I just installed a BMP +2mm big bore, BMP cam, BMP full exhaust and a PCV in my 2009 800. I can hit the rev limiter in park and neutral. But I can’t get the rpm’s past 5150 in high. I’ve got an EPI clutch kit with 66g weights, a Dalton adjustable kit comes with 67g weights as well as the stock weights. I’ve got all the different springs that come with the kits as well. No matter what combination of springs and weights I can’t hit the rev limiter in high or in low when I gear. I’ve checked the clutch alignment and it’s good as well, I had thought maybe it was riding out of alignment and that was causing the problem.
So…….anybody have any ideas of what else I can try. I need it working by Thursday night. Headed out muddin.
Well I dusted my engine đ Did a service about 250 miles ago since then I’ve been to Moab, UT for 5 days and Richfield, UT for 10. A week ago I took it to Manti, UT and first 10 minutes out, going up the canyon @ ~35mph I lost power. It returned immediately after but with a noticeable *clink* when I was on the throttle. Went about another 20 yards and lost power again. I pulled over and checked the belt it was fine. I checked the oil.. NO OIL! this was weird considering there was no sign of a leak anywhere and I didn’t notice the rig smoking at all. Temps were fine as well.
Dug into the motor this weekend and the exhaust side valve guides are surely out of spec (I’ll confirm tomorrow when my hole gage comes in). There was obviously sand sucked in as there was quite a bit on the piston heads.
I finally got down to the crank today and the PTO side Rod connector bearing is completely trashed. Rod is also scorched..
Well I dusted my engine đ Did a service about 250 miles ago since then I’ve been to Moab, UT for 5 days and Richfield, UT for 10. A week ago I took it to Manti, UT and first 10 minutes out, going up the canyon @ ~35mph I lost power. It returned immediately after but with a noticeable *clink* when I was on the throttle. Went about another 20 yards and lost power again. I pulled over and checked the belt it was fine. I checked the oil.. NO OIL! this was weird considering there was no sign of a leak anywhere and I didn’t notice the rig smoking at all. Temps were fine as well.
Dug into the motor this weekend and the exhaust side valve guides are surely out of spec (I’ll confirm tomorrow when my hole gage comes in). There was obviously sand sucked in as there was quite a bit on the piston heads.
I finally got down to the crank today and the PTO side Rod connector bearing is completely trashed. Rod is also scorched..
hey guys ,
new to the forum bought a 12 900xp 2 months ago.. and it currently has 1300 miles on it bone stock and unfortunately the tranny blew a hole in the case this weekend will riding on a trail… iv read quiet of few people are having this problem… polaris never offered me the extended warranty when i bought it so now i don’t know if they will help pay for this common problem. do any of you have experience with this problem and what has the dealerships done????
need some feedback please
hey guys ,
new to the forum bought a 12 900xp 2 months ago.. and it currently has 1300 miles on it bone stock and unfortunately the tranny blew a hole in the case this weekend will riding on a trail… iv read quiet of few people are having this problem… polaris never offered me the extended warranty when i bought it so now i don’t know if they will help pay for this common problem. do any of you have experience with this problem and what has the dealerships done????
need some feedback please
2012 RZR 4 800
I noticed yesterday that i have a vibration after 80 kph and not too sure what it is , anyone have any suggestions as to what it could be, first time it has ever happened
2012 RZR 4 800
I noticed yesterday that i have a vibration after 80 kph and not too sure what it is , anyone have any suggestions as to what it could be, first time it has ever happened
having some problems with a new-to-me 2012 rzr4/800 w/ 3400miles on it.
took it out for the first time on a long day, like 60 miles mostly easy stuff roads/mild rock trails, a few creek crossing.
