96xp hard starting backfires wont run in water

[azsxr]

Hi I have a 96 xp That I rebuilt and now it wont run right. It's hard to start I have to choke the hell out of it and it will backfire through the carbs I let off the starter hit it again and starts. It wont start in the water at all. I've been throught the carbs checked the rv timing many times checked the wodruff key. Ran the fuel line straight to the carbs I'm at a loss for ideas?

 

[mikidymac]

Check the rotary valve clearance.
Sounds like a rotary issue to me.

 

[azsxr]

I did and it's in spec I'm going to get someone with fresh eye's to check the rv timing. I'm beginning to doubt my skills

 

[XP 787]

Definitely sounds like a rotary valve issue to me. Either timed incorrectly or excessive clearance. What is the compression?

 

[azsxr]

When checking the rv Clearance is it with or without the valve in?

 

[XP 787]

Yes with valve in but oring removed

 

[azsxr]

That's what I thought
I have .012-.013
That's almost perfect right?
The valve it self is at 62-63 closing 65 being spec.

 

[azsxr]

Compression is 147-150 on fresh pistons and rings

 

[Bills86e]

Are the Raves stuck open? How fresh is the gas?

 

[azsxr]

Gas is fresh and the raves are moving up and down.
Would grinding too much off the raves do this? I think the guy l had do got too happy and took to much off.

 

[azsxr]

Gas is fresh and the raves are moving up and down.
Would grinding too much off the raves do this? I think the guy l had do got too happy and took to much off.

 

[Matt Braley]

I hope the pistons are not in backwards.

 

[azsxr]

Matt you just nailed it god dam it.
Can I just turn them around and be good ?Ive had the engine out twice checking for air leaks and pounding my head against the wall. At least I know I was considering a priest or Viking furnal.

 

[Matt Braley]

Yes if the rings have not snagged on the ports yet you can just turn them around.

 

[azsxr]

Anyone know where I can get some new circlips for some pro x 83.5 mm pistons?

 

[azsxr]

I got some new rings and c clips
A quick hone new gaskets and she runs like a dream. About done
With break in.

 

[mikidymac]

So glad to hear you got it figured out and are in the water. Enjoy:thumbsup:

 

[azsxr]

Thanks again