1997 Chrysler Concord w/3.5V6 DOHV oil leak


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1997 Chrysler Concord w/3.5V6 DOHV oil leak

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kirkbrim
New User

Feb 7, 2010, 6:15 PM

Post #1 of 3 (2916 views)

1997 Chrysler Concord w/3.5V6 DOHV oil leak	Sign In

Changed the plugs (this engine has those long spark plug access tubes that are nearly straight up and require a long extension) and when I retrieved the plugs there was fresh oil in 5 of the 6 tubes. Oil was up about 1 inch on the plug socket. When I re-started a lot of blue smoke came out. The dash oil light flickers on and off at warm idle 6,000rpm. How does oil pool up there? Never had any driveway oil leaks until now. Any ideas?

Hammer Time
Ultimate Carjunky / Moderator
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Feb 7, 2010, 7:33 PM

Post #2 of 3 (2911 views)

Re: 1997 Chrysler Concord w/3.5V6 DOHV oil leak	Sign In

The valve cover gasket has spark plug tube seals and they are leaking. When you removed the plug, the oil drained into the cylinder. That's the reason for the temporary smoke. Replace the valve cover gaskets to fix it.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

DanD
Veteran / Moderator
DanD profile image

Feb 8, 2010, 6:47 AM

Post #3 of 3 (2899 views)

Re: 1997 Chrysler Concord w/3.5V6 DOHV oil leak	Sign In

I have also seen oil in these tubes; due to them leaking from the bottom; where they are threaded into the cylinder head. You may need to remove the tubes and replace or reseal them. The service manual recommends replacing the tubes, due to them having a sealant already applied from their manufacturer. But I’ve been ok with removing the tubes; cleaning all oils from their threads and the threads in the cylinder head. And then applying, a bead of high quality automotive silicone to the threads; before reinstalling them.

Dan.

This shows the upper seal that Hammer Time mentioned.

This one shows the specialized tool for removing the tubes. LOL
I think almost all DIY’ers will have a couple of vice grips hanging around.

Canadian "EH"

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