Question about 1993 Ford Explorer Limited

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Car has a miss at idle one plug is black - 1993 Ford Explorer Limited

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Possible one Valve Seal cover is cracked or broken.ther by leting oil entering the chamber......or compression ring worn.....but prefer the first option first test compression

Posted on Jul 18, 2008

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Smell fuel when idling


Were your plugs gaped correctly?

When you pulled the old plugs, were they very black or covered in oil?

If they were black, you have an oil leak. Check the area around the wires and see if there is any excessive oil buildup.

The fuel smell would be coming from the unburned fuel passing through your engine.

Did you have all the wires put back on one at a time? If not, you might have gotten the firing order wrong, or you have a bad coil pack.

Jan 08, 2014 | Chrysler Cars & Trucks

1 Answer

I have an 1987 gmc jimmy s15 with a tbi 2.8 v6 with about 201000 miles on it.I've been haveing a few issues with a bad miss and revs at idle and now is blowing black smoke. I've changed the plugs...


Bad miss & erratic idle can be the T.P.S. had the same problem on an 89 S10 & 91 Sonoma. As for black smoke sounds like oil in cylinders. If the truck has REALLY bad blow by & REALLY worn P.C.V. Valve that can make it smoke too. If not then probably the piston rings with that many miles.

Nov 04, 2012 | Cars & Trucks

1 Answer

Car miss's


For engine misfiring problem check the help links mentioned below.Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html-----------Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
-----------While stop engine idles like cylinder missing? http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
------------Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html


Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires? http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
----------This will help.Thanks.

Feb 17, 2012 | 1993 Nissan Maxima

1 Answer

My vw golf 4 2.0l won't rave but idles roughly


check spark plugs and distributor. look for bad wear and missing parts. It must be a faulty spark plug which is not igniting fuel in one cylinder. If you decide to replace the plugs its best to change all of them.

Jul 11, 2011 | 2000 Volkswagen Golf

2 Answers

Rough idle and black smoke from tailpipe


black smoke indicates unburnt fuel.....and unstable idle, means you are properly missing one or morre cylinders.......have you recently had a tuneup or maintenance performed on your car

Sep 13, 2010 | 1989 Pontiac Grand Am

1 Answer

Engine has a very bad miss in it


The ignition coil pack (the black thing all the plug wires hook to) is probably cracked. Remove it and look for cracks on the bottom and sides. If it is cracked replace it.

Apr 14, 2010 | 2001 Ford Focus

1 Answer

I have a 2006 nissan altima that misses while driving


Misses that occur only under load are typically spark related. Engines typically need about 8000 to 12000 volts of spark energy to idle, but under load and acceleration, they can require as many as 30,000 volts. Weak coils frquently can still make 10-15000 volts, enough for light cruising and idling, but insufficient for load. Further, a defective boot or carbon tracked sprak plug may fire normally at idle and cruise, but "arc" down a black carbon track in the plug porcelin under load. You should take the car to someone who has the equipment to propely examine misfires. Or if you really feel the need to do it yourself, you could try pulling all spark plugs one at a time( assuming you dont have a scantool or trouble code data to point you to a specific cylinder) and visually inspecting them. They should ALL be clean and dry and white all around. If you see any black lines or marks in the porcelin of any spark plug, replace both that plug, and the wire or coil boot attatched to it. If you dont see any dirty or wet or oil soaked plugs, you likely have a weak coil that will require scan, scope, or load testing to isolate. Most professional shops have the equipment to do this.

Sep 15, 2009 | 2006 Nissan Altima

1 Answer

RUNNING RICH AND MISSES,IT SMOKES BLACK


check your spark plug wires to make sure they are in the correct firing order, thats what it seems like the problem is

Apr 18, 2009 | 1993 Toyota Pickup

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