jmforjeda

excuse for my eanglish because i am from Barcelona, so i thing i have a leak on one piston of my 993.
it's possible to repare it without remove de engine?
anybody had the same problem?
any DIY to do it?
i sow the DIY to remove the engine, but i want and other to repare the piston, have anybady one?
thanks in advance

JPP

Hard to say with conclusion, but it appears to be a head gasket failure which is fairly common, more so on MY '97/98 and many problems associated with weak factory head studs that stretched IIRC. There's a factory TSB on it around here somewhere ....
I believe you will have to pull the motor out and replace the gasket .. and depending on the condition/mileage on the motor, at that point, you might as well do a top end reubuild ... valve guides (known problem) and valves .. rings .. etc. I'm sure some others will chime in here that know more than me about these circumstances.

jmforjeda

thanks, some people said me the same but y need a DIY or something where explain the repair with detail, i found a DIY at this forum but is only about the engine removal, so i want one with the repair

NineMeister

I have never seen a 993 cylinder fail without reason, hence I think you might have an oil leak from one of the crankcase through bolts rather than the cylinder itself. This requires the engine removed and a top end rebuild to repair.

Let me know if you need help, I could do with a relaxing week in Barcelona......

JPP

^^^ There you go ... very nice offer from a top engine builder! :-D

jmforjeda

if you are talking sirious we can talk about it in private.
we will work on the car very hard for one week, and after of that you'll have one holyday week or more at Barcelona because i have a guest room at my home

but i don't know for sure that there is cylinder or piston fail, it is what a mechanic friend of main sed, but he is not a porsche specialist

NP993

Clean the oil off the engine, then take it for a short drive, then inspect it. At that point you should be able to see where exactly the oil is coming from.

jmforjeda

yes, thanks i know it, but the leak is very clear on that picture.

jmforjeda

any DIY explaining how to do an egine rebuild?
thanks in advance

P906

Hello,

if you like to get closer to this Problem, you need to pull the engine....

Chris/Vienna

PNogC2S

To answer your question about the engine rebuild DIY, here is a link:
http://pcarworkshop.com
There is a section in there on an engine rebuild.

race911

Not really. That there is oil accumulating in that spot is clear. And that's about all.

Unfortunately, this is likely where things are heading if you want a thorough diagnosis. In the old days of a carburetted, or even an mechanical injection, engine, you could pull the intake and fan shroud for further inspection. But that took you as long as pulling the engine, so what was the point.