Running rich, black smoke at idle

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Sep 1, 2002 | 04:23 AM

Rotormania

Thread Starter

Junior Member

Joined: Aug 2001

Posts: 21

Likes: 0

From: Limassol, Cyprus

Running rich, black smoke at idle

Running rich, black smoke at idle

Hello,

Do you guys know a way to adjust the fuel enritchment on 3rd Gens? My car i9s running really rich, black smoke at idle, and I cannot figure why because I have full exchaust and air filters (I should be running lean).
I know it doe not affect the engine that much but hearts my pocket. Here the price is 4 dollars a gallon and paying 20 bucks for a 60 mile trip is very expensive.

Thanks,

Charris

96 RS

Sep 1, 2002 | 04:55 AM

skunks

I'm a CF and poop smith

Joined: Aug 2001

Posts: 3,957

Likes: 1

From: Hawaii

If you got a full exhaust system and intake, you should be running lean! Perhaps your injectors are sticking open or something. Are you running a new ecu? what is your boost at?

Sep 3, 2002 | 04:39 PM

jpandes

Rotary Freak

Joined: Mar 2001

Posts: 2,236

Likes: 1

From: San Francisco, CA

Maybe you're plugs are fouled. I had my MAp sensor off and fouled my plugs. Making it seem like my car was running overly rich. I took em out and wire brushed em with a dremel and their all good again.

Sep 3, 2002 | 05:21 PM

Dont_Be_A_Rikki

Passenger

Posts: n/a

Sounds like the MAP sensor vacuum line has come off. Please check this. It is driver side fire wall marked Boost sensor with a vacuum line coming off to a check valve then to the mani fold.

-Rikki

Sep 4, 2002 | 01:17 PM

rotary-tt

2 babies - no back seats

Joined: Nov 2001

Posts: 981

Likes: 0

From: N. Wilm., Delaware?

This is the problem my FD was having when I brought it to PFS. It was also failing emissions. Peter tried replacing the plugs and the temp thermosensor but it did not fix it. Precision Tune found the problem: 2 hoses off under the intake in the rats nest. This cleared up the black smoke and fixed the emissions.