help!

snider777 · 10-24-2009, 02:03 PM

ok heres the deal i hope i can get it running today. 1989 gmc 5.7 litter fuel injected. was not getting gas. i replaced fuel pump and filter and thoses work properly.i tested it. the gas gets all the way to the carberator and gets stuck somewhere in there and dont allow it to start. i unpluged the lines going to the carb and gas came out of there. wha ti wanna know is what can i replace to get it starting. can there be a claug? can i test the 2 wires going into the carb to make the swing are go up and down? is there even a swing arm? please help. should i buy a carberatorr.... or should i test the wires going to there im confused help please?????

thanks!

BernieB · 10-24-2009, 02:55 PM

First off, if it's fuel injected then you don't have a carb. Most likely it's TBI, and there's a number of issues that could prevent the injectors from firing. I believe the most common of these would be a bad crank sensor.

Have you tried pulling codes yet?

snider777 · 10-24-2009, 02:58 PM

if i just buy a new one that would work?

and where is the crank sensor

pulling codes?

BernieB · 10-24-2009, 03:09 PM

Is your check engine light on?

leolkfrm · 10-24-2009, 03:17 PM

dump some gas down the throttle body and see if it spits

snider777 · 10-24-2009, 03:17 PM

no... gas gauge dont work as well.. hasnt since i bought it

i dumped gas down there and it wants to start... it starts for a sec then dies like it needs gas

i noticed another guy on here had same problem... and did ignition module and it worked?

BernieB · 10-24-2009, 03:56 PM

Check the bulb in the CEL, might be burned out, then try pulling codes once you get it working.

snider777 · 10-24-2009, 03:58 PM

sorry.... cel?? how do i pull c0des and will me buying a new tbi fix problem most likley

?

snider777 · 10-24-2009, 03:59 PM

o for the check engine light?

gmctrucks · 10-24-2009, 04:21 PM

Brad has a good chart on checking them look at some of his post somebody just put it on a post the other day.

10-24-2009, 02:03 PM	#1
snider777 Full Member Join Date: Oct 2009 Posts: 26	help! ok heres the deal i hope i can get it running today. 1989 gmc 5.7 litter fuel injected. was not getting gas. i replaced fuel pump and filter and thoses work properly.i tested it. the gas gets all the way to the carberator and gets stuck somewhere in there and dont allow it to start. i unpluged the lines going to the carb and gas came out of there. wha ti wanna know is what can i replace to get it starting. can there be a claug? can i test the 2 wires going into the carb to make the swing are go up and down? is there even a swing arm? please help. should i buy a carberatorr.... or should i test the wires going to there im confused help please????? thanks!

10-24-2009, 02:55 PM	#2
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,902	First off, if it's fuel injected then you don't have a carb. Most likely it's TBI, and there's a number of issues that could prevent the injectors from firing. I believe the most common of these would be a bad crank sensor. Have you tried pulling codes yet? __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

10-24-2009, 02:58 PM	#3
snider777 Full Member Join Date: Oct 2009 Posts: 26	if i just buy a new one that would work? and where is the crank sensor pulling codes? Last edited by mudseeker; 10-24-2009 at 03:46 PM.

10-24-2009, 03:09 PM	#4
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,902	Is your check engine light on? __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

10-24-2009, 03:17 PM	#5
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	dump some gas down the throttle body and see if it spits __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

10-24-2009, 03:56 PM	#7
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,902	Check the bulb in the CEL, might be burned out, then try pulling codes once you get it working. __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

10-24-2009, 03:58 PM	#8
snider777 Full Member Join Date: Oct 2009 Posts: 26	sorry.... cel?? how do i pull c0des and will me buying a new tbi fix problem most likley ?

10-24-2009, 03:59 PM	#9
snider777 Full Member Join Date: Oct 2009 Posts: 26	o for the check engine light?

10-24-2009, 04:21 PM	#10
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,033	Brad has a good chart on checking them look at some of his post somebody just put it on a post the other day.

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