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Re: silverado won't start....sometimes
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Originally Posted by Gary the Engineer
My 99 was doing the same thing, however it did start, albeit hard. Then ran just fine after it started.
Check the fuel pressure regulator located on the fuel rack. Pull the vacuum line off of the regulator and sniff it for the smell of gasoline. If you smell gas in the vacuum line, your regulator is bad. Replace it. Took me 10-15 minutes to remove the old one and replace it with new.
Good luck!
Gary
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I am afraid a 99 with external regulator is a little bit diferent than the 91.
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Remember proper testing gives us the answer to many problems.
MT
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