Other Xl1200

[mjamesd013]

If anybody could help me that would be amazing. I have posted over at PWC but looking for a somewhat quick answer and there seems to be more action here. I have 2 2000 Yamaha XL1200's I am trying to sell. I am trying to figure out what each cylinder hole should be reading on the pressure test. What is acceptable and what is not?

Please and thank you

 

[extreemthrottle]

hey md,
compression on those motors should be even, and around 115-125 psi.
hope it helps

 

[mjamesd013]

well it is 120 on the front 2 and then 100 on the farthest one back. The buyer is saying he will need to do a rear cylinder rebuild on it and trying to drop the price drastically.

 

[SuperJETT]

That's far enough down that it probably is an issue and needs to be dealt with before it causes a major failure.

 

[mjamesd013]

alright I really appreciate the help

 

[Vumad]

I try to never buy a ski where the lowest and highest cylinder are more than 10psi apart. Something is wrong.

 

[Matt_E]

I try to never buy a ski where the lowest and highest cylinder are more than 10psi apart. Something is wrong.

Plenty of 2-stroke motors in couches have staggered compression by design.

 

[swannysxr]

not all gauges are created equal, try a different gauge. it might not actually be that low. How well does it run?

 

[Matt_E]

A faulty gauge would produce wrong numbers across the board. The OP is seeing differences between cylinders. I doubt a faulty gauge would do that.

 

[Polish jet pilot]

or the guy did a bad test on the rear to make you think you need a rebuild... seen it before