66 fuel pressure pump leaking

2004LB7

Well-known member
Dec 15, 2010
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Need more information. Did you prime it? Is it building any pressure? Walk us through what you have done so far. We can guess all day but it would be much easier for you to just tell us what you've done
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
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Merged your two threads and moved it all to the LMM section.

As 2004 asks, we need far more info than what you've posted. We dont have a crystal ball to see what you did.
 

Lovsey

New member
Aug 21, 2020
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Replace the fuel pressure pump ran for about 50 miles then just stopped running it is getting adequate pressure to run just not sure why it is not
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
Yeah... if you can’t explain further than what you are saying, your best to take it to an experienced mechanic.

Nothing you said gives us any ideas. We can’t work miracles off the little text you gave
 

ZeroGravity58

Well-known member
Mar 23, 2008
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I'm gonna shoot in the dark but maybe you got a bad cp3. Check your actual and desired rail pressure when cranking.
 

Lovsey

New member
Aug 21, 2020
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Well I'm not the mechanic thought maybe you guys were I knew more about it at fix my
self
 

Lovsey

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Aug 21, 2020
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And it is in a shop and they don't know what's wrong with it paid them 4000 fuel pressure pump on ran 50 miles quit running. Towed it back to them they don't know what's wrong
 

2004LB7

Well-known member
Dec 15, 2010
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Norcal
You need to take it to another mechanic

They should be checking the actual pressure and desired pressure. Return on the pump, pressure relief and each injector. Replace any out of spec. If everything is within spec then it is not the fuel system and possibly something else like cam or crank sensors, electrical, etc

Does it smoke at all? Proper cranking RPM? A good mechanic should know all this. Get your money back and take it elsewhere. Let us know where you are located. Maybe we have recommendations for a good shop near you
 

Lovsey

New member
Aug 21, 2020
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Thank you very much I live in Edwardsville Illinois shop that it is in it's alJets I guess they're a bunch of dumbasses they are in Staunton Illinois