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bhartwell59
Samba Member
Joined: December 28, 2014
Posts: 793
Location: dallas, tx
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 Posted: Sun Sep 18, 2016 11:59 am Post subject: Where's this oil coming from? |
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Hopefully you can see what appears to be some oil pooling on the rear left engine tin... any ideas where it's coming from?
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'74 Zambezi green Ghia vert, autostick, 101k
'87 Jeep Wrangler, 4.2, 330k |
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SoCalJes
Samba Member
Joined: November 02, 2011
Posts: 1093
Location: Broward, FL
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| Posted: Sun Sep 18, 2016 12:18 pm Post subject: Re: Where's this oil coming from? |
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Most likely from the oil pressure sensor. I think you can see a drop on the bottom of the sensor.
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Jesse
71 Ghia
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mfitzsimor
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Joined: May 09, 2004
Posts: 171
Location: Portland, OR
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| Posted: Sun Sep 18, 2016 2:23 pm Post subject: Re: Where's this oil coming from? |
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I second the oil pressure sender. I've had them fail on both my VW's and BMW airheads - they start to leak internally.
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portland, or
69 cypress green ghia coupe
82 vanagon TD
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jwold
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Joined: September 30, 2008
Posts: 2088
Location: Portland, OR
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| Posted: Mon Sep 19, 2016 11:34 am Post subject: Re: Where's this oil coming from? |
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| Be careful not to overtighten the new sensor! The threads are supposed to be self-sealing. |
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SoCalJes
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Joined: November 02, 2011
Posts: 1093
Location: Broward, FL
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| Posted: Mon Sep 19, 2016 1:59 pm Post subject: Re: Where's this oil coming from? |
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| jwold wrote: |
| Be careful not to overtighten the new sensor! The threads are supposed to be self-sealing. |
Like it was threaded with a tapered tap?
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Jesse
71 Ghia
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bhartwell59
Samba Member
Joined: December 28, 2014
Posts: 793
Location: dallas, tx
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| Posted: Mon Sep 19, 2016 2:33 pm Post subject: Re: Where's this oil coming from? |
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How mission critical is this part?
I know I need to replace it but is it like "don't drive the car!"
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'74 Zambezi green Ghia vert, autostick, 101k
'87 Jeep Wrangler, 4.2, 330k |
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SoCalJes
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Joined: November 02, 2011
Posts: 1093
Location: Broward, FL
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| Posted: Mon Sep 19, 2016 3:54 pm Post subject: Re: Where's this oil coming from? |
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| bhartwell59 wrote: |
How mission critical is this part?
I know I need to replace it but is it like "don't drive the car!" |
It turns on an idiot oil light in your speedo if the oil pressure gets too low. Just try tightening it a little and see if it stops leaking. Tighten it too much and what you have now wont seen like a big deal.
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Jesse
71 Ghia
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Starbucket
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Joined: April 30, 2007
Posts: 4026
Location: WA
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| Posted: Mon Sep 19, 2016 4:00 pm Post subject: Re: Where's this oil coming from? |
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Start the motor and see where it's coming from and how much is dripping. Constant drip, buy a new sender if it's coming from the sender but if it's coming from the threads wrap with pipe tape and reinstall. If it's 1 drip every 10 min.s and coming from the sender don't sweat it but replace the sender soon as your car is probably leaving a trail of smoke.
Last edited by Starbucket on Mon Sep 19, 2016 4:03 pm; edited 1 time in total |
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SoCalJes
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Joined: November 02, 2011
Posts: 1093
Location: Broward, FL
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| Posted: Mon Sep 19, 2016 4:01 pm Post subject: Re: Where's this oil coming from? |
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Personally I like gauges because if the idiot light goes out its the same as not having one...
Sometimes you'll notice the light doesn't work when you find metal chips in your oil 
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Jesse
71 Ghia
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SoCalJes
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Joined: November 02, 2011
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Location: Broward, FL
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| Posted: Mon Sep 19, 2016 4:05 pm Post subject: Re: Where's this oil coming from? |
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| Starbucket wrote: |
| Start the motor and see where it's coming from and how much is dripping. Constant drip, buy a new sender if it's coming from the sender but if it's coming from the threads wrap with pipe tape and reinstall. |
Sometimes tape keeps the sender from getting a good ground since the sender gets its ground from the threads but I could be wrong.
