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  #51  
Old 04-20-2017, 09:32 AM
kk88rrc kk88rrc is offline
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Quote:
Originally Posted by AbnMike View Post
Manofspacebob: I posted my fuel pressure stats somewhere and no one said they seemed low. However the regulator is the only thing I haven't replaced.
Someone mentioned it seemed low back on post #38.

Have you pulled the vac hose off the FPR & check for any gas?
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  #52  
Old 04-20-2017, 10:00 AM
AbnMike AbnMike is offline
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Originally Posted by kk88rrc View Post
Someone mentioned it seemed low back on post #38.

Have you pulled the vac hose off the FPR & check for any gas?
Check for gas how? I've had the vac hose off to test the pressure and it jumps up as others said it should.
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  #53  
Old 04-20-2017, 12:14 PM
kk88rrc kk88rrc is offline
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Quote:
Originally Posted by AbnMike View Post
Check for gas how? I've had the vac hose off to test the pressure and it jumps up as others said it should.
It's to check the condition of the diaphragm in the FPR. If gas is present in hose or coming out of regulator, then the FPR is bad.

You're pressure jumping above 100psi can't be good.
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  #54  
Old 04-20-2017, 12:37 PM
AbnMike AbnMike is offline
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Quote:
Originally Posted by kk88rrc View Post
It's to check the condition of the diaphragm in the FPR. If gas is present in hose or coming out of regulator, then the FPR is bad.

You're pressure jumping above 100psi can't be good.
I don't recall there being fuel when I removed the vac hose.

What should it do when I clamp the return line?
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  #55  
Old 04-20-2017, 03:18 PM
kk88rrc kk88rrc is offline
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I do not know exact number but last time I tested mine it was 40 ignition on and 50 at idle with return line clamped. Also, the fact that your pressure drops from ignition on at 38psi to running at 2500rpm with 25psi doesn't look good. Age of fuel pump & filter?
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  #56  
Old 04-20-2017, 05:43 PM
AbnMike AbnMike is offline
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Quote:
Originally Posted by kk88rrc View Post
I do not know exact number but last time I tested mine it was 40 ignition on and 50 at idle with return line clamped. Also, the fact that your pressure drops from ignition on at 38psi to running at 2500rpm with 25psi doesn't look good. Age of fuel pump & filter?
Both are brand new.
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  #57  
Old 04-20-2017, 10:46 PM
mearstrae mearstrae is offline
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Start it up and pull the vacuum line off and plug it, then wait a few minutes (it may take while), and see if gas drips from the regulator. if so, it's shot and needs replaced (about a $50 item).
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  #58  
Old 04-24-2017, 09:05 AM
AbnMike AbnMike is offline
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Originally Posted by mearstrae View Post
Start it up and pull the vacuum line off and plug it, then wait a few minutes (it may take while), and see if gas drips from the regulator. if so, it's shot and needs replaced (about a $50 item).
I let it sit with the line off and plugged after a drive - and it probably sat for 5-10 mins. No leaks I could see.
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