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> power to fuel pump, intermitent
jimkelly
post Jul 5 2009, 09:34 AM
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yesterday i wasn't sure if my fuel pump was getting power - or if my injestors were getting fuel - so i removed my injectors and my spark plugs - put my injectors into yogurt cups and turn the engine but no fuel.

i pulled my stock front mounted fuel pump and it did not make any noises when i turned the key. so i hooked up a volt meter to the fuel pump power wire - i was getting power - so i assumed my pump was bad.

this morning i go out to the car and turn the key and the pump runs - so i turn over the engine some to see how fuel is going thru my injectors into the cups - they all spurt fuel - so i put the injectors back in and the plgs back in - and then - bam - the fuel pump is not getting power again??

i swapped out several reays - no success?

http://www.youtube.com/watch?v=PrLcva9o8LA
http://www.youtube.com/watch?v=8pipbKl_ZQU
http://www.youtube.com/watch?v=bOAhJ9OZpm4
http://www.youtube.com/watch?v=9gMp0eoXvYc


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underthetire
post Jul 8 2009, 10:20 AM
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The above pump won't work. Low pressure pump for carbs.

I have had multiple problems just like yours. First one, cracked fuse on the relay board and tarnished terminals that hold the fuse. A quick shot of WD40 and scotch bright with a new fuse fixed that.

Relay pins were causing an intermittent problem in the socket. They have a little slot cut in the pins you can spread them with a small minus driver ( slotted screwdriver).

Third was the cable to the pump, being under the car it turned green after so many years it would not carry enough current.
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