Question about 2000 Lincoln LS

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Fuel running rich, blowing gas out of one side of exhaust

I have a 2000 Lincoln LS that is spitting gas out of one side of the exhaust system and the car is running rough.

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One of the fuel injectors is leaking.
It is sending gas out even during the exhaust stroke.

You may be able to "hear" which one it is by using an auto stethoscope ($12) (like a doctor uses) and listen to each one of the injectors.

replace the faulty injector ... or use a can of fuel injector cleaner (name brand, not store brand) ($8).

Any auto parts store (Like AutoZone) will have it.

Hope this helps, soon!

Posted on Sep 10, 2009

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The fluid coming out your exhaust is more than likely not gas it is water the cat will burn the gas up and turn it into water although you can use a stethoscope to listen to the injectors it may not diagnose it properly especially if its stuck open since the solenoid will still work and the pintel will just be stuck or jammed open the best way i have found is to unplug an injector if it runs better then you know that injector is faulty sometimes it will run the same if it runs worse then the injector you unplugged is working properly and you SHOULD replace it not fixing this problem asap will burn up your cat and an oem replacement is about 1000 if your check engine light is on see if you can pull codes if it has a cylinder missfire code you may want to start there first

Posted on Sep 14, 2009


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A number of items may cause your engine to run rich. I'd guess given the year of the car I'd say the O2 (oxygen) sensor has failed. The O2 sensor is mounted in to the exhaust and it will dicate the amount of gasoline within the air/fuel mixture. If the O2 sensor fails the ECU will have the fuel system run rich rather then risk running too lean. Running too lean may cause heat issues and damage valves. Try taking your car to Autozone or such. Many part store will plug your computer in to a hand held reading device; this may show what the issue is.
I hope this may have helped,

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