Thread: 1200 Middle Piston Seized!
05-10-2009, 10:32 PM #1
- Join Date
- May 2009
1200 Middle Piston Seized!
Hi & first post.
Anybody here with experience of a middle piston seizure on their PWC?
It happened to mine, was replaced, carby kits fitted, mixture made richer plus additional oil, then before it got to 10 hours, middle piston seized again - only this time putting a rod thru the block!
Any info would be helpful.
BTW the mechanic who did the original 1 piston rebuild did not pressure test the crankcase.
05-10-2009, 11:35 PM #2
Welcome to GH....pics will be nice.
05-10-2009, 11:41 PM #3
- Join Date
- Jan 2007
Sorry to hear about the crank and crankcase man, that sucks.
05-11-2009, 10:49 AM #4
Typically you're going to get piston seizure from one of two things: 1) lack of sufficient fuel; or 2) lack of sufficient oil.
You're going to have to find out which one caused this.
05-11-2009, 10:50 AM #5
yea, pics would help a ton.
Also, how much "additional oil" did you ad?
05-11-2009, 02:27 PM #6
#2 seizing probably because of an air leak
05-11-2009, 02:30 PM #7
05-11-2009, 02:44 PM #8
It could easy be an air leak but you cant test that now.
It could easily be a bad crank like hydro said too.
You need new cases or a repair you need a new crank and at least 1 pison and rings.
Cylinder could go either way.
Your carbs need to be gone through and rebuilt if needed then properly set up for your motor.
Pics would help a lot
05-11-2009, 04:08 PM #9
Pressure test before you take it apart.
05-11-2009, 09:32 PM #10
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