What make my car backfire while trying to start it up?
Asked by Mon20Davis Jul 14, 2015 at 01:11 AM about the 1972 Oldsmobile Cutlass Supreme
Question type: Maintenance & Repair
After the car starts it run great and idle good. But does not have the power that it should have with a 350 rocket engine.
6 Answers
Sounds like it may be out of timing,weak power and backfire is sign of advance timing,meaning flooding it self,bogging out,check the timing.
Check ur wire mite be cross
Mon20Davis answered 8 years ago
Thanks this helps a lot will this allow the 4 barrel to open up as well?
Or one of ur wire mite have a split n it. Or ssitting on the manifold..
If the problem started all of a sudden its quite likely that your timing chain is loose and has skipped a tooth. The only fix for that is a new chain and gears in the front of the engine. Takes the better part of a day if you're a do it yourselfer. You'll need to rent a harmonic balancer puller, but otherwise hand tools will do the job.
