Backfiring and bad idle after rebuild

[wagnerta]

Hey guys,
Let me start with my sled and some info.
2013 Polaris RMK Pro 800
Just did a top end rebuild with:
Wiseco Pistons, rings, pins, and bearings
"Durability" spacer
V-Force3 reeds
all new gaskets
new plugs
new ignition wires and boots
tps adjustment

And i have A LOT of backfiring on startup and while idling. I had to adjust the throttle to keep the idle up because it has a very low idle. I originally thought it was flooded because i actually had this issue before so i took the cylinders off again to check ring gap again, all good, and saw a lot of fuel and oil in the y-pipe.

Does anyone have a clue whats going on?! I feel that I've tried everything

 

[Sheetmetalfab]

Hey guys,
Let me start with my sled and some info.
2013 Polaris RMK Pro 800
Just did a top end rebuild with:
Wiseco Pistons, rings, pins, and bearings
"Durability" spacer
V-Force3 reeds
all new gaskets
new plugs
new ignition wires and boots
tps adjustment

And i have A LOT of backfiring on startup and while idling. I had to adjust the throttle to keep the idle up because it has a very low idle. I originally thought it was flooded because i actually had this issue before so i took the cylinders off again to check ring gap again, all good, and saw a lot of fuel and oil in the y-pipe.

Does anyone have a clue whats going on?! I feel that I've tried everything

Go back to stock reeds.
Vforce never would idle in my pro.

 

[zilla]

But besides initial start up and low idle it ran/runs fine ?
Of course sounds like an air leak, the Vs still a plastic assembly you snap together ?
Did the top end as maintenance or after a burn down ?

 

[zilla]

What was compression before rebuild and what is it now ?

 

[wagnerta]

But besides initial start up and low idle it ran/runs fine ?
Of course sounds like an air leak, the Vs still a plastic assembly you snap together ?
Did the top end as maintenance or after a burn down ?

no it doesnt run decent at all. and it was a preventative maintenance rebuild

 

[greasemonkey3406]

Go back to stock reeds.
Vforce never would idle in my pro.

X2 on this one. I rebuild my buddies switchback assault last year with the rk tek head and pistons and it wouldn't even run with the v force reeds in it. Swapped them back to the stock ones and it ran fine.

 

[ak]

The Polaris runs just fine with the v force 3 reeds. (Durability not very good)

It's the v force 3r reeds that run rich on the bottom end there a stiffer reed. ( better durability)

 

[dexter]

Are you sure that you set your tps properly