Question about 1990 Chevrolet Corsica
LT 4 cylinder 2.2 liter
Intake manifold gasket may be bad,if the coils were bad you would get no spark and no fire i doubt its your plugs
Posted on Jan 15, 2013
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Posted on Jan 02, 2017
Do you know whether or not you have an aluminum block? Also, is that # 6 a firing order for your spark plugs/boots? If you have an aluminum block, the block has to be 100 % cool. Don't even start it before changing a spark plug. It is very easy to misthread when replacing causing shavings to get inside and then you basically have the problem all over again. You also need to put dileletic grease as well as anti-seize on the plug or boot. Any time you change plugs/boots on an aluminum block, be sure that you keep the hole covered as not to get any foriegn object inside. Also, make sure that the gap is correct even though it is supposed to be when you purchase it. It is usually a good idea to change all your plugs at the same time instead of just one if you are trying to trouble shoot, to save $$ like the rest of us. Good Luck, I hope this helps. Let me know, OK?
Posted on Jan 12, 2009
Remove spark pug wires from spark plugs. On this engine, it is located on the top. Remove all plugs with socket and ratchet. The socket size is a 13/16th. The new plugs should be pregapped if the correct ones where given to you. But check the factory spec for the gap. There is a sticker in the engine compartment that should tell you the gap. Gap the plugs as required and install them. DO NOT OVERTIGHTEN PLUGS, Double check factory tightening specs for plugs. Use a torque wrench to tighten plugs to required torque. If this this information is not available to you, then snug will be fine.
Posted on Jul 23, 2009
sound like bad ignition module.make sure where coil pack set in module contacts is clean and making good contact.also make sure plugs and wires is good.
Posted on Jan 09, 2010
SOURCE: i have a 2001 chevy
misfires can be caused by faulty ignition components, but they can also stem from other components. Such as faulty injectors, or improperly timed or unseated valves. Sounds like you have touched on all of your ignition suspects.
Are there any codes present other than P0304, P0305 and P0306? If so they should help guide you in the right direction. If not, You might want to make sure your valves are seating and if so, go ahead and swap an injector from a misfiring hole with a good one from a hole with no misfire. (like switch #2 and #4 injectors for example) if the misfire moves to cyl 2, you know the injector is at fault.
Posted on Oct 02, 2010
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