Running Rich?
Thread Starter
Instructor
Joined: Sep 2005
Posts: 113
Likes: 0
From: Albuquerque NM
Running Rich?
91 - L98- no precats, muffler eliminators. Smell gas immediately after starting. Loads up at idle. Fuel mileage good. Injector resistance 17.9 to 18.5 ohms. Any Ideas?
Racer
Joined: May 2006
Posts: 281
Likes: 0
From: Urbana OH
I've got the same problem. I'm blame'n it on a leaking injector and I'm still running down all my vac leaks. Those two together is probably my problem but check your vac lines. Mine are getting brittle and breaking on me.
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
First thing I would look for is a vacuum leak. This introduces "false air" into the engine, which the ECM interprets as a lean condition and richens the mixture accordingly.
Put a vacuum gauge on the engine and tell us how many inches of vacuum you have at idle.
Put a vacuum gauge on the engine and tell us how many inches of vacuum you have at idle.
Advanced
Joined: Dec 2002
Posts: 69
Likes: 1
From: Bremen
When you start, does it fire right up or do you get a strange shaking until the engine runs smooth? I had the shaking going on, my #3 injector was leaking. There was a strong gasoline odor coming out of the throttle body. To track it down I removed the spark plugs and at cylinder #3 I knew instantly by the smell coming out of the hole that it was leaking.
Half a bottle of "Red Line" Complete Fuel System Cleaner did the trick. Every tenth fill up or so the tank gets another shot.
Worked fine for me for the last 5k miles.
Half a bottle of "Red Line" Complete Fuel System Cleaner did the trick. Every tenth fill up or so the tank gets another shot.
Worked fine for me for the last 5k miles.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Leaking injector, or leaking FPR. Pull the vacuum line off of it and make sure theres no fuel coming out of the nipple in the FPR.
Thread Starter
Instructor
Joined: Sep 2005
Posts: 113
Likes: 0
From: Albuquerque NM
Racer
Joined: May 2006
Posts: 281
Likes: 0
From: Urbana OH
Fuel Pressure Regulator. Under the plentium right beside the distributor. Look for a small round device about 1 1/4 across with a vacume line running into it. Will look like a little top hat.
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Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
Yep....sorry, missed the "immediately after starting" part. Getting old sucks....not only can't hear anymore, can't read either.
