KDX220 Splooge and other questions
Posted: 08:02 pm Sep 22 2007
I've read most all posts on this site about the splooge subject, jetting, RB work, pipes, etc. I could use some input on my bike.
'97 220
Eric Gore ported
Wiseco 1mm over
Rad valve w/carbon reeds
FMF Gnarly w/turbine core silencer
40:1 mixture - Redline
87 oct pump gas
Here's a bit of background.
I purchased this bike about 4yrs ago. From the first day I rode it it puked oil out the back like I couldn't believe ! I have played with mixture and jetting and still pukes oil out all over the fender, swingarm etc. It also sounds very strange, like the choke is on when you just open the throttle in neutral. You can hold it virtually wide open and it won't "clear" itself out. Does not have that bark like a two stroke should. Early on, I took the top end off and check powervalve installation and to this day believe it is correct.
So, over the years I've played with jetting and mixture to no avail. The bike screams on top but is boggy down low. Has erratic idle and at times will not idle even when the screw is in all the way.
I've even gone down to a 38 pilot and still would have idle trouble. I was thinking pilot was too rich at 42,40.
BTW, this bike has NEVER fouled a plug. Aside from the idle and splooge issues, the bike runs pretty well and has always been very reliable.
My questions are:
What effect does the porting have on some of the symptons I have. Specifically splooge.
Would the porting require jetting much different than what I read most of you are running.
How can I be down to a 38pj and still not get a decent idle. Seems like a rich idle condition.
I've read where KDX folks don't like the Rad Valve. Why.
I was told you cannot do a leak test on this bike because of the way the powervalves are. True?
Ok, a lot of questions, but this bike has stumped me for the past few yrs. Also, last year I bought a spare carb off Ebay. Both are identical with the exception of the carb top. My original top is black and has "coarse" threads on the screw on top. The Ebay carb top is the same color as the carb and has a "finer" thread pitch and will not screw on completely to either carb. Did someone swap the top off the Ebay carb? (can't seem to get pic to load)
I was thinking the bike has had a crank case leak all this time and have talked with Fredette about spliting the cases and putting in new seals. Also have new top end to put in but want to try to figure out thefe spooge and idle issues first.
Thanks,
Lee
'97 220
Eric Gore ported
Wiseco 1mm over
Rad valve w/carbon reeds
FMF Gnarly w/turbine core silencer
40:1 mixture - Redline
87 oct pump gas
Here's a bit of background.
I purchased this bike about 4yrs ago. From the first day I rode it it puked oil out the back like I couldn't believe ! I have played with mixture and jetting and still pukes oil out all over the fender, swingarm etc. It also sounds very strange, like the choke is on when you just open the throttle in neutral. You can hold it virtually wide open and it won't "clear" itself out. Does not have that bark like a two stroke should. Early on, I took the top end off and check powervalve installation and to this day believe it is correct.
So, over the years I've played with jetting and mixture to no avail. The bike screams on top but is boggy down low. Has erratic idle and at times will not idle even when the screw is in all the way.
I've even gone down to a 38 pilot and still would have idle trouble. I was thinking pilot was too rich at 42,40.
BTW, this bike has NEVER fouled a plug. Aside from the idle and splooge issues, the bike runs pretty well and has always been very reliable.
My questions are:
What effect does the porting have on some of the symptons I have. Specifically splooge.
Would the porting require jetting much different than what I read most of you are running.
How can I be down to a 38pj and still not get a decent idle. Seems like a rich idle condition.
I've read where KDX folks don't like the Rad Valve. Why.
I was told you cannot do a leak test on this bike because of the way the powervalves are. True?
Ok, a lot of questions, but this bike has stumped me for the past few yrs. Also, last year I bought a spare carb off Ebay. Both are identical with the exception of the carb top. My original top is black and has "coarse" threads on the screw on top. The Ebay carb top is the same color as the carb and has a "finer" thread pitch and will not screw on completely to either carb. Did someone swap the top off the Ebay carb? (can't seem to get pic to load)
I was thinking the bike has had a crank case leak all this time and have talked with Fredette about spliting the cases and putting in new seals. Also have new top end to put in but want to try to figure out thefe spooge and idle issues first.
Thanks,
Lee