RUNNING LEAN !!!!

97MUSCLESTANG · March 3rd, 2007, 07:56 PM

I need some help, my stang has been running kina sluggish and after idleing like at a stop when I give it gas some smoke comes out and the fumes are real strong, so today I pulled the plugs and they where white so I swaped them out and added a new left rear O2 sensor and mil eliminator. Well its running smooth and alot better but i'm still getting the fumes and smoke, its just a matter of time before I will have to replace the plugs again. Any suggestions please.

HMUSN · March 3rd, 2007, 08:02 PM

check your coolant level.
if it is low that could be the reason that you are smoking. you might want to do a compression test as well. if it is white smoke you could have a bad head gasket.

97MUSCLESTANG · March 3rd, 2007, 08:17 PM

my coolant level is good, i was told once before that if my air/fuel ratio was off it would cause it to run lean or rich and smoke unburnt fuel and that is what it smells like , its very strong if you get neer the tail pipes you eyes and nose will burn .

HMUSN · March 3rd, 2007, 08:25 PM

your running Rich if you smell fuel.

any check engine light??

i wouldn't advise running the car if your running super rich.

HMUSN · March 3rd, 2007, 08:25 PM

what's your mod list if any btw?

97MUSCLESTANG · March 3rd, 2007, 08:34 PM

Yes my check engine light was on but its been on since I put my O/R H-pipe on and every time I trip it , it sooner or later comes back on. My list is:
MAC O/R H-Pipe
MAC Pro Dumps
Cold air intake.
The list can go on but this is all that would mess with the engine.

Casper98GT · March 5th, 2007, 09:03 AM

you have off road pipes. Its going to smell like that

March 3rd, 2007, 07:56 PM	#1
97MUSCLESTANG Newbie Join Date: Mar 2007 Posts: 6	RUNNING LEAN !!!! I need some help, my stang has been running kina sluggish and after idleing like at a stop when I give it gas some smoke comes out and the fumes are real strong, so today I pulled the plugs and they where white so I swaped them out and added a new left rear O2 sensor and mil eliminator. Well its running smooth and alot better but i'm still getting the fumes and smoke, its just a matter of time before I will have to replace the plugs again. Any suggestions please.

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March 3rd, 2007, 08:17 PM	#3
97MUSCLESTANG Newbie Join Date: Mar 2007 Posts: 6	my coolant level is good, i was told once before that if my air/fuel ratio was off it would cause it to run lean or rich and smoke unburnt fuel and that is what it smells like , its very strong if you get neer the tail pipes you eyes and nose will burn .

March 3rd, 2007, 08:34 PM	#6
97MUSCLESTANG Newbie Join Date: Mar 2007 Posts: 6	Yes my check engine light was on but its been on since I put my O/R H-pipe on and every time I trip it , it sooner or later comes back on. My list is: MAC O/R H-Pipe MAC Pro Dumps Cold air intake. The list can go on but this is all that would mess with the engine.

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