Bog above 3/4 throttle.
- Thread starter sks rider
- Start date
S
sks rider
Member
As long as you "gift" it back to me after you get it running.give sled to me as a present
S
sks rider
Member
I think the shipping cost would be ridiculous though. haha
Yah, you would pretty much have to be heading over to ride and bring it and leave it to make it worth while.
M
miller tools
Well-known member
bog
Bad Coil, my brothers coil on his 900 was going out it would bog on the top and idle funny.
Bad Coil, my brothers coil on his 900 was going out it would bog on the top and idle funny.
S
sks rider
Member
Theres no way to test them right? How do i know which one? lol
M
miller tools
Well-known member
COIL
You can try a inline spark tester some times you can find it that way also spray water on the coils some times they short to the out side of the bracket
You can try a inline spark tester some times you can find it that way also spray water on the coils some times they short to the out side of the bracket
D
Danbot
Well-known member
I can't see that happening. When did the idle start being so high?
High / unstable idle and backfiring screams air leak to me.
I remember a time when my throttle bodies had popped out of the intake boots (big air leak) and it was doing the same.... idling at 2500-3000, and backfiring
S
sks rider
Member
It started being high well after the bogging started.. But it seemed to get worse after i adjusted the tps.. The tps is dead on... I suppose it could be the harness. But im not really sure.
I checked my intake boots and theyre fine. It screams air leak to me too. But i simply cant find one.
Im really lost here and running out of time for riding this season.
D
Danbot
Well-known member
Whats your methods you have used to check for air leaks so far?
I usually leak down test any of my 2smokers after a rebuild or assembly, it's in my opinion, the best way to really know your engine is sealed. Most leaks are found very quickly this way.
Of course this only covers the parts up to the plugs you use (a plug in the exhaust manifold, and a slug clamped in the intake boot is typical). This doesn't cover your boost box, the boost box's seal on to the throttle bodies, and the throttle bodies seal into the intake boots which also all need to be properly sealed.
Unless you set the tps incorrectly somehow, I still think this sounds like an air leak. but even if the tps was done wrong, and the throttle plates were open too far at idle... I would expect the problem to be consistent.
That said, with these 900's I have found that until you have a perfectly operating and set tps with good idle behavior... all sorts of other problems can plague you (your 3/4 throttle bog that was the original topic).
If it were mine, I would start by re-setting the tps making triple sure its right, and doing a leak down test... and go from there.
I usually leak down test any of my 2smokers after a rebuild or assembly, it's in my opinion, the best way to really know your engine is sealed. Most leaks are found very quickly this way.
Of course this only covers the parts up to the plugs you use (a plug in the exhaust manifold, and a slug clamped in the intake boot is typical). This doesn't cover your boost box, the boost box's seal on to the throttle bodies, and the throttle bodies seal into the intake boots which also all need to be properly sealed.
Unless you set the tps incorrectly somehow, I still think this sounds like an air leak. but even if the tps was done wrong, and the throttle plates were open too far at idle... I would expect the problem to be consistent.
That said, with these 900's I have found that until you have a perfectly operating and set tps with good idle behavior... all sorts of other problems can plague you (your 3/4 throttle bog that was the original topic).
If it were mine, I would start by re-setting the tps making triple sure its right, and doing a leak down test... and go from there.
S
sks rider
Member
I honestly dont have as much experience doing this stuff as most of you all here on the forums. This season ive learned alot!
i havent done a leak down test.... Ive really only done a visual... Since, like i said, i dont have much experience doing this.
So what SHOULD i be doing?
Re setting the tps and then doing a leak down test like you said?
Check your Harness
Let me tell you something. I have a 2006 Polaris 700 (755) Rmk, 159 length track. I was experiencing bog down when i applied throttle. I suggest to those who are experiencing problems with thier sleds, to look at thier TPS and TPS harness that connects to the throttle bodies. I recently had my TPS adjusted however two hours into my ride i experienced a bog down when i applied the throttle. The sled was running crappy as i believe the sled was dumping large amounts of fuel into the cyliders to protect the engine when there is a problem. I took the sled into the dealer and they found out that the harness that connect to the throttle body was bad. I suggest those of whom are having problems to check out this problem either by themselves or by the dealer. Since i have had this TPS harness replaced, the sled had been running great.
Let me tell you something. I have a 2006 Polaris 700 (755) Rmk, 159 length track. I was experiencing bog down when i applied throttle. I suggest to those who are experiencing problems with thier sleds, to look at thier TPS and TPS harness that connects to the throttle bodies. I recently had my TPS adjusted however two hours into my ride i experienced a bog down when i applied the throttle. The sled was running crappy as i believe the sled was dumping large amounts of fuel into the cyliders to protect the engine when there is a problem. I took the sled into the dealer and they found out that the harness that connect to the throttle body was bad. I suggest those of whom are having problems to check out this problem either by themselves or by the dealer. Since i have had this TPS harness replaced, the sled had been running great.
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