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Potential IMS Issue

Does my 993 have the potential of an IMS issue or is that later models ...any advice

993 Engine Check Light

I have just joined PCA and know there has been much correspondence in the past regarding the dreaded CEL light.  Every year I dread the smog test and spend money to get a mechanic to "turn off" the light for a few miles of relief only, during which I rush to the smog station.  Many mechanics and dealers and dollars later I am so worn out by this cycle that I am even thinking of selling -- although I can't sell it with the CEL on!  There has never been a problem showing with the diagnostics and they say there is nothing to fix.

Air hose not connected?


I was recently cleaning the engine bay on my 993 and noticed the small hose connected at one end, but not connected to anything at all on the other.  Please see the attached picture.  It is located at the left side of the engine bay coming out of what would appear to be an air duct of some sort, but I am not too sure.  I cannot find any place obvious for this to plug into.  Can you happen to tell what this is for, and if it should be inserted somewhere?  Thanks in advance.


993 SAI issues after top end rebuild

I have read the advise re SAI. Most seems to be in the 04/05 time frame. I recently, March of 15, test drove a 993 C2S with 79,000 miles. It presented well but it had no service history for the past ten years, had covered less than 10,000 miles in that period with only 300 miles in the last two years as it was unregistered. Almost immmediatly the check engine light came on and remained on for the one hour test drive during which the car performed well.

aftermarket sport exhaust is too loud for me

I bought my car with an aftermarket exhaust on it. At the time, the "grumble" was nice, but it's now to the point where it's become too much in my older age, not to mention it was never close to the true "porcshe sound".

I'm wondering if it's possible to inexpensively silence the sound without replacing any of the exhaust system?

If not, where can I go to trade my exhaust system for a stock system? 

3.6L missfire

I have a 1995 3.6L motor in a dedicated track car.  The last time I had the car on the track it was running great until I was near the end of the session.  I was at about 6000 RPM, full throttle, when the motor reacted like I had hit the rev limiter.  I immediately lifted off the accelerator but the car felt like it was running on 4 cylinders.  There was no smoke coming out the back and my temperature was good but my oil pressure gauge was at the max.  I limped the car back to the paddock and as I came to a stop the engine which was still running very rough, stalled.  There was a Porsche me

1995 993 Oil loss after engine rebuild

I have owned this car for the last 10 years and put on about 5,000 miles a year to and from work (no racing).  This year, I had the engine rebuilt due to oil consumption being about 1 quart every 800-1000 miles.   During the rebuild, the mechanic gave me the option of doing the bottom end also, which I decided to go for since I plan to hold the car long term and did not want to have to worry about any problems in the future.  As it turned out, there were no issues with the bottom end.  The total cost of the rebuild was about $16,000.

Several questions by a new 993 owner


I have a few questions about my 1996 993 C4 with 99K miles:

a) The previous owner says he was using Mobil 1 10W-40.  I looked on their web site and they

recommend 0W-40.

But, what about this new oil that Porsche has announced for the older cars. Should I use that?

It is 10W-60.

Theirs is What would you advise?

b) the top end was done just before I got the car to fix the check-engine problem.  What can I do,

if anything, to keep the passages clean so this won't happen again?

I have a small leak in the cam covers. What should I consider?

I have a small oil leak in my low mileage 1995 993.  I have already replace the valve cover gaskets.  New leak is at the cam / chain covers.  Dealer indicated that it would require dropping the engine. I read that I do not need to do this.  If I decide to drop the engine could you please detail for me the other things that I should consider.

Dropping engine to fix leak at chain covers. What else should I consider doing? The car has only 40K miles on it and it is use on the street only.

My car has dveloped a leak at the chain covers.  I have been told that I will need to drop the engine to fix.  If so what else should I consider doing?  I had the car tuned up at 30K.  The car runs and drives fine.  Consdiering new shocks and springs.  Any recommendations.  Also the clutch.


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