Another Injector Replacement Gone Bad

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May 3, 2008 | 07:37 AM

#21

65Z01

Team Owner

Joined: Dec 2000

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From: SE NY

Cruise-In II Veteran

Quote:

Would that not also produce a fuel leak?

That would produce an excessive air leak into the manifold which would mess up the A/F ratio and so the idle.

May 3, 2008 | 11:53 PM

#22

Stewball

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From: Mentor Ohio

ttt

May 4, 2008 | 09:30 AM

#23

Redeasysport

Le Mans Master

Joined: Dec 2004

Posts: 5,789

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From: Myrtle Beach SC

St. Jude Donor '05-'06

Quote:

Originally Posted by Stewball

As soon as you turn it off the pressure drops like a rock so I have a leak down somewhere will have to try the FSM to fix that after I get this thing running. Inspected all vacuum lines again today and pinched each off while having someone keep it running still nothing. .

Did you smell the vacuum line coming from the FPR? 1 of 3 things cause this the FPR, A badly stuck injector, or the fuel check valve. You can eliminate the check valve by pinching the hose at the tank after pressurising the line. The FPR vacuum will smell like gas. The injectors when taken out and stuck in a 5 gal bucket and pressurised. One of the 3 will leak. Never

use a propane torch to check for fuel links unless you have a deathwish and a good life insurance policy.

May 4, 2008 | 11:10 AM

#24

Stewball

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From: Mentor Ohio

Thanks for the info.The propane tank was used to test the Cold Start flange to see if it was leaking air. Trying to determine if that is the point of the vacuum leak.

May 4, 2008 | 06:45 PM

#25

RACER 1993

Racer

Joined: Sep 2007

Posts: 393

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From: Bartonville Illinois

Did you double check you distributor install?

You need someone to turn it over while you have you thumb over number one spark plug hole. Whe it pushes your thumb away both valves will be closed and this is TDC. Your rotor tip should be pointing to number one on cap. If you have a harmonic balancer that has a line and indicator if they line up your right on.