fuel pressure problem!

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May 15, 2011 | 03:42 PM

Roast!

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fuel pressure problem!

would low fuel pressure (40psi) cause a ls1 not to fire up,

May 15, 2011 | 03:48 PM

speedsk899

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From: Bedford, IN

You should probably give more information about the problem.....

May 15, 2011 | 04:02 PM

Roast!

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ok, i put a ls1 in my 3rd gen. using a speartech harness,purchased a msd fuel pump and a corvette filter/regulator. 40 psi at the fuel rail. would that cause a no start?

May 15, 2011 | 04:06 PM

speedsk899

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From: Bedford, IN

Quote:

Originally Posted by Roast!

ok, i put a ls1 in my 3rd gen. using a speartech harness,purchased a msd fuel pump and a corvette filter/regulator. 40 psi at the fuel rail. would that cause a no start?

Does it fire at all? just turn over? is there spark? Low fuel pressure wont cause it to not fire, it may run like **** or die, thats not that low though, would probably just idle lean....

May 16, 2011 | 02:21 PM

Roast!

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fuel?

got spark at #1 she cranks, one small backfire, then nothing, does the ecm need to be grounded?

May 16, 2011 | 05:43 PM

speedsk899

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From: Bedford, IN

There are grounds throughout the harness that need to be grounded. The factory harness has two on the back of the driver head. There is another that goes from the block to the frame rail on the driver side.....I am sure there are more but I don't know the exact locations

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