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Jesse
71 Ghia
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jwold
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Joined: September 30, 2008
Posts: 2088
Location: Portland, OR
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| Posted: Tue Sep 20, 2016 9:54 am Post subject: Re: Where's this oil coming from? |
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| I've heard that as well. |
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Starbucket
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Joined: April 30, 2007
Posts: 4026
Location: WA
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| Posted: Tue Sep 20, 2016 11:32 am Post subject: Re: Where's this oil coming from? |
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| If you only use 1 wrap of Teflon tape on the lower 1/2 the upper 1/2 will make plenty of contact, besides if you remove a joint that had T-tape on the threads the tape is always cut through as the tapes purpose is to fill the thread gaps. I never had a problem with it. |
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SoCalJes
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Joined: November 02, 2011
Posts: 1093
Location: Broward, FL
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| Posted: Tue Sep 20, 2016 1:16 pm Post subject: Re: Where's this oil coming from? |
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| Starbucket wrote: |
| If you only use 1 wrap of Teflon tape on the lower 1/2 the upper 1/2 will make plenty of contact, besides if you remove a joint that had T-tape on the threads the tape is always cut through as the tapes purpose is to fill the thread gaps. I never had a problem with it. |
That makes sense. It probably got fame from people that use 2 1/2 feet on a 1/8" fitting
I don't know if I stopped using tape because of subconsciously thinking about the bad ground idea but I use Permatex thread sealer in a bottle that comes with a brush stuck to the lid and I've never had an issue with sensors or AN fittings leaking.
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Jesse
71 Ghia
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c21darrel
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bhartwell59
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Joined: December 28, 2014
Posts: 793
Location: dallas, tx
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| Posted: Tue Sep 20, 2016 5:10 pm Post subject: Re: Where's this oil coming from? |
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I think it has something to do with the autostick set up.
I went and gave the sensor a tightening only to find out it was rather loose. I'll keep an eye on it and see if that takes care of the leak.
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'74 Zambezi green Ghia vert, autostick, 101k
'87 Jeep Wrangler, 4.2, 330k |
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trelms
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Joined: August 06, 2015
Posts: 248
Location: Denver
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| Posted: Wed Sep 21, 2016 7:54 am Post subject: Re: Where's this oil coming from? |
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| bhartwell59 wrote: |
I think it has something to do with the autostick set up.
I went and gave the sensor a tightening only to find out it was rather loose. I'll keep an eye on it and see if that takes care of the leak. |
No, its for the EGR system
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swavananda
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Joined: February 14, 2009
Posts: 889
Location: Can o' Scruz
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| Posted: Wed Sep 21, 2016 8:29 pm Post subject: Re: Where's this oil coming from? |
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| c21darrel wrote: |
Unrelated...
What is the thru fitting on your tin? |
Ha ha..
Bit of a 'Early Snob' are ya darrel? |
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helowrench
Samba Member
Joined: August 27, 2003
Posts: 567
Location: dallas texas
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| Posted: Sun Sep 25, 2016 5:20 am Post subject: Re: Where's this oil coming from? |
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| SoCalJes wrote: |
| jwold wrote: |
| Be careful not to overtighten the new sensor! The threads are supposed to be self-sealing. |
Like it was threaded with a tapered tap? |
Yes, it is a NPT tapered thread.
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helowrench
Samba Member
Joined: August 27, 2003
Posts: 567
Location: dallas texas
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| Posted: Sun Sep 25, 2016 5:21 am Post subject: Re: Where's this oil coming from? |
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| bhartwell59 wrote: |
How mission critical is this part?
I know I need to replace it but is it like "don't drive the car!" |
You do not have signs of spewing, so I would say that it is not a grounding item.
Just check your oil level every 100-200 miles.
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73 914 1.7
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bhartwell59
Samba Member
Joined: December 28, 2014
Posts: 793
Location: dallas, tx
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| Posted: Sun Sep 25, 2016 7:37 am Post subject: Re: Where's this oil coming from? |
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After tightening the sensor a bit, I still have a drip. No biggie, a new is on its way.
Thanks all.
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'87 Jeep Wrangler, 4.2, 330k |
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