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  #1  
Old 02-01-2009, 03:20 PM
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Question Oil dipstick mystery

After any amount of driving, my oil dipstick has popped up from the check tube and is hanging sometimes an inch or two above the seated position. The last time it was out so far I could see the metal strip inside the tube. What gives? Does anyone elses do this?? Is my dipstick a jack-in-the-box? Im hoping this isnt from blow-by gasses from the cylinders Its only got 139K.
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  #2  
Old 02-01-2009, 03:37 PM
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Wink Re: Oil dipstick mystery

Just one of those things with an SVX, try replacing the o ring.
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  #3  
Old 02-01-2009, 03:47 PM
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Re: Oil dipstick mystery

Mine does it too. I wrapped some teflon plumbing tape around the o-ring and it worked for a while but did it again after a couple of weeks. A new o-ring sounds like a good cure and cheap too. I got my power steering reservoir o-ring for 10˘.
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  #4  
Old 02-01-2009, 03:51 PM
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Re: Oil dipstick mystery

Quote:
Originally Posted by SoCal LS-L View Post
After any amount of driving, my oil dipstick has popped up from the check tube and is hanging sometimes an inch or two above the seated position. The last time it was out so far I could see the metal strip inside the tube. What gives? Does anyone elses do this?? Is my dipstick a jack-in-the-box? Im hoping this isnt from blow-by gasses from the cylinders Its only got 139K.
It certainly is. The PCV needs replacing, to allow the case pressure to pass to the inlet.

Harvey.
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  #5  
Old 02-01-2009, 03:56 PM
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Re: Oil dipstick mystery

10 characters.

Last edited by essveeexxee; 10-19-2009 at 04:51 PM.
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  #6  
Old 02-01-2009, 03:58 PM
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Re: Oil dipstick mystery

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Last edited by essveeexxee; 10-19-2009 at 04:51 PM.
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  #7  
Old 02-01-2009, 04:02 PM
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Re: Oil dipstick mystery

What about when you have replaced the O-Ring and replaced the PCV valve and it continues to do it?
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  #8  
Old 02-01-2009, 05:46 PM
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Re: Oil dipstick mystery

Quote:
Originally Posted by essveeexxee View Post
Wouldn't that trip a code?
No the ECU can't tell.

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Originally Posted by wannarace928 View Post
What about when you have replaced the O-Ring and replaced the PCV valve and it continues to do it?
Yes mate, It can still happen, if the passages in the air box in front of the throttle bodies, are blocked with goo. This is the passages that connect the two cam cover breathers to the Ventilation valve.

If you look at where the two breather pipes enter the box, it looks like they just go straight in, but they both go into a small passage that connects through a restriction to the PCV valve.

These are where the engine flows the crank case pressure, under full throttle as the PCV valve is closed then.

I would pull the air box off and clean out the breather passages.

Harvey.
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  #9  
Old 02-01-2009, 08:02 PM
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Re: Oil dipstick mystery

Usually just replacing the O-ring does the trick. It may not be pressure build up, but just vibration that moves it up. After getting a new O-ring, it should stop doing that.
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  #10  
Old 02-01-2009, 08:49 PM
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Re: Oil dipstick mystery

that happend to my car when i bought it replaced the o ring like 10 months ago and havent had a prob since
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  #11  
Old 02-01-2009, 08:58 PM
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Re: Oil dipstick mystery

I was just wondering about this today. This a regular Autozone part?
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  #12  
Old 02-01-2009, 09:04 PM
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Re: Oil dipstick mystery

I would do the pcv anyhow. It can cause some weird ****.
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  #13  
Old 02-02-2009, 12:06 AM
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Re: Oil dipstick mystery

Quote:
Originally Posted by Mensaf View Post
I was just wondering about this today. This a regular Autozone part?
the pvc or the o ring?
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  #14  
Old 02-02-2009, 12:51 AM
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Re: Oil dipstick mystery

I would replace them both. You could start with the o-ring.
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  #15  
Old 02-04-2009, 05:07 AM
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Re: Oil dipstick mystery

Even with a bad O ring the dipstick should not pop without internal pressure.

As per Harvey's #8 post. Treat the cause, not the symptom.

Do the PCV valve. Clean the gunked up passages. Replace the O ring.

No more problems.

Joe
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