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mychevy
New User
Jul 24, 2009, 1:00 PM
Post #1 of 3
(1268 views)
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93 chevy s10 4/4 6cly. tbi z engine truck was runnig fine untill one morning it started hard and would not idle unless i kept pumping gas pedal (3 or 4 min.}once temp needle began to move the engine suddenly started running normal.it will start and run fine after that ,untill it sits overnight,then the same thing happens. please help!!
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 24, 2009, 1:30 PM
Post #2 of 3
(1259 views)
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Re: engine mystery
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The symptoms sound like a fuel pump failing but you'll have to wait until it happens again to be able to verify that with a fuel pressure gauge. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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.
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Sidom
Veteran
/ Moderator
Jul 24, 2009, 1:38 PM
Post #3 of 3
(1255 views)
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Re: engine mystery
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Could possibly be a fuel problem as HT suggested, although with TBI systems a fuel prob wouldn't seem to last so long....Those'll run on almost nothing.... A cold soak data stream would be nice to see. Check your air & coolant temps, see how long it's taking to go into closed loop, etc. Is the check engine light on? ever?
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