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Thread: Oil on sparkplug threads
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05-09-2019, 11:27 PM #1
Oil on sparkplug threads
I have a sea-doo 2013 GTR 215.
When changing the plugs today, cylinder 2 had a good amont of oil on the sparkplug threads.
The jetski runs great, no misfiring.
Cylinder 1 & 3 have 140psi and cylinder2 has 120psi when I did a compression test.
I have read that the valve cover gasket may be the cilprit but I am wondering if that's the case, can this be a winter project?
What will happen if it's not addressed?
Thanks!
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05-10-2019, 12:07 AM #2
Was there any oil pooled around the base of the plug? There are small metal tubes that have gaskets at the base of them that surround the spark plugs. If you remove your valve cover you can see them. It may be that one of those isn't seated right and/or is leaking. Also, did you do your compression test on a warm or cold engine?
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05-10-2019, 02:04 AM #3
Yeah there was a little pooled around the base. Compression was when cold.
Good to know about the gaskets.
So 3 questions.
1. Can I ride this season and fix it this winter or is this something that needs to be addressed soon.
2. Can this cause a bigger problem? If so, what?
3. What should normal compression be?
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05-10-2019, 08:03 AM #4
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If it were me i would fix it asap. Shouldn't be more then removing valve cover and the tube for that plug and replacing the sean and putting valve cover back on.
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+1 by:
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05-10-2019, 12:26 PM #5
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05-10-2019, 12:54 PM #6
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yes should have the upper and lower seal on it
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05-10-2019, 08:18 PM #7
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- Sep 2018
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- Ellicott City, MD
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All 3 leaked on my '17. Being it was only a small amount figured it was from the bottom and put some silicone on the lower seals last time open while doing valve springs. Will see if that holds.
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05-11-2019, 06:32 PM #8
I ordered 3 new ones. Interesting on the silicone comment, just a small lining on the bottom seal I assume.
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05-12-2019, 10:45 PM #9
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- Aug 2018
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- Jax, FL
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Leaking spark plug tube seals is a common issue, even on new ski's. I had the seals replaced under warranty on two different ski's that I had.
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