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Thread: 300 TDI oil leak

  1. 30th May 2019, 06:55 PM #1
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    300 TDI oil leak

    On a 300 tdi there is 4 holes along the block in line with the cam shaft the 2nd one from the front started pumping oil out. Is there a plug or something that has fell out ? I suspect they are for drillings for the cam bearings. Any help would be good Thank you..
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  2. 31st May 2019, 06:28 AM #2
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    From memory they are threaded so nip them up with some sealant.
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  3. 2nd June 2019, 10:04 AM #3
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    Re oil leak

    After some investigation those holes are drillings through the block for oil galleries and are filled with silicone so they not noticeable. I would say they would be blocked off with the cam bush witch only has one hole at the bottom. So thinking the cam bush / bearing might have moved letting the oil soften the silicone sealer blowing it out with the oil pressure. If that is the case i will scrap it it don"t owe me a brass razoo...
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  4. 2nd June 2019, 03:47 PM #4
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    Quote Originally Posted by groucho View Post
    After some investigation those holes are drillings through the block for oil galleries and are filled with silicone so they not noticeable. I would say they would be blocked off with the cam bush witch only has one hole at the bottom. So thinking the cam bush / bearing might have moved letting the oil soften the silicone sealer blowing it out with the oil pressure. If that is the case i will scrap it it don"t owe me a brass razoo...
    It was the lifter retainer screws i'm thinking of that are threaded, your going to scrap a motor because of a leak ?
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  5. 2nd June 2019, 04:59 PM #5
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    Re oil leak

    IF the cam bush/bearing has spun in the block yes ..
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