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1996 Ski Nautique - Never a problem and well maintained. Started backfiring.......

Pamela

New member
Never any problems with this engine. I've had it for years and nothing has gone wrong. Replaced plugs, wires, cap and rotor last year and has been fine. Tried new MAP sensor, throttle sensor.... No idea what the problem is. My mechanic is stumped. Runs rough under power. Oil is changed regularly. No water in gas.
 
which engine is it??? could be fuel delivery or ignition malfunction.....what is the fuel pressure and make sure it is checked under load...anybody check the ecu for a code?
 
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