Wifes 93 K1500 wont start - Page 3

Dartanion · 01-18-2008, 12:51 PM

Here is what I have done this morning, I took three bolts off the TBI and removed the little unit that has the injectors in it, look at it really good no sign of anything dirty on it. Now mind that the truck will crank over just no start, if i pour a little gas down the TBI it will start or spray starting fluid down it, it will start. Now getting back to what I have done this am, no i haven't checked fuel pressure with a gauge but if i take the fuel supply line off, at the TBI and have the key on fuel comes out but not a hard stream of fuel. Ok now like I said took the injector housing off this am seemed ok put everything back together and turn key on heard fuel pump run for about 5 secs, tried starting the truck and it started seen fuel spraying out of injectors, then it died and wont restart, engine cranks over good but no start.Am i looking at a fuel pump replacement or something other?

Dartanion · 01-18-2008, 05:47 PM

Since doing the above mentioned, I have been trying to start the truck here and there. After it sits for awhile it will start and run for a few brief seconds then die, and it wont restart, unless it sets for while again. Any one have any ideas about this?

Dartanion · 01-22-2008, 04:43 PM

Ok I jump the fuel pump relay today and I could hear the pump or something making a noise in the tank.Now once again i don't have a pressure tester to check fuel pressure, but when i disconnect the fuel line from the TBI and turn on the key there is fuel coming out of the line, not a strong stream, its almost like when you turn on the garden hose to get a drink of water type stream, So maybe my fuel pump is going out.Would i be correct in thinking this ?

436'd skylark · 01-22-2008, 05:06 PM

holy cow, replace your pump already!

436'd skylark · 01-22-2008, 05:12 PM

Quote:

Originally Posted by ksbs2007

i have been goin through this problem also but you got to have 55 to 60 psi i pressure from the pump. and if it doesn't then it could be the pump but whats causing this pump for low pressure was the fuel pump pulsator. the gas was spraying back in to the tank and losing psi.

not on a old truck. GM ran TBI, a very primitive but effective system that runs right 13-15 PSI.

ryeja · 01-22-2008, 06:53 PM

I agree with joe. Atleast get your fuel pressure checked, but I would suspect the same that the fuel pump or regulater needs replacement. At the very least, a pressure test will give a really good starting point.

01-22-2008, 05:06 PM	#24
436'd skylark Senior Member Join Date: Mar 2007 Location: Buffalo Ny Posts: 620	holy cow, replace your pump already! __________________ Joe 89 K2500 Chevy, Wee-Oh-five 285K miles, completly rebuilt needs a motor, bad 1962 IHC Scout All Wheel Drive (Scout speak for locking axles) 152 ci, dana everything else

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01-18-2008, 12:51 PM	#21
Dartanion Full Member Join Date: Jan 2008 Location: Camargo Illinois Posts: 27	Here is what I have done this morning, I took three bolts off the TBI and removed the little unit that has the injectors in it, look at it really good no sign of anything dirty on it. Now mind that the truck will crank over just no start, if i pour a little gas down the TBI it will start or spray starting fluid down it, it will start. Now getting back to what I have done this am, no i haven't checked fuel pressure with a gauge but if i take the fuel supply line off, at the TBI and have the key on fuel comes out but not a hard stream of fuel. Ok now like I said took the injector housing off this am seemed ok put everything back together and turn key on heard fuel pump run for about 5 secs, tried starting the truck and it started seen fuel spraying out of injectors, then it died and wont restart, engine cranks over good but no start.Am i looking at a fuel pump replacement or something other?

01-18-2008, 05:47 PM	#22
Dartanion Full Member Join Date: Jan 2008 Location: Camargo Illinois Posts: 27	Since doing the above mentioned, I have been trying to start the truck here and there. After it sits for awhile it will start and run for a few brief seconds then die, and it wont restart, unless it sets for while again. Any one have any ideas about this?

01-22-2008, 04:43 PM	#23
Dartanion Full Member Join Date: Jan 2008 Location: Camargo Illinois Posts: 27	Ok I jump the fuel pump relay today and I could hear the pump or something making a noise in the tank.Now once again i don't have a pressure tester to check fuel pressure, but when i disconnect the fuel line from the TBI and turn on the key there is fuel coming out of the line, not a strong stream, its almost like when you turn on the garden hose to get a drink of water type stream, So maybe my fuel pump is going out.Would i be correct in thinking this ?

01-22-2008, 06:53 PM	#26
ryeja Senior Member Join Date: Apr 2007 Posts: 73	I agree with joe. Atleast get your fuel pressure checked, but I would suspect the same that the fuel pump or regulater needs replacement. At the very least, a pressure test will give a really good starting point.