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If an engine has compression, ignition and fuel, it will run. Find out which isn't there and you've solved the mystery. If you're certain about the timing being right and a good, hot spark, check for fuel pressure. The fuel pump might not be working. Usually compression gives you other symptoms, but if the timing belt/chain has slipped you might have poor compression. If you have no fuel pressure, it could be the pump, a sensor, the filter or a relay or fuse. Of course there are also many other possibilitie, so just enhance your sleuthing skills and good luck.

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โˆ™ 2006-03-24 15:48:35
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Q: If the timing is right on a Pontiac Sunbird 2.0 ohc and you have a spark but it will not start what could be wrong?
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