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I replaced all three coils and wires and plugs,the car is missnig very bad, so I replaced the crank sencer today and still missing.I check all wires and found out that my bottom coil was not fring, I replaced it and it still isnt fring,still missing,what do I check next.this is for a 1993 cutlass ciera,3.3 motor,fuel injected.
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First you need to determine what type of miss you have. Is it random on all cylinders, or is it restricted to one or two cylinders? Random misfire can be caused by crank or cam sensors that are starting to give out. Single cylinder misfires can be due to plugs, wires, coils (you already addressed those), as well as internal issues such as burnt or broken valves.
is the car missing when driving? 2000 and on has coil over plug's there are no wires. Is the check engine light on? if so go to an Auto Zone parts store or one that will scan the car computer for free and get the codes out to pin point the problem. Sounds like the cars miss firing. it could be more than one coil and or plug going bad. Did you replace any coil packs? Bad coil packs are 90% of all miss fires on todays cars and trucks.
Sounds like you have an injector leaking. Have someone just cycle the key on and off to run the fuel pump but don't crank the engine. If you see fuel dripping from the injectors, unbolt the injector cover on the throttle body, remove the injectors and replace the orings around the injectors.
alot things can cause misfires bad spark plugs bad wires wrong timing bad injectors think that distributor motor if is bad cap or rotor if coil pack motor bad coil pack
i got a1996 dodge intrepid 3.5 L .the spark plugs 1,3,2 works but 4,5,6 do not work. i changed the spark plug wires, the coil ,the crankshaft sencer and the camshaft sencer.what else could cause this not to start?
check your engine position sensors after you verify you have the plug wires in proper firing order. cam and crank position sensors play critical roles in todays electronic ignition vehicles.
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