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TBI truck hard starting

Ponyhntr

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Ponyhntr Enthusiast

Ponyhntr

Posted
Posted

My 95 Tahoe starts hard when cold. It just cranks for quite a while before it fires. If I turn the key to 'on' then back off after a couple seconds, then try to start it, the truck fires right up. It doesn't do it after it has ran for a few seconds (like if I shut the engine off, then start it back up right away).

 

It seems like it is a fuel problem, like maybe the regulator is bad or something? Anyone had this problem?

 

Any and all help would be greatly appreciated!

Mike G Enthusiast

Mike G

Posted
Posted

First off, welcome aboard!

 

I would suggest replacing the fuel filter for starters. Then, it sounds like your system is bleeding down, check for a small leak at the back of the TBI unit. Other than that, could be the pump going bad, but that usually just happens, then you're stuck some where :flag:

 

--Mike

facn8me Senior Enthusiast

facn8me

Posted
Posted
First off, welcome aboard!

 

I would suggest replacing the fuel filter for starters.  Then, it sounds like your system is bleeding down, check for a small leak at the back of the TBI unit.  Other than that, could be the pump going bad, but that usually just happens, then you're stuck some where :cheers:

 

--Mike

 

 

 

:flag:

 

 

pull the vacuum line off the regulator and look for gas. possible check valve in the pump

Ponyhntr Enthusiast

Ponyhntr

Posted
  • Author
Posted
First off, welcome aboard!

 

I would suggest replacing the fuel filter for starters.  Then, it sounds like your system is bleeding down, check for a small leak at the back of the TBI unit.  Other than that, could be the pump going bad, but that usually just happens, then you're stuck some where :flag:

 

--Mike

 

 

 

 

Thanks for the welcome! I've been around cars and trucks for quite a while now, and am no stranger to message boards, but I just found this site not too long ago. Not a bad one, I might add! :cheers:

 

Anyway, I kinda figured it was bleeding down, the way that it acts. I just didn't know if there was a common problem on those trucks, that a lot of people have had problems with. I will check the regulator, and go from there. Thanks! :cheers:

97chevy350 Enthusiast

97chevy350

Posted
Posted

Im thiking fuel pump, I had the exact same problem a few months ago and the pump did the trick. If it cranks longer and longer as time goes on, Ill bet its your pump. Towards the end there i was just about running my battery dead tryin to get the dang thing started. If you dont have one, see if you can get someone to put a fuel pressure gauge on it. And antoher thing, after it has been sitting, turn just the key on and listen to the pump, you should get a a solid buzzing for about 2 secs. If you hear like a spitting sound, you pump is DOA.

Ponyhntr Enthusiast

Ponyhntr

Posted
  • Author
Posted
Im thiking fuel pump, I had the exact same problem a few months ago and the pump did the trick.  If it cranks longer and longer as time goes on, Ill bet its your pump.  Towards the end there i was just about running my battery dead tryin to get the dang thing started.  If you dont have one, see if you can get someone to put a fuel pressure gauge on it.  And antoher thing, after it has been sitting, turn just the key on and listen to the pump, you should get a a solid buzzing for about 2 secs.  If you hear like a spitting sound, you pump is DOA.

 

 

 

 

I would assume it was the pump too, if it had just started doing it. BUT, it's actually been doing it for several years now. With it being my second vehicle (I usually drive my Camaro all the time), it's always been, if it ain't broke, don't fix it! :cheers:

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