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2000 gmc p.u. won,t start Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting roscoebrowndog Novice Nov 14, 2010, 4:56 PM Post #1 of 5 (2048 views) 2000 gmc p.u. won,t start Sign In i have 2000 gmc sierra there are only 78,000 km. on a 4.3 lt.v6 since day one whenever it was raining it would start to miss fire i could never see a pattern to it and it always stopped when the road dried out. last monday morning i parked at work[ i drive a truck] went on a short trip came back tuesday night the p.u cranked over normaly but never sounded like starting i spent all next day checking plugs and sensors found one plug with a bit of corrision cleaned it then somebody said bang the fuel tank it started i drove home. the next day it would not start i can hear fuel pump when i turn the key i checked the relay for fuel pump and all fuses appear to be o.k. what next? (This post was edited by roscoebrowndog on Nov 14, 2010, 5:35 PM) Hammer Time Ultimate Carjunky / Moderator Nov 14, 2010, 7:47 PM Post #2 of 5 (2037 views) Re: 2000 gmc p.u. won,t start Sign In Use a fuel pressure gauge on it. this is a high pressure system that requires a minimum of 55PSI to run. Nothing less is acceptable. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Sidom Veteran / Moderator Nov 14, 2010, 7:52 PM Post #3 of 5 (2033 views) Re: 2000 gmc p.u. won,t start Sign In You need to put a gauge on it and check pressure as HT suggested but if banging on the tank got it to start.......Odds are pretty high you have a bad fuel pump roscoebrowndog Novice Nov 14, 2010, 10:21 PM Post #4 of 5 (2028 views) Re: 2000 gmc p.u. won,t start Sign In thank you for the replies i had about decided it must be fuel pump but it is not a small job and i needed to hear some else confirm i was on the right track In Reply To Hammer Time Ultimate Carjunky / Moderator Nov 15, 2010, 3:44 AM Post #5 of 5 (2023 views) Re: 2000 gmc p.u. won,t start Sign In Nobody here said you have a bad fuel pump and you shouldn't be changing it automatically. We said to check the fuel pressure, not change parts. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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