Question about 2003 Ford Escort

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Wont idle. low power

My car was running on 3 cylinders. Had a bad wire. I replaced the plugs (gap at .050) and the wires. I also replaced the air filter. My car wont idle and has no power when taking off from a stop light. I checked for a vacuum leak. All hoses looked fine. any help would be greatly appreciated.

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Are you sure you have wires on correct cylinders?

Posted on Sep 23, 2008

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Why did my idle speed go up after I replaced spark plugs on my 2003 jaguar x-type ? gapped at .054


The gap should be .050. The throttle body needs to be cleaned and/or idle air control is dirty or bad.

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replace fuel filter, clean fuel injectors.could have bad fuel, do a code scan before buying new parts.faulty egr valve or faulty engine coolant temperature sensor cause engine run poorly.replace spark plugs and wires because if spark plug wires is bad or spark plug and ignition coil is bad that will cause rough idling misfiring and stalling you have dead cylinder not firing properly..

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Car had code p0300 and p0303 which i do believe are engine misfire codes according to my code reader i replaced plugs with platinum plugs, new wires and replaced all 3 coils. Now all i get is code p0303....


303 IS CYLINDER #3 WITCH IS REAR BANK IN THE MIDDLE, TRY SWAPPING SPARK PLUG WIRES WITH ANOTHER CYLINDER AND SEE IF YOU GET ANOTHER CODE. MAKE SURE PLUGS ARE GAPPED CORRECTLY. IF IT IS NOT A SPARK PLUG OR WIRE, SUSPECT A BAD INJECTOR. 301-306 IS CYL,1-6. ALSO MAKE SURE THE PLUG WIRE GOT BACK ON THE PLUG CORRECTLY THEY ARE HARD TO REACH AND YOU MAY HAVE MISSED THE SPARK PLUG WHEN YOU PUT THE WIRE ON.

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My 1997 hyudai accent has a missfire code on cylinders 1 and 4 car has no power replaced plugs only change is the idle is much smoother. what else should i check


Main causes of misfire would be loss of spark; the air/fuel mixture is too far out of balance to ignite; or loss of compression.

Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. Causes include worn, fouled or damaged spark plugs, bad wires or even a cracked distributor cap. A weak coil or excessive rotor gas inside a distributor would affect all cylinders, not just a single cylinder.

"Lean misfire" can occur when the air/fuel mixture is too lean (not enough gasoline in the mixture) to burn. This can be caused by a dirty, clogged or inoperative fuel injector; air leaks; or low fuel pressure because of a weak pump, restricted filter or leaky pressure regulator.

Loss of compression means the cylinder loses most of its air/fuel mixture before it can be ignited. The most likely causes here are a leaky (burned) exhaust valve or a blown head gasket. If two adjacent cylinders are misfiring, it's likely the head gasket between them has failed. Also, if an engine is overheating or losing coolant, it's likely the head gasket is the culprit.

You can isolate the weak cylinder by temporarily disconnecting each of the spark plug wires, one at a time, while the engine is idling. When there's no change in the idle speed, then you have pinpointed the weak cylinder.

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What causes a misfire on a 99 pontiac grand am if spark plugs or good and the car does not have wires


here are the common causes of a missfire, defective ignition coil or ignition coil wiring for that cylinder, defective fuel injector, defective powertrain control module, intake manifold vacuum leak, low cylinder compression.

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Running roug at low idle, smooths out at 2500 rpms


change plug and wire if its been a while most cars have 90000 miles platinum plugs in them.but the wires wear before plugs.so change plugs and wires.+clean fuel injectors .change fuel filter and air filter.if car still run rough your idling to low.have idling check .

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1 Answer

86 toyota 4runner idles low and has half the power


Ok, there are four problem spots that i recommend inspecting the first would be the air filter.

The air filter may be clogged or dirty. this can decrease the power out put and it can also affect the idle as well. the next check point would be inspecting the spark plugs. make sue the plugs are correctly gapped and are not fouled in anyway. if they are fouled or incorrectly gapped, this will cause the symptoms you are experiencing at this time. Another check point will be the wire set(spark plug wires). make sure the wires are in good condition. remove all wires from the plugs and look inside the wire head t inspect the contacts. they should be nice and clean.if the wires are worn, replace them accordingly. the final check point will be checking the PCV valve. this valve is located Under hood, center, upper engine area, top of engine, mounted in valve cover. the testing procedure to be preformed on this specific device is stated below.


PCV VALVE TESTING PROCEDURE---

# Check the ventilation hoses and lines for leaks or clogging. Clean or replace as necessary.

# Locate the PCV valve in the cylinder head cover and remove it by pulling it upward.

# Blow into the crankcase end of the valve. There should be free passage of air through the valve.

# Blow into the intake manifold end of the valve. There should be little or no passage of air through the valve.

# If the PCV valve failed either of the preceding two checks, it will require replacement.


You will find the problem for you erratic or low idle in the areas above.

Please rate and god bless:)

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1 Answer

Replaced timing belt not running right


As Long as You ABSOLUTLY POSITIVE the Timing is Dead on , And Plyg WIRES are Not Crossed Then Hate to tell you It Must Have Taped a valve. Start it up and Let it Idle Take The Plug wires OFF 1 By 1 And Listen for NO DIFFERANCE in the IDLE the ones that Make NO Differance are the Bad Cylinders for LUCKS SAKE Check the Gap on the Spark Plug of Effected Cylinders and as I said Make sure the Spark Plug Wires are not Crossed. Hope it turns Out Good For Ya I Have Been there done that on My Personal Car I Feel your Worrie. Please Show some Care and Rate Me For This Solution Although its Not Potentualy the Best Outcome, Again I Hope for YOU Its A OOps as Aposed to a OUCH for ya, Easy, RejakWilson

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