850 etec won't idle popping and backfiring at low rpm

[turboetech]

Hard to start idles at 850-900 rpm no p codes only starts and runs with throttle at 1/4 pressed pops and back fires at low rpm any ideas??

 

[turboetech]

The sled will run fine once accelerating but won't idle and smokes bad at 900rpm and often stalls

 

[mountainsledmania]

Jesus your not having any luck buddy

 

[turboetech]

This one is my buddies 850 we are In Valemount sleddin

 

[turboetech]

It has 1100 kms ran fine til today seems like it idles on one cylinder but when he pins it the sled will clean up and run fine hard to start idles crappy and often stalls smokes and pops and backfires if you blip throttle but cleans up at wot..... so today we did a lot of high speed riding in open areas

 

[mountainsledmania]

codes?

 

[fredw]

Just had this happen to our 18- 850 as well, sled has three hundred km on it.. Pretty sure it's a stuck ring with ours.. Dropped of last night at dealer and will keep you informed

happen at lower elevation after a decent warm up and short acceration.. In -14c weather

i was almost ready to install turbo but had thought one more ride.. Motor was totally stock with stock exhaust, just a royal piss off

seiral number needed in 045

 

[turboetech]

Buddies sled shows no p codes what a piss off trying new plugs this morning.....day one of 4 day trip

 

[Caper11]

I heard of cracked spark plugs on these. Try changing them??

 

[52weekbreak]

Check the reeds

 

[fredw]

And good luck trying to replace plugs in that pig.. We tried to remove and do a simple compression test, not so simple on a G4, with that big ass airbox you don't have no room, finnally took the big hood off, removed a bar that runs threw air box, then Jamed box back enough to to get in, removed plugs to find out they are now a smaller diameter plug and we needed a special compression tester with small plug end..

We had no codes come out on can doo, the love of this new sled is running out quick, another brp flop comes to mind

 

[bjd68]

I heard of cracked spark plugs on these. Try changing them??

Yup mine had a cracked spark plug at 1100 kms!

 

[fredw]

Just found out pto piston melted, less than two hundred miles, product defect or bad tune from brp.. o my, hope this is a Problem child

 

[Director]

Spark plugs, rave valves or reeds would - would be the usuals but if it runs fine at higher RPM wouldn't think the plugs or reeds would work better with RPM.. Maybe try to check the solenoid by the oil reservoir that controls the rave valves to see if cable is sticking a little bit open and not building enough compression at low RPM, fart and sputter till it cleans up. Not sure..

 

[Director]

Just found out pto piston melted, less than two hundred miles, product defect or bad tune from brp.. o my, hope this is a Problem child

Good thing the turbo wasn't on yet... Bonus once you install the Silber turbo kit is the airbox is quite a bit smaller and makes it easy to get the plugs in and out..

 

[TPOWER]

Buddies sled shows no p codes what a piss off trying new plugs this morning.....day one of 4 day trip

If you need a warm shop to work on it , you can use the Summit River Sledshed , just throw a donation in the box when your done is all I ask .

 

[mountainsledmania]

If you need a warm shop to work on it , you can use the Summit River Sledshed , just throw a donation in the box when your done is all I ask .

BIG thumbs up for this guy^^^^ that's a stand up gesture.

 

[turboetech]

Thanks for the offer Terry much appreciated buddy rode it today all day with same problem sputtering and popping at low Rpm but runs well at wot but stalled a lot today guess he has a dealer in Edmonton he called and is takin too on Tuesday picked up a set of plugs late tonight from vinny at NAPA whiskey lid fell off tonite and he drowned his sorrows will change in morning.... ya we need a 12 yr old Japanese girl with tiny hands to change these new plugs and yes different than the old 800 etec plugs too

 

[firstdoo]

Thanks for the offer Terry much appreciated buddy rode it today all day with same problem sputtering and popping at low Rpm but runs well at wot but stalled a lot today guess he has a dealer in Edmonton he called and is takin too on Tuesday picked up a set of plugs late tonight from vinny at NAPA whiskey lid fell off tonite and he drowned his sorrows will change in morning.... ya we need a 12 yr old Japanese girl with tiny hands to change these new plugs and yes different than the old 800 etec plugs too

Dont forget to index the plugs when installing them.

 

[skegpro]

Dont forget to index the plugs when installing them.

Is there a video or a procedure for that I have never had to change a plug on a etec.

Is there a indicator on the block so you know which way to point the electrode gap?

Are cat and polaris the same?