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The Cam timing adjuster plastic pads become brittle and break
Posted by: BrianC72gt (5512) on 2016-02-01 20:18:31 In Reply to: I agree posted by -TJ_c5's on 2016-02-01 11:54:50	Share \| Report

They can be purchased for very little money on e-bay.

Also, the cam timing adjuster assembly can wear out and oscillate on startup creating a tremendous racket. They are NOT so cheap. Crank the engine with the covers off and if one of them is bobbing up and down, then the retaining pin is not holding the plungers steady until oil pressure builds. This hammers the plastic shoes and can cause jumped timing or a chain jam that causes the timing belt to skip or break.

Add some high detergent oil intended for diesel engine or a quart of ATF, and that will help dissolve any deposits, but I doubt that is the problem.

Good luck,

Brian C.

Thread:

2002 S6 4.2 How to Replace the valve lifter? - hiroshi 2016-01-31 00:32:00 (304 views)
- Drive to China, trade for new! - berniebenz 2016-02-01 22:29:45 (191 views)
- "Engine warms up and the sound will disappear." I would leave it alone. - 4Driver4 2016-01-31 20:42:09 (197 views)
  - I agree - -TJ_c5's 2016-02-01 11:54:50 (330 views)
    - Thank you -TJ_c5,s - hiroshi 2016-02-02 07:58:46 (210 views)
    - The Cam timing adjuster plastic pads become brittle and break - BrianC72gt 2016-02-01 20:18:31 (242 views)
      - Thank you Brian. - hiroshi 2016-02-02 07:52:03 (188 views)
    - Same here, but it only lasts several seconds after start up. - ThetaTau87 2016-02-01 12:04:27 (190 views)
      - 2nd. Mine does on every cold start during colder months for sure, maybe even in the summer? - 520 2016-02-02 10:35:28 (164 views)
      - Add remote starter and you'll never know! - berniebenz 2016-02-01 22:32:32 (180 views)
  - I'd do an engine flush at least and change the oil/filter...re-evaluate after that. - kinderutz 2016-02-01 09:18:13 (180 views)
    - Appropriate snake oil next, if not sooner! - berniebenz 2016-02-01 22:34:42 (162 views)
- you need to find out if its an exhaust or intake lifter, if an exhaust one the timing belt must come - kinderutz 2016-01-31 18:56:33 (242 views)
  - Thank you kinderut. - hiroshi 2016-02-02 08:15:32 (168 views)
    - Take off valve cover and inspect lifters, you should be able to see if any of them look damaged or - kinderutz 2016-02-02 11:41:06 (161 views)
  - Yes..it appears to be a hydraulic lifter...it automatically adjust the cam-to-valve clearance. - SloopJohnB 2016-02-01 11:27:34 (218 views)
    - Thank you SloopJohnB. - hiroshi 2016-02-02 08:23:16 (171 views)
      - Same lifters intake/exhaust, no difference. - kinderutz 2016-02-02 11:42:26 (160 views)
    - Good to know! Rockers in there. Love em! - berniebenz 2016-02-01 22:38:28 (163 views)
    - Yup, I forgot to add that I use a Diesel oil also. - kinderutz 2016-02-01 11:38:10 (195 views)
      - Won't go that far, 87 oct. is all that is needed at 5K' alt. - berniebenz 2016-02-01 22:41:28 (182 views)

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