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Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
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  Jim Grant's Tech Tips

'92 Chevy Corsica, Injector Replacement

Q: I have a ‘92 Chevy Corsica with a 2.2-liter engine and it was running fine before I replaced the #1 fuel injector. Now it won’t start. It turns over then a big clunk and then nothing. Please help! Did I miss a step in replacing the injector?

- Fernando

A: There are a couple of possible causes, which come to mind, there’s one concern that has my attention. To change the fuel injector requires removing the upper section of the intake manifold assembly to allow for removal of the fuel injector retaining bracket and then the fuel injector. While you were changing the fuel injector, is it possible that something fell into the lower section of the intake manifold? The fact that the engine only turns over part way before it stops with a thump makes me wonder. If this is the case “don’t keep trying” to turn the engine over. Pull the spark plugs and see if you can look into each cylinder for a foreign object. Rotate the engine by hand only to position the pistons so you can see the top of them. It will be difficult to see the entire piston top but it is worth looking. As you turn the engine over by hand feel for how the crankshaft stops turning it will be a good clue to what’s happening. My gut feeling? Something fell into the intake and is now inside the engine. If you force the engine to turn over you can damage the cylinder head, valves and or pistons. You may be practicing how to remove a cylinder head to find the solution to this problem.

 
     
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