Fiero backfires

Australia Rob

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Hi from Australia,have a backfire problem V6 2.8 runs ,temp ok ,no loss of water ,no code light at all .voltage at ECU Across ecu test terminals car new to me ,has been standing 5-10 years looks never serviced 1987 GT OTherwise great condition ,brakes not that good replaced front calipers and bleed
 
If it's been sitting that long a complete rebuild of anything related to fuel system would be a good place to start, throttle body, pressure regulator, etc.
 
Vacuum leaks or bad cam/ lifter usually are the culprits with backfires.

Check especially around the intake gaskets, 3.1
V6 60* sister engines had a bad reputation of leaking intake gaskets but not 2.8.......worth a check anyways..

Doug in P.R.😎
 
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