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Old 10-18-2013, 10:23 PM   #1
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Big mechanical issues

My intake manifold gasket, oil pan, cylinder head and crank seal are all bad or going bad!?!! I haven't even hit 50k miles?? Any IDEA why I'm having these problems?

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Old 10-19-2013, 08:18 AM   #2
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Originally Posted by Daltontj View Post
My intake manifold gasket, oil pan, cylinder head and crank seal are all bad or going bad!?!! I haven't even hit 50k miles?? Any IDEA why I'm having these problems?

What weight motor oil have you or previous owners been using? Sounds like an excessive pressure situation. Flood vehicle?

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Old 10-19-2013, 08:23 AM   #3
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Did the Jeep sit for a long period? My F250 had several seals go bad after sitting for over a year, they dried up from lack of use.
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Old 10-19-2013, 12:31 PM   #4
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Somethin' doesn't sound right here. The odds of all those going south at the same time is beyond rare I'd think. Especially the pan gasket claim.
Easy to claim they are failing. What symptoms are present? Have you tried a tracer in your oil to verify these assertions?
However, I do hear the Pentastar uses no head gaskets. Just sealant. Repetitive heat cycles can cause seals to fail from expansion/contraction cycles. Perhaps more in northern locations.
So perhaps this is what your up against. The shaft seals thing sounds suspect too.
However, you do have a powertrain warranty which would cover these anomalies.
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Old 10-19-2013, 04:22 PM   #5
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Originally Posted by jeepers29 View Post
Did the Jeep sit for a long period? My F250 had several seals go bad after sitting for over a year, they dried up from lack of use.
I had the same problem with a YJ after it was out of commission for almost 18 months, but it was already 6 years old. It also overheated several times. How old is your JK?

With that man seals going bad there is a systemic problem with either the oil, and additive or lack of use.
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Old 10-19-2013, 05:54 PM   #6
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I've taken it for regular oil changes but the jeep did sit for a long time before it was bought by me it's an 07 that a bought a 15 months ago with 27k mikes
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Old 10-19-2013, 05:58 PM   #7
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Miles***
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Old 10-19-2013, 06:23 PM   #8
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Seals and gaskets are very common on vehicles that sit for a long periods of time then are required for daily use. Seals and gaskets dry out and get brittle from none use and the absence of oil circulating around them.
I have purchased many older vehicles over the years with low mileage and this is usually the issue with those low mileage gems that you find in granny's barn.
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Old 10-20-2013, 10:35 AM   #9
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When you bought it did you put synthetic in an engine that had been sitting awhile?

Use a high mileage motor oil. They have additives that will help condition the gaskets and soften them back up so they will seal better. Like said above. The gaskets and seals will get hard and brittle when something sits for a long time.

Drive it often and don't baby it. After 1 oil chance interval, the leaks should stop. On the next OCI use high mileage oil again. Clean everything up in the leaking areas to confirm.

There are several brands of oil out there for vehicles that have over 75k miles. Pick one in 5w30 and go with it. Do not go with a thicker oil to try to stop a leak. It will do more harm than good.
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Old 10-20-2013, 03:12 PM   #10
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Could be a Crank Case Pressure problem......Just for giggles change the PCV valve.....

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Old 10-22-2013, 01:33 AM   #11
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Thanks for all the input guys!

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