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1995 Oldsmobile Achieva back firing

Tiny
GEORGE M BOYER
  • MEMBER
  • 1995 OLDSMOBILE ACHIEVA
  • 110,000 MILES
Achieva 2, 4l engine idles fine back fires only after 3000 rpms more acceleration the faster it back fires replace ingnition module both coils fuel filter to no avail DISCONECTED CONVERTER O changed air filter HELP PLEASE
Monday, August 26th, 2013 AT 10:30 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure with a gauge then check for worn cam lobes/followers/lifters.
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Tuesday, August 27th, 2013 AT 12:25 PM
Tiny
GEORGE M BOYER
  • MEMBER
  • 2 POSTS
Thanks hmac300 I will try the fuel presure test tried everthing else
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Wednesday, August 28th, 2013 AT 7:10 PM

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