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Discussion Starter #1 (Edited)
Yeah.....think mine is going (has gone) bad.

Turn the key and the engine turns over but will not start....no ignition.

It's been a tough start for about a week....but today, wouldn't start at all.

Is there an easy way to check for fuel pressure, or lack there-of?

Oh yeah....this is the '95 Impala with the LS3.

Thanks!

KW
 

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I believe theres a test port on the LS3 fuel rail.
Screw a gauge in ;)

Nab
 

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Yeah.....think mine is going (has gone) bad.

Turn the key and the engine turns over but will not start....or ignition.

It's be a tough start for about a week....but today, wouldn't start at all.

Is there an easy way to check for fuel pressure, or lack there-of?

Oh yeah....this is the '95 Impala with the LS3.

Thanks!

KW
So sounds like a "no start" condition and not sure of the issue but guessing at a pump right now? A few things...do u hear the pump prime with key on? Did you use the prime override to check the pump for longer than the prime? At this point your no start could be anything.

To answer your question about fuel pressure. Before mounting a gauge to the fuel rail, I would use a rag over the Schrader valve and push the pin to see if any fuel would spray out. At least you know u got fuel under pressure and making it there but no idea what it actually is without a gauge. Do some more tests and let us know what u find.

Edit - Doh! Missed the whole LS3 thing...sorry
 

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The pump/wiring could be half dead. It means there is fuel pressure but not enough to start and keep the engine running. When mine failed, the pressure was around 20 psi.
 

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Discussion Starter #6
20,000 post and you have a question. really? lol
Hey.....a brutha can't know (or remember) EVERYTHING!!! cwm2


Anyway.....UPDATE!

So I got the car started on Thursday and limped it down to my guys at Fuel Injection Specialties....a nice lil' shop here on San Antonio.

They put a scanner on the car and it reported about 21LBs of fuel pressure at idle. For a LS3....should be in the 60LB range. They checked the system front to back and it all checked good.....until the fuel pump. Yep....it was givin' up the ghost.

Swapped it for a TRE 255LB pump and all is right in the world again. :)

KW
 

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Discussion Starter #8
Did the wiring look good?
They said they looked almost good as new. But the system hadn't been touched since I bought the car in 2011. So not particularly surprised that the pump was ready to go.

KW
 
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