Compression Test 130 , 125 ,,130 ,115 , OK or Not

[red]

Last night I thought I would see how dirty the Oil real was so I took the Oil Filler Cap off and used a large screw Driver as a Dip Stick , Surprise  Surprise , when I pulled the Screw driver out it was covered in Fuel ,with a small amount of Oil mixed with it ,About 80% Fuel 20% Oil , So I ended up draining  out 4.5 litres  of the Fuel / Oil mix out of the Motor  ,,
So it looks to me like the past owner had the  Float Needle stuck open and this flooded the Motor with Fuel ,  A  Big THANK YOU to every one for your in-put ,,
regards Phil from Aussie

Phil,

Bad news.  Good catch.  I hope the engine did not run long with fuel in the oil.
The needle-and-seat assemblies should prevent that fuel leakage into the crankcase, sure, but the fuel pump should do that, also.  Your fuel pump may have a problem, if it does not shut off the fuel flow.  I would expect that RPM has a fuel pump for you.
Best wishes.

[wainot-Phil]

Last night I thought I would see how dirty the Oil real was so I took the Oil Filler Cap off and used a large screw Driver as a Dip Stick , Surprise  Surprise , when I pulled the Screw driver out it was covered in Fuel ,with a small amount of Oil mixed with it ,About 80% Fuel 20% Oil , So I ended up draining  out 4.5 litres  of the Fuel / Oil mix out of the Motor  ,,
So it looks to me like the past owner had the  Float Needle stuck open and this flooded the Motor with Fuel ,  A  Big THANK YOU to every one for your in-put ,,
regards Phil from Aussie

Phil,

Bad news.  Good catch.  I hope the engine did not run long with fuel in the oil.
The needle-and-seat assemblies should prevent that fuel leakage into the crankcase, sure, but the fuel pump should do that, also.  Your fuel pump may have a problem, if it does not shut off the fuel flow.  I would expect that RPM has a fuel pump for you.

Hi Red ,
The Motor is a stand alone motor , It is not in a Bike and I do not have the Bike it was in. I just bought the Motor only ,so I have no real idea how the Fuel got into the Sump , I think the Motor should be good , because the Compression readings  are really good now all around the 135 psi mark  ,cheers Phil

[Troyskie]

Nice one Phil!

Like Red said, fingers crossed the bike wasn't run much in that condition.
I agree, I'd guess this will be a good motor.

If you end up with a spare 12 motor again, I know Alf is looking for one.

Troyskie

[wainot-Phil]

 Motor has been swapped over ,, ALL DONE  ,I removed old 1100 Motor last night and fitted the unknown condition  1200 Motor .The Bike is like a New one again  ,,it is going great , Power to burn and Smooth silk , very Quite and no smoke at all ,Happy Days ,,I Even took her for a run 30 klm   to the Servo and Back , Man I am really  liking how smooth and Powerful she is now , Best thing I have ever  done for the old Girl ,,

[fj1289]

Awesome!