Name that noise!! Engine tick
#31
Three Wheelin'
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Never bothered looking for causes, I am was not paranoid Porsche owner. I got the car with 117k miles, it made that noise when cold. I sold it with 130k+ miles 1.5 years later and it made same noise when cold. It drove fine, never used any oil and based on the acceleration videos was very healthy. I assumed it was a worn lifter as it would tick/knock only when you started the car and engine was cold, it never made the noise when engine was warm.
#32
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Never bothered looking for causes, I am was not paranoid Porsche owner. I got the car with 117k miles, it made that noise when cold. I sold it with 130k+ miles 1.5 years later and it made same noise when cold. It drove fine, never used any oil and based on the acceleration videos was very healthy. I assumed it was a worn lifter as it would tick/knock only when you started the car and it was cold, it never made the noise when it was warm.
#33
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Jumper, I remember your case...quite extreme and most experts think your engine won't last that long.
BTW, another good video by Jud (Flat 6 innovation) that can probably help diagnosing whether it's a lifter or scored cylinder.
BTW, another good video by Jud (Flat 6 innovation) that can probably help diagnosing whether it's a lifter or scored cylinder.
#35
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
It would be the same if imaging showed me to have cataracts or deterioration in my knees or hips. I would not get surgery unless it was impacting my QOL, so unless I had symptoms that were impacting my QOL, I wouldn't pay to have imaging done.
#36
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Jumper, I remember your case...quite extreme and most experts think your engine won't last that long.
BTW, another good video by Jud (Flat 6 innovation) that can probably help diagnosing whether it's a lifter or scored cylinder.
Porsche M96 Cylinder Failing - YouTube
BTW, another good video by Jud (Flat 6 innovation) that can probably help diagnosing whether it's a lifter or scored cylinder.
Porsche M96 Cylinder Failing - YouTube
#37
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I would agree that a borescope exam would be useful to confirm the diagnosis when symptoms such as oil consumption and/or smoking and/or the sooty tailpipe are present. From what I've read and been told, many if not most times a borescope will reveal some evidence of light scoring in almost all cylinder walls in all engines with many thousands of miles on them. Getting a diagnosis of scoring is not, to me, the same as a diagnosis of engine failure prompting a rebuild. For me there would have to be some additional quantified criteria, such as noise level of the knocking and whether it goes away shortly as the engine warms up and expansion negates the slap or is present always; and amount of oil consumption.
It would be the same if imaging showed me to have cataracts or deterioration in my knees or hips. I would not get surgery unless it was impacting my QOL, so unless I had symptoms that were impacting my QOL, I wouldn't pay to have imaging done.
It would be the same if imaging showed me to have cataracts or deterioration in my knees or hips. I would not get surgery unless it was impacting my QOL, so unless I had symptoms that were impacting my QOL, I wouldn't pay to have imaging done.
And you take that car to Mosport?! Amazing how much you can get out of that engine.
#38
Nordschleife Master
#40
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I would agree that a borescope exam would be useful to confirm the diagnosis when symptoms such as oil consumption and/or smoking and/or the sooty tailpipe are present. From what I've read and been told, many if not most times a borescope will reveal some evidence of light scoring in almost all cylinder walls in all engines with many thousands of miles on them..
#41
Racer
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I am not overly concerned as the car still runs extremely well, and of course at some point I will have to have been considering rebuilding anyway. In the meantime I will be enjoying the car as is and letting tomorrow worry about itself.
The updates will continue.
#42
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
You should also note to these guys that some of those 50km involved track miles too IIRC.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#43
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Quite a lot of track miles and driving to and from the track.
#45
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
My thinking is, if there was an inexpensive fix for scoring in its early stages that would avert needing to rebuild or exchange the engine, then I would see the urgency to get it scoped ASAP upon hearing the start of cold-idle ticking. (I'm excluding the option of pawning the car off on an unsuspecting buyer). But given there is no other fix, my personal preference would be to drive it until it was smoking embarrassingly and/or using oil excessively. Even a qt of oil every 500 miles is still much cheaper than a new engine. If the car could be driven another 5-10K miles or a year, that would give the person time to save up for a new engine, and put that many fewer miles on the new one.
I remember years ago driving cars tens of thousands of miles with piston slap and using more oil than normal. Maybe that colors my outlook. I do understand the concept of wanting one's Porsche in tip-top condition though. And, the concept of being disgusted that these cars have this kind of issue at such low mileage relatively-speaking for German cars. Our '03 e-class ran 130K miles with zero engine issues, our mechanic said he has customers with over 300K on them likewise, no slap, no measurable oil consumption between changes etc. Honestly had I known these Pcars had such problems (aside from the random odd failure) I would not have bought one, and I won't be buying another.
I remember years ago driving cars tens of thousands of miles with piston slap and using more oil than normal. Maybe that colors my outlook. I do understand the concept of wanting one's Porsche in tip-top condition though. And, the concept of being disgusted that these cars have this kind of issue at such low mileage relatively-speaking for German cars. Our '03 e-class ran 130K miles with zero engine issues, our mechanic said he has customers with over 300K on them likewise, no slap, no measurable oil consumption between changes etc. Honestly had I known these Pcars had such problems (aside from the random odd failure) I would not have bought one, and I won't be buying another.