Question about 2001 Ford F250 Super Duty Super Cab

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2001 f 250 super duty

My truck runs like on 7 cylinders some time i just tuned it up and all the spark plugs were fine none were fouled out all clean white

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  • yadayada
    yadayada May 11, 2010

    Have you tested the injector on the cylinder that is mis-firing? Do you have a misfire code?

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  • 360 Answers

Do a leak down test to see if you have a bad vale or bad rings

Posted on Oct 28, 2008

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1998 bmw 540i having a misfire on cylinder 5 changed the plugs and coil packs. It ran fine for a couple days, then it began again, giving me a check engine, and it's idling rough at low rpms.


Is the same cylinder causing the problem? If so take a close look at the spark plug for fuel fouling. The cylinder may be over fueled causing plug fouling. You may also have a bad coil or defective spark plug. Try swapping coil and plug with one from adjacent cylinder to see if misfire changes to that cylinder

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02 mitsubishi lancer oz rally automatic and when I turned it off the engine sputtered a little so I turned it back on started up back fine and shut it off and it sputter again Its neverdone thisHelp?


I think what you are describing may be "run on" or Dieseling" which is a way of saying that an ngine with spark plugs that should stop when the key is turned off, continues to run in a rough manner. This is typically caused by glowing carbon in the cylinder, often on the head next to a fouled spark plug tip.
I would recommend changing the spark plugs and spending the $ for some "tune up in a can" that removes carbon deposits from inside the cylinders.
Hope this helps.

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Wont start


check the distributor & rotor arm & clean with fine grade sandpaper if required,
try this: check the fuel pump it should make a whirring sound when try to start the car, put the key in the ignition & turn it a couple of clicks but do not turn the car over, if you hear the whirring sound the fuel pump is working if not then change the relay for the fuel pump & try again, if you now hear the fuel pump working then turn the ignition off then on a couple of clicks then off again, do this two or three times then try & start the car, failing this it could be a problem with the coils, the spark plugs, the leads, or it could be bad compression in your cylinders. try all of the above before considering faulty cylinders/piston rings as this is very unlikely on a 7 year lod vehicle unless it has been thrashed & treated to a very hard life. please rate my answer, Paul.

Sep 21, 2012 | 2005 Ford F 250 Super Duty

1 Answer

Hi I have Lexus Rx300 year 1999. The problem is, some time when I start the engine, I noticed that the RPM meter shows low and the car little viberate and engine stops. But if in-between I push...


REPLACE SPARK PLUGS AND WIRES AND CLEAN FUEL INJECTORS. SOUND LIKE FUEL INJECTORS LEAKING FOULING OUT SPARK PLUGS WHEN YOU TURN OFF ENGINE.WHEN YOU START CAR UP NEXT MORNING CYLINDERS MISFIRING SO BAD FROM FOUL PLUGS ENOUGH SHAKE ENGINE.WHEN ENGINE RUNS FOR FEW MINUTES THAT WILL BURN OFF FOUL SPARK PLUGS UNTIL ENGINE RUN NORMAL.

Sep 06, 2011 | 2000 Lexus RX 300

1 Answer

Oil in #1 spark plug tube, plug wire popped off changed valve cover gasket and the upper tube seals. It ran fine for about an hour then started missing again


Was the plug fouled again after you made repairs? Did you install a new plug and run it? If the plug itself is fouling you probably also see blue smoke in the exhaust pipe. Get the engine warm, check compression and do what is called a cylinder leakage test, it puts a volume of air into each cylinder with the valves closed and how much air leaks out determines the over all health of the engine. Does the engine have excess oil consumption? The oil entering the cylinder and fouling the plug can enter from a worn valve guide or guide seal, a worn or damaged oil control piston ring or a worn or damaged piston bore or piston, none of which are going to be inexpensive to fix.

Good luck, i hope this helps.

Jul 01, 2011 | 1995 Honda Accord

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1997 Nissan 2.4L misfire at idle only


check plug and wire- wire may be burnt or jumping fire-plug may be loose---distributor may have cracked --if not above do compression check maybe blown head gasket

Jul 02, 2010 | 1997 Nissan Pickup

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I have a 2002 Ford Super duty 250 4-wheel drive. One of the spark plugs came out and it almost looks like something was hitting the end of it. The truck was running fine till the plug came out,no noise or...


good day, if there are some engine surplus shop available in your place then you can just buy the cylinder head to cost you less. hope this helps, have a nice day

Feb 07, 2010 | 2002 Ford F250 Super Duty SuperCab

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