Haalex
Trainee
- Joined
- 6 Jul 2023
- Messages
- 92
Hey guys,
I mentioned this issue in my introduction post, but this section is probably a better place to discuss it.
I recently acquired a 996.1 with a smidge over 40k mile, late 98 build. For peace of mind, I elected to have the IMS & clutch replaced immediately after purchase. IMS was a dual row in perfect condition, so not sure this was very useful.
Shortly after my purchase, the car developped a massive ticking noise which turned out to be a stuck lifter on bank 1, that "sorted itself" with an oil change. The car pickup, transportation, labour, oil and filter were all taken care of by the shop that did the IMS, as they felt it was the right thing to do on a car that had an issue shortly after leaving their premises.
In the following 3-4 months, I drove the car for another 800-900 miles, and noticed it was sometimes a bit shaky on idle, and had a light cold start tick that would go away within a minute. No oil consumption, codes, it had good power delivery and got around 25mpg. Then, all of a sudden (and, as irony would have it, right as I was driving to pick up supplies to make a 911-shaped wooden toy car for my child), driving 50mph on an off-ramp, I downshifted into 5th and cylinder 2 stopped firing. Limped the car home (which was close), check codes, of which it had P300 + P302, tried to swap coils (to no avail), and had it flatbedded to the shop that did the IMS. They found an exhaust valve on cylinder 2 isn't closing all the way, and some traces of water in the oil in that cylinder.
The engine is slated to come out in the next couple of weeks. The head mechanic hopes the issue can be solved without removing the head, which I doubt.
This was a seldom driven car before I acquired it (6k miles in 10 years), so I think my more frequent and taxing use might have awoken an existing issue.
Does this sound familiar to anyone here? Any advice / opinion?
I'll keep you posted as I get more info.
Alex
I mentioned this issue in my introduction post, but this section is probably a better place to discuss it.
I recently acquired a 996.1 with a smidge over 40k mile, late 98 build. For peace of mind, I elected to have the IMS & clutch replaced immediately after purchase. IMS was a dual row in perfect condition, so not sure this was very useful.
Shortly after my purchase, the car developped a massive ticking noise which turned out to be a stuck lifter on bank 1, that "sorted itself" with an oil change. The car pickup, transportation, labour, oil and filter were all taken care of by the shop that did the IMS, as they felt it was the right thing to do on a car that had an issue shortly after leaving their premises.
In the following 3-4 months, I drove the car for another 800-900 miles, and noticed it was sometimes a bit shaky on idle, and had a light cold start tick that would go away within a minute. No oil consumption, codes, it had good power delivery and got around 25mpg. Then, all of a sudden (and, as irony would have it, right as I was driving to pick up supplies to make a 911-shaped wooden toy car for my child), driving 50mph on an off-ramp, I downshifted into 5th and cylinder 2 stopped firing. Limped the car home (which was close), check codes, of which it had P300 + P302, tried to swap coils (to no avail), and had it flatbedded to the shop that did the IMS. They found an exhaust valve on cylinder 2 isn't closing all the way, and some traces of water in the oil in that cylinder.
The engine is slated to come out in the next couple of weeks. The head mechanic hopes the issue can be solved without removing the head, which I doubt.
This was a seldom driven car before I acquired it (6k miles in 10 years), so I think my more frequent and taxing use might have awoken an existing issue.
Does this sound familiar to anyone here? Any advice / opinion?
I'll keep you posted as I get more info.
Alex
