10-15-2006, 03:01 PM #1
Found the GREMLIN! pics......................
After the 06' blew up,it has never ran quit right.Pulled the pipe,reeds out and the reeds look good.WTF!....Next step was to pull the heads,starting with #3.You know,that bad,bad #3 that haunts us all. Heres what i saw...Ive been taking in water.That explains why its been sputtering and my rpms are down.
10-15-2006, 03:03 PM #2
Maybe the head warped when it leaned out and blew.Dont know yet.Clyinder doesnt looked cracked and compression is good. What do ya think.
10-15-2006, 03:25 PM #3
probably a cracked head or jug (so small that you can't see where the water is coming from, but crack opens up under enormous pressure when running).
Just a thought.
10-15-2006, 03:26 PM #4
maybe even a base gasket failure??
10-15-2006, 03:31 PM #5
Make sure you have the base gasket and head gasket on that
cylinder turned correctly.
10-15-2006, 03:45 PM #6
Im sure the gaskets are on correctly.Even though its a brand new cylinder,doesnt mean its not cracked.No signs of it leaking between the head and gasket but , between then cylinder and head gasket,it looks as if water was coming in between them.Im going to clean the piston and cylinder wall,just wipe everything down,then put a new head gasket in and run it.There is a tab that sticks out of the base gasket,which goes toward the exhaust manifold and towards the front of the boat.Left front corner if your sitting on the boat.That can only go on one way.I will check the torque of the cylinder though.
10-15-2006, 04:19 PM #7
Put a straight edge along the tops of the cylinders with the cylinders all bolted to the cases and make sure it is flat.
Oh, nevermind you have 3 piece heads
Lowell told me there is a lot of variation in the cylinders.
I would be suspicious of the head.
Last edited by spud; 10-15-2006 at 04:24 PM.
10-15-2006, 06:06 PM #8
Checked the cylinder and head.Everything 'looks' good.Ran a straight edge,all checks out A-OK.Just put a new head gasket in and got the boat put back together.I will test it this weekend and see. No sence running it on a hose because there is not enough pressure in the system.If it does it again,its probably a cylinder crack OR the head might be a little warped.When the EFI ground came off,the boat ran lean and may have warped it some.
Heres a test i did:
I took a clean plastic water bottle and dried it out with my compressor.Then i poured some of my gas/oil mix into the bottle.I then added 1/2 the amount of water to it.I shook it up for about a minute and it gave me the same color and texture that was on the cylinder and head. Obviously,it was water injestion but i was screwing around and thought i would see what happened.....LOL......
Well,back to the water Saturday.
10-15-2006, 06:49 PM #9
Hey Woody, I had a customers ski with the same problem and what i found after i pressure tested it. Is the head had a small hair line crack on the bottom of the squish band at the 7 oclock position and by looking at your picture, Look at the 7 oclock position on your head it looks like you have a small hair line crack at the same spot you might want to check that.
Last edited by JIM'S PERFORMANCE; 10-15-2006 at 06:58 PM.
10-15-2006, 07:02 PM #10
Kerry mentioned something about a base gasket possibly being on backwards. This probably doesn't apply to your situation.
R/D heads are notorious for warping.
If you take the plastic cover off the driveshaft, it throws water into the #3 cylinder.
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