first thing i noticed was that it didn’t have the top end my neighbor’s bone stock rzr4/800 has, on flat roads WOT, it was barely getting to 50mph where his easily cruises at 55-65mph. i do have different tires, but i don’t think they’re bigger or any beefier tread wise. it just felt bogged down and low on power (has new air filter and newer belt, so i thought maybe fuel, plug, or clutch probs)
anyway so yesterday i took it out to run a quick errand and to make a proper top speed attempt so i could report back to here and see if it’s really that bad. after backing out of the driveway it was a little stubborn getting into R after putting it in P to close my garage door, and once it was in gear it was a little noisey, but nothing scary sounding.
then not far from home i decide to pull over to get my goggles from the glove box and while sitting still i bumped the gear shift lever in to R on accident. it moved like a foot before i hit the brakes, but after that i was screwed. couldn’t get it to stay in a gear and when i finally did, the rzr wouldn’t move. so i towed it back home and today i popped off the clutch cover to check out the belt/clutches. on visual inspection it looks ok, belt isn’t worn on the sides and when i started it up and gave it some gas while in R both clutches would spin but the rzr wouldn’t budge.
at this point i’m thinking pinion shaft snapped, any other theories? or are there any other test i can do to verify or disprove the pinion shaft scenario?
I need to pick the collective forumâs brain on an issue I am having with my 2012 rzr 800. There are a number of knowledge people as part of this community so hoping someone may be able to point me in the right direction. Story/symptoms are as follows:
⢠During hunting season Nov 2014, I used the rzr to set stands all day on a Friday. Ran fine.
⢠Parked it Friday night.
⢠Got in Saturday morning to go hunt and it would start up and idle. Give it gas it died. Tried this several times and no luck. Pulled the air filter off. Tried running without air filter to see what would happen. No difference. Donât believe there is a vane sensor on the 2012, but tried mashing the gas before starting, etc. to see if that would work. No success. Rzr stopped starting all together and would just turn over after several attempts. Cussed extensively and pushed it into the trailerâŚ.went hunting. Didnât get anything for the 2014 deer season, cussed some more.
⢠April 2015, weather warms up enough to work on the rzr. Got it out of the trailer.
⢠Read forums and thought maybe the problem was a crank positioning sensor. Bought one and replaced. No difference. Wouldnât start.
⢠Ohmed out several connections (CPS, TPS, MAP, etc.) all seem to check out ok.
⢠Checked fuel pressure at the rail, meets service manual specs. So doesnât seem like it is the fuel pump issue I have read about several times on the forum.
⢠For the heck of it, checked compression on both cylindersâŚ. 60 psi on one, 85 on the other!!!
⢠Pulled off the jug. Rings are seized in the pistons. No noticeable significant scoring on cylinders. Engine is stock.
⢠Replaced pistons and rings, reassembled. Started up.
⢠Rolled out of garage to take around the block to let rings seat inâŚ.got to end of the driveway. Rzr dies.
⢠Try restarting. Will idle, but give it gas it dies.
⢠Pull it back into the garage and read some more on the forums. Since the rings were seized in the piston it seems to indicate there is an oil problem? Dip stick indicates oil level is fine.
⢠Read about issues with oil pressure relief valve on the RZR 800 engine, so checked that.
⢠The dowel appears to be stuck. Wonât come out after several different attempts (aerokril, pen magnetic, etc).. So this would seem to mean it is stuck in a high oil pressure mode?
⢠I buy an oil pressure gauge and sending unit. Change oil and filter. Install pressure gauge and try starting the rzr. Rzr starts idles, oil pressure builds and gauge pegs at 100 psi, then rzr dies.
So, it appears I have a few things now to try and fix/figure out.
A) Oil pressure relief value stickingâŚ. Any good suggestions on how to get it out (without pulling the engine preferably)? I already bought a new dowel once I get it out. Also considering buying the Holz adjustable valve I have read about on here. So that will help in the future….but not fix the current situation.
B) Why would the rings have seized in the piston? I am concerned about trying to start the engine too many times now to troubleshoot incase the rings seize again.
C) Any suggestions as to why it would start, idle and then die? It currently dies even if you do not give it gas.
