Quote:
Originally Posted by 911eers
Hello fellow pelicans,
I am new to the Pelican Parts world. I am looking to buy my first 911. I looked at an 82 911SC with 80,000 miles on it. I had a PPI done. The leak down test was as follows:
1- 40% @ 115PSI
2- 9% @150PSI
3- Could not get the Spark Plug out, so they did not test that one, they didn't want to risk any damage.
4- 10% @ 145PSI
5- 5% @ 150PSI
6- 10% @ 150PSI
I am kind of new to this. What do these numbers mean and how big of a deal is the 40% leak down? What would it take to fix it and about how much would it cost?
I appreciate all of your guys inputs
|
Mostly a +1 of Pete's post.
Given the storage duration were I the seller I would not have allowed a compression test absent first driving the car under HARD acceleration numerous times, at least twice starting with a COLD engine.
What was the state of the engine, COLD/HOT, for the testing? Pressure tests are meaningless COLD, plus, plug removal would require extra torque.
Determining the cause of the leakdown simply involves squirting a bit of motor oil into the spark plug opening, crank but no start the engine briefly. If there is now less/noral leakdown the piston rings are at fault.
How much is the owner asking?
Stuck plug is a bit of an enigma. Most shops would have gone ahead and removed the plug. UNLESS the effort required was judged to be REALLY extraordinary.....
Oh, broken plug might well have been the "wrenches" fault. Was is broken beforehand...? No real way to know.