jts misfire still - Alfa Romeo Forum
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jts misfire still

Replaced plugs,coil packs,pressure tested engine,still misfiring on no3 cylinder.Battery good,cat and sensor are good.Next on list is an injector.What is the other common faults with the 156 jts misfire and MCSF warning.
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156 1.9 mjet 16v

swap injector to anoyher cylinder if your able to and see if misfire moves
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I had all the tappets changed on mine. Under warranty mind.
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Originally Posted by davealfa11 View Post
swap injector to anoyher cylinder if your able to and see if misfire moves
Not easy on a JTS,

Check the wiring, look for damage from the plugs of both the coil and injector (very hard to get to unless you remove the inlet manifold) connections, check the large connector at the rear of the engine bay mounted to the bulkhead...
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jts , misfire

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