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Old February 19th, 2011, 12:45   #1
Join Date: Oct 2004
TDI(s): 2000 Jetta
Fuel Economy: 46
Default Oil filter cap leak

Hey all, I have a problem that I can't solve. It seems that no matter what I try to do, tighten to cap more, loosen the cap a little, new filter, new O rings, new filter and O rings AGAIN!!!. I can't stop the leak from between the cap and housing. After each time I try, it seems the leak will be in a different spot. I marked the cap, removed and replaced cap, leak in totally different area.

Has anyone been through this before??

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Old February 19th, 2011, 13:01   #2
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Join Date: May 2009
Location: Ellenville, NY
Fuel Economy: 40-50mpg

Are you putting the O-ring in the correct spot? It MUST be in the groove that is in the cap. When you tighten, the o-ring should go between the metal filter housing and plastic filter cap.
99.5 Black Jetta TDI; DLC1019 nozzles, G60/VR6, ASV .5mm pistons, EGR delete, ASR/EDL, bilstein TCs MFA cluster.. Beater car. 365K miles and climbing.
99.5 Red Jetta TDI. Saved from the crusher. 270K
04 Jetta TDI .MFA cluster, reverse light mod, bilstein TCs 200K.
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Old February 19th, 2011, 13:22   #3
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Join Date: Jun 2010
Location: Palmer, AK
TDI(s): 05 Jetta

cap is available at the parts store, I got mine at Napa I believe around $20.
05 Jetta 4th Gen.
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Old February 19th, 2011, 13:24   #4
Join Date: Oct 2004
TDI(s): 2000 Jetta
Fuel Economy: 46

It is in the correct place. I have owned this car since new and now it has 270,000 miles and I have done almost all of the oil changes myself. I have never had this happen and it started about 5000 miles after an oil change if that helps.

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