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Old July 6th, 2006, 12:18 PM   #1
xlinkinpark2438x
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Default Please help

Its kinda a long one but if anyone can help that would be great soo i can go to the sandunes this weekend






I have a 92 explorer and today drove it from taylor to newport about 30 min drive and a couple of hours later i filled up on gas and came back to taylor and it ran fine and about an hour after i got back i went out to go somewhere nd my truck sounds like it hs a miss and is running rough. soo i took it around the block thinking that it just got carbon build up or something nd would just clear up but that did not help at all. i opend the hood and notice that there was gas on the connection from the manifold to the rest of the exhaust (not a perfect connection there) and figured a miss soo i checked all of my plug wires and they are all good. and the plugs were petty black soo i bought all new and that did no difference. soo i tried to narrow doun the problem and ran the engine on just the three cylinders on the passenger side and then on the driver side and noticed that the driver side 3 cylinders ran worse soo i had just those three connected and disconnected them one by one and found that the front cylinder on the driver side is not making any difference when i unplug it and plug it back in. and i am getting spark to the spark plug. and i am getting gas i know because i am getting gas leaking out at the manifold. i was woundering what anybodys thoughts are. and just for the record the truck has 290,000 miles and has been running exelcent for a while now i have driven it from 7oclock in the morning till about midnight doing escorting for manufactured homes a couple of times this year and ran exelcent. and now been using it to drive to and from work which is about 30 minutes away.

Last edited by xlinkinpark2438x; October 5th, 2006 at 03:54 AM.
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Old July 6th, 2006, 12:19 PM   #2
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and there is no EGR system soo that is not the problem
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Old July 6th, 2006, 12:56 PM   #3
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Is that a multi-port injected motor with an individual injector for each cylinder?

If so, you might have a bad injector.

Might want to do a compression check on that cylinder. Maybe a bad valve?
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Old July 6th, 2006, 01:25 PM   #4
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Quote:
Originally Posted by Haggar
Is that a multi-port injected motor with an individual injector for each cylinder?

If so, you might have a bad injector.

Might want to do a compression check on that cylinder. Maybe a bad valve?
yes it is a mlti port injection motor and now that you say about the valves i am thinking that maybe the exhaust valve could possibly be stuck open or cracked. because it seems like the gas from that cylinder is just going right through.

it looks like i am just going to haft to drive the jeep to the dunes (i hope it makes it)
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Old July 6th, 2006, 01:58 PM   #5
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Also, another test you could have done, rather than pulling cylinders, would be to squirt water onto the exahust runners, to see if one cylinder was cold, or colder than the others.

Could pull a valve cover and have a look when its running.
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Old August 16th, 2006, 08:17 PM   #6
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check the fuel pressure regulator to see if its leaking gas out of the vacuum line fitting.(not supposed to)
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Old August 16th, 2006, 08:36 PM   #7
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If that individual injector is stuck open it may be fouling the plug and pumping the gas right on through the cyl. A leak down test will give you the answer on the valves.
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