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stepdads truck having trouble starting, please help

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Old 12-26-2010, 09:40 PM
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Default stepdads truck having trouble starting, please help
well my stepdad has a 2001 gmc V6 with around 140k miles. he changed the fuel pump about 4 months ago and hes still having a problem starting it. He says when its freezing cold outside the truck will start up like normal without a problem, but when its warm outside he said it takes about 5-7 seconds to start up. anybody have an idea of what it might be? he says he put a new alternator on it about a month ago as well and says the battery is good.
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Old 12-26-2010, 09:41 PM
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I would clean the MAF, seafoam the engine.. Thats a start..
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Old 12-26-2010, 09:43 PM
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How old are the spark plugs & distributor cap/rotor? They seem to get overlooked on the 4.3
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Old 12-26-2010, 09:46 PM
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he said spark plugs were changed about 2 years ago, dont think he's ever changed the distribuor cap/rotor
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Old 12-26-2010, 09:53 PM
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There ya go!
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Old 12-26-2010, 09:58 PM
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Check the fuel pressure again. Possible leaking regulator.
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Old 12-27-2010, 07:20 PM
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where is the regulator and what is it?
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