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Spiderman
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Oil Pressure Sender Leak?
Having a minor but disappointing oil leak on my newly installed, rebuilt engine. Can see in the photo that I've got oil around the area below the oil pressure sender. I really didn't do anything with this at all during my rebuild, and I didn't remove the sender from the base so the original seal is still there. Is that the most likely source of a leak? Can I get to this thing in place, its obviously very tight quarters in there as my car is an 87 Carrera with AC. I tried snugging the Ferrule connection for the tensioner line and the 17mm sender base, same leak. The leak is even more pronounced after my removal of 30w break in oil and now back to 20-50. What is the sender seal, something I can PU at the autozone or advance?? I know I can order from Pelican but seems a waste for a 25 cent part.
 
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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03-20-2011, 09:13 AM
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Spiderman
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Remove Sender?
So I decided to remove the sender and not wanting to make things worse, how do you remove it ? Do I need a crow's foot to go 90 degrees under the thing or do you have to remove the base from between the tensioner line and the engine and take the sender off after its out ? I can't imaging a tool I own that'll get in there with it in place. Removing the whole thing will be difficult enough with the tensioner line fighting me. Don't want make it start leaking at its little brazed joints by pushing it all over Ideas??
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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03-20-2011, 09:23 AM
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Spiderman
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Yes, this is difficult
So I did some additional searching and did find threads where this has been significantly covered even for my 87. It is a pain and there is no getting around it. Looks like the smart method is removing the sender block and addressing all three crush washers as possible culprits. I did replace the two washers on the block bolt as re-assy so they're less likely the problem. I am going to consider the crow's foot method as it is possible to remove the sender from the block I'm told. Finding a single crows foot might be the biggest pain issue.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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03-20-2011, 09:34 AM
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Spiderman
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Got it fixed, turned out to be my bad at not thoroughly investigating the condition and drawing of the sender base and its two seal rings. I had not noticed that on the engine side of the bolt, there was a remnant of a crushed ring imbeded into the thread which kept me from being able to pull the bolt from the housing. I had just added a new seal ring not remembering whether an old one had come off. Bottom line, gouged out the old rings, both of them and pulled the bolt, cleaned everything and put on two new 12x18 size rings (not the skinny ones) from my seal kit and re-assy.. There was no leak at all at the base of the sender. Alot of tight space work but it seems to be leak free now! Very happy with myself. Ready for DE at NCCAR in 10 days.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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03-21-2011, 11:09 AM
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Money Pit
