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Unread 10-02-2013, 06:14 PM   #1
apmccullen94
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258 dipstick

Ok I've asked this before and haven't really got an answer. I got a 78 CJ-5 with a 258 V6. Oil leaks from around the dipstick. Not the tube, the actual stick. Looking at other's pictures, y'all have a gasket on there. I'm missing that. Is there anywhere I can order it? Or any other type of seal I can use? (ex. rubber o-ring or such) Thanks.

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Unread 10-02-2013, 06:54 PM   #2
LumpyGrits
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Install, the CORRECT, PCV valve.
After that---I will ask how many miles on your engine and the last time you did a compression test??
LG
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Unread 10-02-2013, 08:29 PM   #3
Ken4444
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1985 CJ7 
 
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The potential problem is that combustion pressure from the exploding fuel/air mixture is making its way past the piston rings and into the crankcase. From there it could potentiall push oil out of the dipstick hole. An engine that has a cylinder or more with lower compression than the others could be a sign of bad rings, causing the aforementioned problem. The correct PCV (positive crankcase ventilation) will allow crankcase pressure/gas to vent to the intake manifold but ultimately that's not a cure for bad rings. So even if you have the correct dipstick and it fits correctly in the tube, it could still get pushed out or be prone to leaking if the rings are bad.

To answer your actual question, I don't know if my 258 dipstick has a gasket or not I never really paid attention.
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Unread 10-02-2013, 08:54 PM   #4
LumpyGrits
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No real gasket as it's a friction fit deal at the top of the d'stick.
LG
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Unread 10-02-2013, 08:57 PM   #5
supersport126
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I got a 78 CJ-5 with a 258 V6.
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Unread 10-02-2013, 08:59 PM   #6
LumpyGrits
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Quote:
Originally Posted by supersport126 View Post
I got a 78 CJ-5 with a 258 V6.
Not a "V-6".
LG
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Unread 10-03-2013, 09:36 PM   #7
apmccullen94
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Fresh rebuild and brand new PCV valve and lines. And its an Straight 6, the best motor i've ever owned.
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