Author Topic: 87 tbi fuel pump  (Read 3991 times)

Offline rudedog67

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87 tbi fuel pump
« 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


Offline TexasRed

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Re: 87 tbi fuel pump
« Reply #1 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?

Offline rudedog67

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Re: 87 tbi fuel pump
« Reply #2 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

Offline VileZambonie

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Re: 87 tbi fuel pump
« Reply #3 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?
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline rudedog67

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Re: 87 tbi fuel pump
« Reply #4 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

Offline VileZambonie

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Re: 87 tbi fuel pump
« Reply #5 on: October 06, 2008, 08:41:13 am »
Is there gas in the tank?
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline ccz145a

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Re: 87 tbi fuel pump
« Reply #6 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
1975 C10 Silverado LWB, 454CID, TH400, 10bolt 3.42
11MPG Downhill w/tailwind (but there ain't no hills here)

Offline rudedog67

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Re: 87 tbi fuel pump
« Reply #7 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