Question about 2002 Ford SVT Focus

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2002 Ford Focus 2.0l SOHC running on 3 cylinders

Thought it just needed a tune-up because it was running ruff. So, new plugs new wires, oil change ( no water in the oil ), changed the fuel filter as well. After plugs and wires I added a 1/2 bottle of fuel injector cleaner (note: the guy at the parts store picked out the stuff and I asked him if he was sure because the cleaner said it was for diesel motors, he said he was). Ran ok for a couple of hours and then it started to run like **** again but even worse. Checked the plugs and wires again and found #3 cylinder wasn't firing properly. Changed that plug and wire again. No improvement. If I pull the #3 wire the car runs the same. Good plug and wire. I'm wondering if it's the distributor coil or a clogged fuel injector. The OBD code I get is P1311 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1. And lastly if you stand behind the car while its running it smells like burning oil.

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I had this problem too exept I have no clue what parts or blah b;ah blah. I just know that my coil pack was getting fried.burnt out because my wires were bad. The mechanic I went to was a moron because I took the car to him 3 times and he kept saying it was the coil ad kept replacing it. I took it to my uncle and he said my wires were in horrible shape and when this is the problem it fries your coil making your car run like a lawn mower! Well all i did was replace my wires and the car ran great! Well I hope this helped..

Posted on Mar 26, 2009

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SOUNDS LIKE IGN COIL BREAKING UP WHICH EXPLAINS THE FAULT CODE THE BURNING NOT SURE COULD BE WORN VALVE GUIDE SEALS OR WORSE CASE PISTON RING HAS FAILED.

Posted on Jan 14, 2009

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SOURCE: 2002 mitsubishi galant;which code would it be for

well thats a good question. the sensor may be ok and your engine is running lean, or the sensor is bad............its possible that its bad, but I would want it checked by a qualified repair shop first, you dont want to replace parts because you THINK they are bad, that just costs you even more money. The upstream is located in the bottom of the exhaust manifold. if its lean found out why..... vac leak?

Posted on Sep 23, 2009

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Posted on Jan 02, 2017

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What parts do you change when you get a tune up?


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Misfire p0303


Check wiring harness around and including plug to the coil pack. Also check fuel pressure with vehicle running. I'm not sure of the specs but, Iit should be around 35 to 40 psi. at idle, and 50 to 75 at higher RPM's. I've seen Fords run with a bad fuel pump and demonstrate these exact symptoms

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Only running on 3 cylinders number 2 plug keeps oiling up other 3 are fine put full set of new plugs in and ran great for 2 wks now running rough againtook plug out and cleaned it still no good wet black...


If the oil is on top of the plug, your valve cover gasket is leaking. (easy fix). If the oil is on the bottom of the plug (on the screw threads) you have a problem. It could be a burnt valve, blowed piston ring, or even a head gasket. Please let me know more info on EXACTLY where the oil is coming from. Hope this helps, James Booth

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What is needed for a tune up?


Thanks for choosing FixYa and welcome. For a tune up, you would need to change spark plugs, coils, distributor cap, coil pack, and wires. You would change the air filter and the fuel filter also. Change your pcv valve as well. You can also change all your fluids and filters, such as oil, coolant fluid, and transmission fluid.

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What does a major tune up for a 2004 chevy impala consist of? What should be done and needs to be done?


New spark plugs, oil and oil filter, transmission flush and fill, fuel filter, air filter, coolant flush and fill, clean throttle body plate and bore, clean the MAF sensor, replace any loose or cracked vacuum lines, PCV valve, new air filter, new battery.

99% of the time all you should ever need for a tune up is new spark plugs, and a clean air filter and throttle body. But since your inquiry indicated "major" I gave it more critical thought.

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No problems really,stalls once in a while. Just curious what consists of a tune-up on my engine. what I should replace and so on.


This would include your spark plugs or coils, the wires, a new distributor cap, an oil change, air filter, fuel filter, and a coolant flush. A tune up can make a car run like new again. Some don't change the fuel filter on a tune up but I have always said it is best too. They can get clogged up over time.

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How to give a tune up for a 1990 toyota 4runner?


with many new modern fuel injected vehicles its hard to give them a tune up without plugging them into a computer or getting an aftermarket computer chip and programmer.

however, if your toyota is running a little rough and getting bad gas mileage i would reccomend a new set of spark plugs and wires. and maybe a new fuel filter, i would do the spark plugs first, if the results are not satisfactory then change the spark plug wires, and if the results are still not up to your standards comparing the way it used to run to how it runs now then change the fuel filter. doing all these things will make the vehicle run clean and efficient like it should. and if it doesnt than im sure you have a vacum or oxygen sensor problem.

just wanna hop up the performance a little bit and get better fuel mileage?
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