11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHcold start issue
Reported or suspected cause
hydrolic valve lifters not being pumped up
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that report identifying a cause
1
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Reported cause
The ticking is caused by the hydrolic valve lifters not being pumped up.
Leading evidence: 'hydrolic valve lifters not being pumped up' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'hydrolic valve lifters not being pumped up' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Recommend list' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Performed · outcome unconfirmed
Use good oils, search out you favorite (I use Shell Helix Ultra)
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Performed · outcome unconfirmed
Use good oils, search out you favorite (I use Shell Helix Ultra)
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
Use whatever oil you want, but use one on the recommended list.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
oil wars on RL are worse than the Middle East, but it's my hypothesis that using a thicker oil will actually harm your engine on cold starts more than a thinner oil (cold).
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
i have a 99 c2 with 87k on the clock. after sitting overnight or a few days upon cold start the engine makes a ticking or knocking sound for about 10-15 seconds. then it seems that something pumps up and it gets softer until its gone.then it dose not happen again all day no matter how many times i start it.only after a cold soak. funny thing is the duration and number of ticks is not consistant. sometimes shorter but never longer. car runs great, no leaks at all no codes. fresh mobil 1 0-40 new plugs, all fiters replaced. oil pressure goes right up to 4.5 on the gauge so i believe pressure is there on start up. any ideas or input would be very helpful. thank you.
I have exactly the same thing. I would like to find out a reason for it. Seems like the all the oil has drained down and it takes a couple of seconds for oil pressure to rise.
When the car has been sitting for a long time the noise is really disturbing.
Fuel has no effect on this.
are you guys sure its not your air pump? Mine sounds like a bunch of ticks that quickly accelerates into an electric saw type sound. Def louder if the car has been sitting.
+1
The ticking is caused by the hydrolic valve lifters not being pumped up. As the engines get older the oil returns to the bottom of the engine and the lifters loose pressure from sitting. Once the engine oil pressure comes up, the "tick" goes away. The reason it takes a few minutes is that there is more "slop" in the parts then when it was new, and the pressure takes longer to build up. That and the lifters are at the end of the oil pressure "chain" when the pump is getting oil everywhere else before the lifters can come up .... is crank bearings, which since they are older and more "loose" require more oil before they are pressurized and the oil can go to the next thing and pressurize it.. and so on... lifter are one of the last things to get pressure when everything else is loose from age.
A good oil and frequent oil changes will help, but the parts are worn and will not get better w/o a super expensive fix (asked my indy shop - ouch!)
SO - live with it, keep the oil clean and fresh, drive it more often AND DO NOT REV the motor while it is ticking... wait till the ticking stops before driving. IF it gets to the point it always ticks, have it looked at, otherwise just enjoy every minute you can!
E
How about keeping the oil level close to maximum, would that be a good idea? Now I have kept the level in the middle.
My car has only 45 tmiles on it. The ticking just recently occurred.
dont go down the "oil question" road... that is a can of worms BUT yes I think on mine with 106k on a 3.4 mill I normally have only one light on top not lit, so full but NOT TOO FULL
Use good oils, search out you favorite (I use Shell Helix Ultra)
Change it often
Drive the car frequently
Remember, its mechanical, it will die, enjoy it while it is running and take the best care of it you can. Use it, dont abuse it, drive firmly and with purpose - let it warm up, and drive a little hard every so often.
My 0.02
I would
only
use a Porsche recommended oil... oil wars on RL are worse than the Middle East, but it's my hypothesis that using a thicker oil will actually harm your engine on cold starts more than a thinner oil (cold). It will take longer to work it's way up to the valves...
Use whatever oil you want, but use one on the recommended list.
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