89 gmc help plz - Page 3

snider777 · 10-16-2009, 03:10 PM

well i turn the truck over and no gas leaks out the fuel filter.. i got the filter undone and nothing comes out.. i figured it was bad.. and i cant hear the pump ethier

crabtruck · 10-17-2009, 12:03 AM

Quote:

Originally Posted by snider777

i turn the truck over and no gas leaks out the fuel filter.. ... i cant hear the pump ethier

Quote:

Originally Posted by snider777

also my gas gauge shows full all the time?? anything i can do while the bed is off

So there's this deal they call a ground on some of the modern trucks.

Welcome to the forum snider, late tho I say it.

This is a great example of why all the info you can kick in
at the beginning of the (single) thread is important.
Find the sender wire at tank or the ground wire and jump it to ground.
If gauge reads right, then stop slandering your pump until
you are sure it's really connected. Shared ground.

snider777 · 10-18-2009, 01:55 PM

i replaced my fuel pump in my 1989 gmc 5.7 v8 ext cab. i can hear the pump now.. and i dont think its getting gas still. i did not replace fuel filter. shoul di replaced filter to and see if thats the problem? is ther a way i can test to see if the filter is bad

cajun cruiser · 10-18-2009, 03:06 PM

undo the outgoing side of the filter and turn the key see if fuel is going through like it should.

bradrhale · 10-18-2009, 05:22 PM

if you can afford a pump, you can certainly but a filter. if you dont know the last time you replaced the filter, then do it now. dont even bother in testing it.
why do you "think" that it is not getting gas??

Crmzendrgone · 10-18-2009, 11:07 PM

Did you replace the pump originally cause you were not getting fuel or you knew it was bad?

gmctrucks · 10-19-2009, 12:07 AM

Quote:

Originally Posted by Crmzendrgone

Did you replace the pump originally cause you were not getting fuel or you knew it was bad?

Good question what was it doing before. And it can be a new pump but the only way to see if it pushing enough gas is to check it with a gauge bad ones will do that like I have written before if it is bad pump get a Delphi pump. And you don't have to replace the filter but like Brad wrote if you can't remember when it was done last buy a new one now read on the new filter it will say in which direction to put it on.
Good luck! GMC

10-16-2009, 03:10 PM	#21
snider777 Full Member Join Date: Oct 2009 Posts: 26	well well i turn the truck over and no gas leaks out the fuel filter.. i got the filter undone and nothing comes out.. i figured it was bad.. and i cant hear the pump ethier

10-18-2009, 01:55 PM	#23
snider777 Full Member Join Date: Oct 2009 Posts: 26	fuel pump i replaced my fuel pump in my 1989 gmc 5.7 v8 ext cab. i can hear the pump now.. and i dont think its getting gas still. i did not replace fuel filter. shoul di replaced filter to and see if thats the problem? is ther a way i can test to see if the filter is bad

10-18-2009, 11:07 PM	#26
Crmzendrgone Senior Member Join Date: Apr 2009 Location: Arizona Posts: 1,420	Did you replace the pump originally cause you were not getting fuel or you knew it was bad? __________________ ENGINES PRODUCE POWER. MOTORS RECEIVE POWER. https://lastroundbestround.com/Home_Page.html

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10-18-2009, 03:06 PM	#24
cajun cruiser Full Member Join Date: Jan 2009 Location: greenville,tx Posts: 46	undo the outgoing side of the filter and turn the key see if fuel is going through like it should.

10-18-2009, 05:22 PM	#25
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	if you can afford a pump, you can certainly but a filter. if you dont know the last time you replaced the filter, then do it now. dont even bother in testing it. why do you "think" that it is not getting gas??