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Registered User
Join Date: Apr 2001
Location: Richmond, VA, USA
Posts: 160
Post Backfiring on open throttle

Over the past few weeks, my car backfires every now and then when I open up the throttle wide. This happens maybe once a week, and only with the pedal to the floor.

I did a search of this BBS and found threads dealing with carbs (mine's FI) and threads dealing with backfiring on decel. I couldn't find anything about open throttle backfiring.

So I ask you, what might cause this?

Thanks in advance,
76 911S Targa
Continental Orange
Old 03-29-2002, 06:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
Join Date: Dec 1969
Location: Dade County, FL.
Posts: 1,145
Send a message via AIM to JP Noonan
two things to look for are a leaking cold start valve if the backfire is through the intake. and exhaust leaks if it is out the tailpipe. Also maybe the MPS could be doing it?
93 Lightning
76 912e
Old 03-29-2002, 06:40 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)

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