Posted December 02, 2001 - 03:12 PM
Posted December 02, 2001 - 03:28 PM
Hope this helps you, Ernie
Posted December 03, 2001 - 04:13 AM
Posted December 03, 2001 - 04:27 AM
Does it start easily when the hot start is pulled?? If so, you may be rich on the pilot.
Have you had the carb apart recently?? If so, check to make sure everything got put back together correctly. There have been posts recently about putting the carb back together wrong.
Posted December 03, 2001 - 05:17 AM
Posted December 03, 2001 - 06:19 AM
Posted December 03, 2001 - 06:25 AM
I would guess that Kansas is pretty flat. What elevation are you at?? One other thing to consider...the stock air filters do not allow great air flow. I use either No Toil, Twin Air or White Brothers filters. They are single stage which allows better flow but still dense enough to catch the dirt and dust.
Posted December 03, 2001 - 06:27 AM
Yes, mine is jetted correctly. No, I don't twist the wick when starting.
It'll run great all day on a new plug. When I try to start it the next
day, it will foul. A friend bought his in the warmer months of
last year and ragged on me all summer about how his still had the
"factory installed" plug in it. As soon as the weather turned a little
cool, he started fouling plugs.
It appears to be a cold weather, high altitiude phenom for us. FWIW,
we're all competent mechanics and jetters.
Posted December 03, 2001 - 09:05 AM
Posted December 03, 2001 - 09:33 AM
Posted December 03, 2001 - 09:44 AM
I had the exact same problem as you to a tee.
I fixed mine by simply dropping the needle down one and turning the screw 1/2 turn in from factory...I haven't foulded a plug since.. ...
except when my kid pumped the ol throttle 30 or so times when I wasn't looking
I'm going to do the Bk mod myself.....wish me luck.
Posted December 03, 2001 - 10:04 PM
I did some reading about spark plugs and their heat ranges. One article said the plugs need to be in the proper heat range to burn off the carbon on the insulator, but not so hot as to melt things. So I tried a CR7EK plug on the bike. I thought maybe the colder outside temps make the engine run cooler, and the plug cant burn off the carbon. The next cold day it ran great! I looked at the plug, it looked totally different on the ceramic than a CR8, it was tan and white rather than the sooty black. Same jetting, different looking plug, so forget looking at the plug to jet. I tried a CR8EVX yesterday for grins, and fouled a plug! I just ordered a four CR7EIX plugs from sparkplugs.com for $6.40 each ($15 at my dealer). IF YOU HAVENT TRIED A CR7 FOR THIS PROBLEM, YOU NEED TO!
Posted December 03, 2001 - 10:33 PM
Posted December 03, 2001 - 10:48 PM
were discussing this very thing this very morning. He is going to
try to CR7E route as well. FWIW, *his* bike came with a CR9E
I went to Texas about two weeks ago to race and fouled a plug
while there, but was totally my fault. I hadn't given the bike time
to warm up and blipped the wick and it went <blurp.....> and I was
pulling the tank... I haven't had a chance to rejet and ride since
I got back. Just for the record, I was 1st VetB and 13thOA B.
Posted December 04, 2001 - 08:23 AM
Also, you know about oiling the airfilter, right? Be sure you let it sit a day or so before starting it. These bikes pull alot of vacuum and some people have sucked that thick filter oil into the carb passages. Also, I have a kouba fuel screw adjuster and I can reach down with my gloves on and adjust it in a second. I always try to make mine backfire just the smallest amount, this way it starts without the hotstart, which is good for the dead engine starts that we have in our HS races.
Merfman, nice job on your race! Let me know if the plug helps, I am so psyched that I finally have my fouling problem solved. Was the race you did the RMEC Texas race on 11/18? Do you know Eric Croy, he is another top B-rider?
[ December 04, 2001: Message edited by: mikeolichney ]
Posted December 04, 2001 - 08:47 AM
Yea, it was Boondocker's that I went to... as far as Eric, I'm
not sure.. his name is familiar but I was chairman of the RMEC
for 2 years so I have a lot of names that sound familiar. I'm
semi-retired from racing all the RMEC events so I don't go to
as many as I used to. I think I missed a total of 4 events in
12 years so I just kinda burned out.
I go to Texas most often 'cause I love the 20% HP boost down
there and when the conditions are right, it's hard to beat racing
in that Texas loam. Boondocker's was definitely the best race
I've ridden this year, both the conditions and layout were very
much to my liking.
If you ever get down COS way, drop me a line. That goes for
any of you reading this BTW. ...
Posted December 08, 2001 - 06:17 AM
Posted December 10, 2001 - 01:14 PM
Posted December 10, 2001 - 01:33 PM
Originally posted by mikeolichney:
Also, I have a kouba fuel screw adjuster and I can reach down with my gloves on and adjust it in a second. I always try to make mine backfire just the smallest amount, this way it starts without the hotstart, which is good for the dead engine starts that we have in our HS races.
Do you know Eric Croy, he is another top B-rider?
[ December 04, 2001: Message edited by: mikeolichney ]
Would that be the Berthoud HS?
Are you going to be there this weekend?
I know I will! I can't wait, I have not ridden in 5 weeks, since I dislocated my shoulder at the Milliken HS back in Nov.
I think I know Eric, does he work at Powersports on 55th in Boulder?
Posted December 11, 2001 - 05:34 AM
I have had several TT people, most recently Scooter, come up and talk to me because my name is on my chest protector. I guess my lack of imagination pays off.
BTW, although I have not actually fouled a CR7 plug yet, my bike is still exhibiting minor problems (backfiring/stalling). Maybe its the ethanol in the gas here, I am going to try racegas soon. What are you other CO guys running for gas now?
[ December 11, 2001: Message edited by: mikeolichney ]
Thinking about Yamaha 250... by Arctic Pride
100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6
Yamaha YZ450F 2017 by Chris.GVS
2016 YZ450 by CaptainKnobby