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Greg
Dodge Dakota
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6/24/2006
10:24:35

Subject: oil soaked spark plug
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I have a 1997 5.2 , The #8 spark plug was oil soaked. I changed the plugs; @ 50 miles later it started missing. The #8 plug had the same problem. What are the possible causes?



RichmondOiler
Dodge Dakota
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6/24/2006
10:43:15

RE: oil soaked spark plug
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#8 hole is "oiling badly". Sounds like a bad oil control ring. Time for major repairs. Do a compression check, that should tell the story.



Obio3
Dodge Dakota
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6/24/2006
15:25:41

RE: oil soaked spark plug
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before you tear things apart, check the intake valve seal. You failed to mention milage but now days broken rings are rare.

So many problems .... So little time



RichmondOiler
Dodge Dakota
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6/25/2006
01:03:06

RE: oil soaked spark plug
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I doubt you can get enough oil down the valve guide to oil foul a plug.....A compression check/leak down test and a good plug to check the effectiveness of the the secondary system should give you some idea of whats wrong. Pretty simple troubleshooting to eliminate the easy stuff will reveal the real culprit.



Obio3
Dodge Dakota
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6/25/2006
02:16:33

RE: oil soaked spark plug
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He said it took 50 miles to foul. Also I did ask how many miles on the truck. Things do wear and wear allows more fluid/oil to pass then might be expected. On compression, you would be surprised at how much suction can be created. Also I think it would be a real shame to totally disasemble an engine to find all you needed to do was remove a valve cover. remove a rocker arm and a valve spring to fix in less then an hour. Bottom line. these things would be removed with an engine tear down anyway so no extra work is involved. My thoughts are better to check then be really sorry.I might add this . when you run a shop for over 40 years you would be surprised at the weird things you run across during repairs.

So many problems .... So little time.



RichmondOiler
Dodge Dakota
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6/25/2006
22:02:16

RE: oil soaked spark plug
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If the valve guides are worn enough to allow enough oil down them to foul the plug, the engine is junk. Simply putting on another seal will buy a little time I grant you, but removing the head and fixing it correctly will cause more problems since the top end will seal good and start pushing everything past the rings. You are right, checking things throughly will shed some light on the actual problem. Then he will not be treating symptoms. I have run a shop for 28 years - not quite the 40 you claim but we won't try to fix an oiler, serves no purpose! The customer will never be happy with it and we pride ourselves on doing good work and complete repairs that will not return in a month or two with more of the same problem.



shatto
Dodge Dakota
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6/25/2006
22:31:17

RE: oil soaked spark plug
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Us old guys know...
There are extenders you screw onto the end of the plug that keep oil off the electrode. That will keep it running until you have to pass smog then follow the previous advice.



Obio3
Dodge Dakota
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6/25/2006
23:23:43

RE: oil soaked spark plug
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I agree with the statement directed at all valves passing oil but he said only one is bad. I'm guessing the seal was long term defective and it let go/broke.... And your right, the engine needs a lot of wear to do as he sujests but if the rest are reasonably ok I think it would be worth a try being as he is doing it to his own rig, not a shop. I just have to think what ever it is has to be unusual at best. I haven't had the time to look but I'm also thinking there might be an oil passage to the rockers that passes close to that cylender and the head gasket gave way or the head cracked. I have to admit if this was 30 or so years ago I would expect most anything but things are a lot differant these days. Got to go with the flow of get lost in the croud.

So many problems .... So little time



jon v
Dodge Dakota
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4/14/2021
17:58:19

RE: oil soaked spark plug
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i have a 97 dodge Dakota 3.9 v6 and my closest
spark plug to the cab on the drivers side keeps
getting fouled with oil. Just took off the ohv and
the gaskets looks fine but still gunna replace I
just don't think that's gunna fix the problem not
sure what to do. Some of you guys said to take off
rocker arm and spring what should I do after that



jon v
Dodge Dakota
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4/14/2021
18:09:21

RE: oil soaked spark plug
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i have a 97 dodge Dakota 3.9 v6 and my closest
spark plug to the cab on the drivers side keeps
getting fouled with oil. Just took off the ohv and
the gaskets looks fine but still gunna replace I
just don't think that's gunna fix the problem not
sure what to do. Some of you guys said to take off
rocker arm and spring what should I do after that



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