tubes or pump... you will have an exhaust leak sound coming from the engine compartment and it will cause backfiring just lilke we are talking about in this thread. He would have to plug all 4 air injection ports to rid you of this leak. Just disconnecting the pump wont do it (unless he blocks off the main line coming into the pump with a hand fabbed block off plate). B |
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