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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: rudedog67 on October 04, 2008, 06:58:14 pm

Title: 87 tbi fuel pump
Post by: rudedog67 on October 04, 2008, 06:58:14 pm

Just replaced the right side fuel pump two days ago. Truck was running great. Quit on me this morning. It energizes when key is on but cranks and won't start. is there a seperate fuse for this side? Left side there is no problem, switch is fine, because it energizes.  Carter fuel pump. is there a way to bench test the pump out of the tank?

Thanks in advance

Title: Re: 87 tbi fuel pump
Post by: TexasRed on October 04, 2008, 07:26:29 pm

Are you sure it's not pumping gas? Maybe the fuel filter is clogged or there's a restriction in the line?

Title: Re: 87 tbi fuel pump
Post by: rudedog67 on October 04, 2008, 08:12:26 pm

The truck runs perfect on the left side tank, when you switch to right side gauge works, pump energizes but truck dies. Cranks but won't start. switch back to left and fires right up.  is there a way to test pump off the truck?

Thanks

Title: Re: 87 tbi fuel pump
Post by: VileZambonie on October 05, 2008, 07:25:43 am

How do you know it energizes? Do you hear the pump running? Did you check your fuel pressure? Did you verify voltage and your ground directly at the pump when it's switched?

Title: Re: 87 tbi fuel pump
Post by: rudedog67 on October 05, 2008, 01:13:47 pm

I have everything apart now. Is there a way to test pump while off truck? When it was together, when switched on the leftside, relay clicked pump energized for a couple seconds cranked then started. on rightside, relay clicked pump energized for same but cranks and won't start. I have not checked fuel pressure yet. both pumps hummed when switched, that's how I checked them.

thanks

Title: Re: 87 tbi fuel pump
Post by: VileZambonie on October 06, 2008, 08:41:13 am

Is there gas in the tank?

Title: Re: 87 tbi fuel pump
Post by: ccz145a on October 06, 2008, 09:08:36 am

Quote

Is there gas in the tank?

Sometime it's the simplest questions that get to the root of the problem ;D

Title: Re: 87 tbi fuel pump
Post by: rudedog67 on October 06, 2008, 06:27:17 pm

Not any more, there was sufficient at the time. Thanks to all who've chimed in. The question remains unsolved.


Tha Th Th That'a all folks