Always pinging problem
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New User
Joined: Nov 2004
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Always pinging problem
I always pinging problem with my Ranger 1999, 4.0L 4x4. But I have new fact about that. I observed that when I changed the spark plugs it stopped pinging. After few weeks it restart pinging. I removed all spark plugs and two of them on the left engine head are cover with oil deposit ( see photo ).
Is someone know the cause of this oil deposit?
Is someone know the cause of this oil deposit?
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New User
Joined: Nov 2004
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Possibly NKG are not very good spark plug but before that I used Motocraf (ford) one and I had the same problem.
About intake leak. I observed that I also have a little bit of oil deposit on wires an pipes beside the left intake. But is it normal I have oil deposit only on 2 of the 3 spark plugs on the same head ( intake)?
About intake leak. I observed that I also have a little bit of oil deposit on wires an pipes beside the left intake. But is it normal I have oil deposit only on 2 of the 3 spark plugs on the same head ( intake)?
Elder User
Joined: Jul 2003
Posts: 649
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From: north carolina
just an idea... it could be possible that a few of your valve seats on that head have back out just enough to let oil slip in ,, my best friend had this problem on his 87 ranger. he would change plugs and it would run fine for a few days till they cloged.. then it would start missing again.
Elder User
Joined: Oct 2001
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From: Cypress, CA
Geof: Question: Since I can not seem to look at your picture and you mention oil on the wires is the oil on the outside of the spark plug? If so one could easily suspect a valve cover gasket.
Many have made statements with regard to the adverse effects of using other than Motorcraft spark plugs. Need a little more information clarity and will try and help out.
Russ
Many have made statements with regard to the adverse effects of using other than Motorcraft spark plugs. Need a little more information clarity and will try and help out.
Russ
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New User
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Yes I had a little bit of oil on the outside part of the spark plug and on the wires. I don't understand the problem with valve gasket and why if oil leak by the valve, I have oil on my wires and on the outside part of the sprak plug. I understand it is normal I have oil on the sprak plug but why I have it outside?
Do you have a method to test the valve gasket? Is it difficult to have acces and repair it?
Thank you
Do you have a method to test the valve gasket? Is it difficult to have acces and repair it?
Thank you
Posting Guru
Joined: Nov 2003
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like rangerruss stated, suspect the VALVE COVER GASKET not the valve gasket. if oil gets past the valve cover gasket, it will be on the outside of the engine and that is probably why you have oil on your plugs snd wires.
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Elder User
Joined: Oct 2001
Posts: 724
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From: Cypress, CA
You could try tightening the bolts that hold your valve cover in place. Do not over-tighten them as they may break off. Sometimes that will cure the problem otherwise you are looking at changing the gasket.
Russ
Russ
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