 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Porsche / Porshe 911 / February 2004911 SC sitting to long
My `82 SC has been sitting in the barn for too long and I suspect that the pistons may have become 'stuck' in the barrels. The symptom is that the starter motor engages, but it just seems to draw excessive current and stalls . I know that this doesn't sound good at all, and I need to get the piston(s) unstuck before I do anything else. I guess that the first thing is to remove the spark plugs and spray oil into the cylinders and let it sit for a while before I try to turn the cranshaft over. Would something like WD40 be ok, or should I use something else? Neil Plain motor oil will be okay, or you can spray penetrating oil into the spark plug holes. WD40 isn't really a penetrating oil, it just good for displacing water not rust, Let the oil sit and see if you can turn it by hand and not the starter. If the rings are rusted to the cylinders or to the pistons you can crack the rings if you try to force the engine to turn over. > My `82 SC has been sitting in the barn for too long and I suspect that the > pistons may have [quoted text clipped - 10 lines] > > Neil Neil, Have you tried putting a socket & ratchet or breaker bar on the crankshaft end and see if you can turn the engine by hand? It shouldn't take a lot of force. That will tell you if it's really stuck or if you've got some other problem, like a weak battery or corroded connections. I assume you know if it was running OK before it got put away.  SignatureMark Hald '77 Carrera 3.0 http://members.rennlist.com/hald > My `82 SC has been sitting in the barn for too long and I suspect that the > pistons may have [quoted text clipped - 10 lines] > > Neil Mark, Yes, it was running fine. I did wonder if there wasn't a corrosion problem somewhere in the starter motor circuit. When the key is turned, the starter motor engages and then seems to stall (the interior light dims to nothing) and since the car has been sitting there for about a year (I had been away much longer than I anticipated) I assumed the worst. I'll try a socket/spanner on the crackshaft as you suggest just to see. Thanks for your comments. Neil > Neil, > [quoted text clipped - 25 lines] > > > > Neil Not likely that freeing the pistons will do damage to the rings. First remove the spark plugs, then put a squirt of oil in each cylinder, then put the car in gear, start with second gear, and gently rock the car back and forth. After a short period it should break loose. Then you can do the starter bit. Make sure there is no leaves, straw or other junk can get into the spark plugs holes. then remove the breather, put fresh fuel in the car, raise the little black weight with the key on, to purge the system, put fresh plugs back in and let her rip. I have seen aircraft engines sitting for 25 years fire up and fly away the same day. Change the oil. Once you get her running change the oil again after 200 miles or so. good luck. > Mark, > Yes, it was running fine. I did wonder if there wasn't a corrosion problem OK, so I removed the plugs and rocked the car in gear and the engine does not appear to be stuck at all - as there was no initial resistance to crankshaft rotation. The same problem still exists when I turn the key, so I'll check the various electrical connections and try another battery. Thanks for your comments. Neil > Neil, > [quoted text clipped - 25 lines] > > > > Neil Just a point...make sure to check all the ground (earthing) connections. Good luck. john 83SC > OK, so I removed the plugs and rocked the car in gear and the engine does > not appear to [quoted text clipped - 37 lines] > > > > > > Neil OK, I traced the problem to a corroded earth strap between the battery and the chassis. It looked OK, but was heavily corroded under some sheilding. Fitted a new earth strap and the engine started almost immediately. Thanks for your help and comments. Neil > OK, so I removed the plugs and rocked the car in gear and the engine does > not appear to [quoted text clipped - 37 lines] > > > > > > Neil |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.