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99 hard to start

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08-29-2009, 05:58 PM	#1
scatesracing Machinist Join Date: Sep 2007 Location: Derby Kansas Posts: 296	99 hard to start My 99 gmc is hard to start when it is warm... starts fine cold .. in the morning after work. If it sets fer 5 0r 10 min after running for a while it is very hard to start i have to give it some gas and let off the key and it will stumble to life. it wont start till i let go of the key. it wil crank and crank... any ideas ... been doing it for a couple of years not a big deal but i should fix it..

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