Question about 1997 Chevrolet S-10 Pickup

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Engine barely starts and backfires. Acts like it's out of time,but its a 4 cyl 2.2ltr engine and not sure if I need to set Timing or how to. Just put new head gasket on and fuel is filling up 1 cylinder wall.

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You are probably right about it being out of time since you just changed the head gasket. When you put the camshaft back in you need to make sure the timing marks on the crankshaft and the camshaft are both lined up to TDC (Top Dead Center). Chances are that they are not and you will have to take the top end back apart to set them up right.

Posted on Mar 25, 2011

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The 2.2 is known to "strip" the timing gear. The cam gear is made of a synthetic material. But...you could possibly have an injector bad on #1.

Posted on Mar 25, 2011

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BACK FIRING COMING FROM INTAKE MANIFOLD LEAK, STICK VALVES.BUT THE IGNITION VALVE TIMING COULD BE OFF.DID YOU HAVE ENGINE ON NUMBER ONE FIRING POSITION.AND THE CRANKSHAFT SPROCKET TIMING MARKS LINE UP WITH THE TWO PROJECTIONS ON THE CENTER OF THE TENSIONER AND THE CAMSHAFT SPROCKET TIMING MARKS CORRECT.YOU CANT SET THE IGNITION TIMING ON THE 1996 UP TO 2011 MODEL THE PCM CONTROL TIMING.WHEN YOU REMOVE CYLINDER HEAD REPLACE HEAD GASKET.WHEN PUTTING ENGINE BACK TOGETHER.THE VALVE TIMING HAS TO BE CORRECT IF NOT ENGINE WILL BACK FIRE.

Posted on Mar 25, 2011

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