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You could have a problem with a vacuum line.

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13y ago
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Q: Why won't an engine fire when it has spark and fuel?
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Why wont my 2001 ford f250 fire the engine will turn over but not start?

Does it have spark, fuel, compression?


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If the engine is not giving spark or sending any fuel to the cylinders. Then I would seriously suggest checking out the CKP or crank position sensor located on the front of the engine.


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The engine might not be getting any fuel. The engine may also have weak or no fire at the spark plugs. Check these two places to find the problem.


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Check the timing for the 90 Corsica. the most likely cause for the engine not starting is it has jumped time causing the engine to fire at the wrong time.


The engine turns over when you try to start your 1987 tercel but wont start it wont accept a jump start either What should you try next?

Okay, crank it. No start...are you getting fuel? If so, check for spark. If you are getting spark and fuel, check to see if your timing is correct. After that, I'm really not sure...if you are getting gas and spark, then the thing should fire up.


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you need three things for an engine to run. proper air/fuel mixture, compression and spark at the proper time.


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The engine needs fuel, compression and spark to run. You are missing one of those.


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