03 rx 1 major issues

[larter69]

Hey guys new to the site i have a 03 rx1 and i have a major bog around 6500rpm will not rev up, so i done the research about the tors and didnt fix the problem, check carbs cleaned 3 times , no difference,changed cdi box no difference,check all boots and there all good, compression 185psi accross the board, check the tops of the c arburators for pin holes no holes found, new plugs new oil , changed fuel pumps no difference, check fuel filters and replaced still no difference, no codes, all parts were off a running sled right beside mine, really puzzled hopfully i can get some help, jet size is 165 and 25 pilots, now i live in prince edward island canada, the jet size is the same as my buddies sled, also my muffler was opened before and cut but sled ran before without issues, cleaned thermostat sensor,

 

[APEX 06]

How old of gas.

 

[larter69]

it had 1 bar of left over fuel from last year and added 91 octain 20 liters.

 

[larter69]

it bogs right down at full throttle, it starts perfects and idels perfeect, ease of the throttle its ok to 40km then wot or even slightly half bogs right down. hold hands over each carburator and each carb chocked the motor out,

 

[Sled Dog]

Hey guys new to the site i have a 03 rx1 and i have a major bog around 6500rpm will not rev up, so i done the research about the tors and didnt fix the problem, check carbs cleaned 3 times , no difference,changed cdi box no difference,check all boots and there all good, compression 185psi accross the board, check the tops of the c arburators for pin holes no holes found, new plugs new oil , changed fuel pumps no difference, check fuel filters and replaced still no difference, no codes, all parts were off a running sled right beside mine, really puzzled hopfully i can get some help, jet size is 165 and 25 pilots, now i live in prince edward island canada, the jet size is the same as my buddies sled, also my muffler was opened before and cut but sled ran before without issues, cleaned thermostat sensor,

Welcome to the site. Have you read site rules? If you did you would have your location filled out in your profile.

 

[Ratpack]

Unless you have k&n filters, air box mod, or your altitude is -18,000' your jets are huge. Your main jets should be #135.

 

[larter69]

No filters and i beleive stock jets are 165 and 25 pilots , my friend came over last night and we swopped carbs and no luck, so jetting is not the issue

 

[Ratpack]

What is your elevation. Stock jets are 135.

 

[larter69]

Another thing i would like to point out airbox is currentley off, how ever we had my friends off in the garage and it still ran fine by reving engine up on a stand

 

[Ratpack]

Look at your clutches. How many miles on the sled? A dirty or worn out clutch can do the same thing.

 

[larter69]

im not 100 percent sure sea level,

 

[larter69]

30 000km on engine, clutches were taking apart and cleaned didnt see much issue with them , they are stock springs as well

 

[Ratpack]

Just reread your post. If the only thing that has changed is the exhaust,and now you are having problems,I would go back there. Compared to what you have done that is going to be easy to check. If you can find a different muffler to put on, try it. Maybe something is blocking the muffler inside.

 

[Sled Dog]

When test riding are you putting the air box back on? Your jets are way to huge for your elevation stock jetting is 135 mains and 17.5 pilots. The guy who sold you the sled must have had K&N filters on to jet that big. If your airbox is not on the sled will run like poop with it off ask me how I know.

 

[IBABAD1]

Swap clutches with your buddy's sled.