car runs rich,,how can I lean it out??
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 75
Likes: 0
From: Sanford Maine
Car: 1990 firebird formula
Engine: 5.0 tpi
Transmission: t-5
car runs rich,,how can I lean it out??
its a 90 5.0 tpi in a formula.it runs rich,black smoke comes from the exhaust.mostly steady when the first start up then only when I rev it..how can I lean it out or are there even any adjustments?
Supreme Member
Joined: Apr 2007
Posts: 1,087
Likes: 1
From: St. Petersburg, FL
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700-R4
Axle/Gears: 2.73
Re: car runs rich,,how can I lean it out??
Maybe your spark is weak, have you replaced your coil pack, wires, dizzy, plugs "gapped properly", alt, bat ?
Also when we first start our cars no emissions are really working up to par yet, is the exhaust old ?
Also when we first start our cars no emissions are really working up to par yet, is the exhaust old ?
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 75
Likes: 0
From: Sanford Maine
Car: 1990 firebird formula
Engine: 5.0 tpi
Transmission: t-5
Re: car runs rich,,how can I lean it out??
just bought it for 500 bucks.it has ***** to the walls,can get 1st,2nd and a chirp in 3rd.didnt check anything yet but I noticed the tps only has one regular screw in it and the bottom one is snapped so I"m looking for a aftermarket TB.also when I first start it up I have to keep my foot on the gas to keep it running for about 3 mins then its fine
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 75
Likes: 0
From: Sanford Maine
Car: 1990 firebird formula
Engine: 5.0 tpi
Transmission: t-5
Re: car runs rich,,how can I lean it out??
yes the exhaust is old I think,theres no rot on the pipes.the muffler is a cheapo single one.no CEL lights are on
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