Automobiles by GM's Pontiac brand.

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Why does the engine crank but not start in my Pontiac Sunfire 2004?

I have a Pontiac Sunfire 2004 2.2 engine. The motor cranks over but will not start had a new gas pump put in the tank new fuse under the hood put in for the fule pump,inline filter put in, ran good for a good 3 days , now it turn over but wont start.

thank u Gary

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Do you have a spark?


yes have good spark in all plugs


broken fuel pump??


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Could be injector pressure regulator, injectors, controller board. Trouble codes from the engine may point to the trouble . Pull the oil dipstick and look for moisture (sign of a blown head-gasket).

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Gary buchinger will be eternally grateful.
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