Hi everyone, I'm posting this for a friend. he is having trouble posting, so I pasted his E-mail that he sent to me. I've done a few searches on this topic, so the homework is done. Anyone with similar experience would be of great help if they could share it. Chet is kinda p.o.ed right now, but I told him that 2 strokes sometimes foul plugs and I feel there is most likely a simple solution. Also, the dealer isn't gonna go too far out of their way generally. I stongly feel his fuel and oil choice and ratio will help a lot. I recommended amoco 93 and mx2t at 32:1. This combo worked wonders for my bike, which is REAL finicky. I realize they are different bikes, but still think it's worth a shot. Also going to a br7 might not hurt. Just a few thoughts. ok. here Are chet's words. I will send him a link to this post. Thanks in advance to any KDX folks who respond.
Chief
" I first started using Kawachem oil and 93 octane gas @ a mix of 3.5 ounces oil to the gallon of gas. I went through about 3 sparkplugs in about 2 weeks, fouling out oily, primarily in the first 50 yards from my home camp. The bike is still under warranty, whatever that means, so I contacted the dealer and he said try a smaller pilot jet and don't use the Kawachem oil we like to use Yamalube @ a 40:1 ratio, which is 3 ounces of oil to the gallon of gas. After trying this, I got about 30 miles of ride time and it fouled again. So now , I went with the next smaller main jet ( 158 main and the 45 pilot jet that had already been put in). I tried this and it seemed to run a little longer, maybe 50 miles or a half dozen rides, but still managed to foul out but this time while lugging around the trails. After contacting the dealer again, he said the warranty really doesn't cover much and jetting problems are kind of tough when we have no where to ride the bike for testing. Wow, these guys are really helpful. After my telling him I might try the smallest jets, he responded," yeah, why not try the smallest jets." I now have the smallest recommended main and pilot jets installed ( 155 main and 42 pilot ) and I raised the jet needle clip up a notch, thus dropping it lower in the needle jet. Right when I thought I had it licked ,you guessed it , fouled out oily plug 50 feet from camp. So, as it stands, the majority of fouling occurs @ cold start up within the first 100 yards or 2 and a half minutes of ride. Once the bike gets going, although, it really screams and runs great when it's running and I'm not pushing it. Currently I'm trying Golden Spectro @ a mix ratio of 3 ounces to the gallon of 93 octane gas and the clip on the needle is still one notch up. I went about 80 miles of hill climbing and trail riding with the same plug with my fingers crossed. By the way, I have been using the recommended NGK BR8ES and /or equivalent Champion RN3C and/or Denso W24ES/U sparkplugs since the very beginning and they all failed the same not noticing any one better than the other.
I have also cleaned an already clean air filter and changed the gear oil with PJ1 Clutch Tuner.
I don't know if this could have something to do with it and never heard of it before, along with the dealer who said,"Who really does that anyway," to the following statement in the owner's manual for break-in ------- After 12 miles of riding remove the cylinder head and cylinder and change the piston and rings. Also sand any unusual scoring in the cylinder and put a new NGK BR8ES in.
Any input on this whole scenario will be appreciated. I'm also not new to biking, for I have been riding on and off for approximately 20 years. And most bikes I've had, none be it Kaw's, have had one and only one plug in them for years. Imagine that! No kidding.
I'm also getting a little shell shocked on how to properly cold start this machine. Methods I've tried to no avail are as follows: Gas on, choke up for 30 seconds, pushed down for 10 seconds, give it two flicks of throttle to blow it out a bit and wamo, dead plug within 50 yards or less. I've tried one minute with choke up, forget it , plugs history. I've tried 10 seconds choke and 10 seconds kicked down, then a little throttle to clear it up and still - fouled plug. Although, this method does seem to yield the best results yet. Well, I'm getting tired now, so what do you all think?
P.S. The plug does seem to clean up nice after a nice column dump hill climb at wide open throttle. And slightly browned insulator and oily after lugging in the trails.
Thanks much,
Chet L.
Chief
" I first started using Kawachem oil and 93 octane gas @ a mix of 3.5 ounces oil to the gallon of gas. I went through about 3 sparkplugs in about 2 weeks, fouling out oily, primarily in the first 50 yards from my home camp. The bike is still under warranty, whatever that means, so I contacted the dealer and he said try a smaller pilot jet and don't use the Kawachem oil we like to use Yamalube @ a 40:1 ratio, which is 3 ounces of oil to the gallon of gas. After trying this, I got about 30 miles of ride time and it fouled again. So now , I went with the next smaller main jet ( 158 main and the 45 pilot jet that had already been put in). I tried this and it seemed to run a little longer, maybe 50 miles or a half dozen rides, but still managed to foul out but this time while lugging around the trails. After contacting the dealer again, he said the warranty really doesn't cover much and jetting problems are kind of tough when we have no where to ride the bike for testing. Wow, these guys are really helpful. After my telling him I might try the smallest jets, he responded," yeah, why not try the smallest jets." I now have the smallest recommended main and pilot jets installed ( 155 main and 42 pilot ) and I raised the jet needle clip up a notch, thus dropping it lower in the needle jet. Right when I thought I had it licked ,you guessed it , fouled out oily plug 50 feet from camp. So, as it stands, the majority of fouling occurs @ cold start up within the first 100 yards or 2 and a half minutes of ride. Once the bike gets going, although, it really screams and runs great when it's running and I'm not pushing it. Currently I'm trying Golden Spectro @ a mix ratio of 3 ounces to the gallon of 93 octane gas and the clip on the needle is still one notch up. I went about 80 miles of hill climbing and trail riding with the same plug with my fingers crossed. By the way, I have been using the recommended NGK BR8ES and /or equivalent Champion RN3C and/or Denso W24ES/U sparkplugs since the very beginning and they all failed the same not noticing any one better than the other.
I have also cleaned an already clean air filter and changed the gear oil with PJ1 Clutch Tuner.
I don't know if this could have something to do with it and never heard of it before, along with the dealer who said,"Who really does that anyway," to the following statement in the owner's manual for break-in ------- After 12 miles of riding remove the cylinder head and cylinder and change the piston and rings. Also sand any unusual scoring in the cylinder and put a new NGK BR8ES in.
Any input on this whole scenario will be appreciated. I'm also not new to biking, for I have been riding on and off for approximately 20 years. And most bikes I've had, none be it Kaw's, have had one and only one plug in them for years. Imagine that! No kidding.
I'm also getting a little shell shocked on how to properly cold start this machine. Methods I've tried to no avail are as follows: Gas on, choke up for 30 seconds, pushed down for 10 seconds, give it two flicks of throttle to blow it out a bit and wamo, dead plug within 50 yards or less. I've tried one minute with choke up, forget it , plugs history. I've tried 10 seconds choke and 10 seconds kicked down, then a little throttle to clear it up and still - fouled plug. Although, this method does seem to yield the best results yet. Well, I'm getting tired now, so what do you all think?
P.S. The plug does seem to clean up nice after a nice column dump hill climb at wide open throttle. And slightly browned insulator and oily after lugging in the trails.
Thanks much,
Chet L.
