Question about 1999 GMC Sonoma

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Truck wont start after it sits over night

My truck wont start after it sits over night unless i hold down and sometimes pump the gas.

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  • 196 Answers

Sounds like the fuel pressure regulator is leaking try and locate the fuel rail and find the regulator remove the vacuum hose and have some one turn the key on it leaks gas its bad. Note on some of the 4.3L engines the regulator in under the intake

Posted on Jan 11, 2009

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Posted on Jan 02, 2017

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Possible fuel pump. Check the fuel pump pressure;or remove the air intake hose from the throttle body.spray some gas with a squirt bottle in thratle body. replace the intake hose and crank it; if it turns on, your pump is bad.

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Have you tried cycling the key a few(3-5) times, before cranking(and trying to start it?
What i mean is turn your key on, then off, and on, then off(3-5 times), and then turn the key back on, and try to crank/start the vehicle, See what that does!

If that works then you have a fuel leak somewhere.

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Seems like the choke is not turning on. The 22r uses a carb if I'm not mistaken. pump it a couple of times then try pressing the pedal completely down before trying to start it. Then press the pedal half way down. the point is to set the choke when you press the pedal all the way down.

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97 dodge caravan le 3.8 v6 has a fuel problem,i can put gas directly in carb and it will start sometimes run for a day after sitting all night wont start again


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They haven't been around for 25 years

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EVERYTIME 2004 TAHOE GETS LOW ON FUEL (NOT EMPTY, BUT AROUND 30 MILES LEFT...BEFORE ANY INDICATOR LIGHT COMES ON) IT WONT START AGAIN. IT WILL SIT OVER NIGHT AND WE WONT BE ABLE TO START IT....


Sounds like you have either a bad fuel pump or a leak in the line somewhere. With a leak in the line it will take a long time for the gas to get up toward the engine. When it sits over night the gas line empties back into the tank and the process starts all over again

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My 98' audi a4 wont start it cranks and after i give it a little gas it finally starts but sometimes it won't. the check engine light is on and the code said something about the air injection flow?


check for vacuum leaks around your manifold. or at the secondary air pump. worst case you could have a failed combination valve it sits on the back of your block hidden down low. try to apply vacuum to it. if it does not hold vacuum at all that will cause that issue.

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