wtf is going on

alozon45 · 07-10-2008, 08:36 PM

ok, so i was riding like a hour ago with my buddy. i have a 1987 kdx 200. i was riding and all of a sudden as i give it throttle it would bog out slow down and die out after i came to a complete stop. i just put a full tank of gas in it the other day, running it 32:1. previous owner ran it 50:1. well, it starts up still, but once u give it more than a little throttle it dies out. give it choke and it dies out. air filter is fine, spark plug is fine, fuel lines are fine, nothing clogged in fuel lines. help please!

wr250f95 · 07-10-2008, 08:43 PM

its running too rich on oil its probably jetted for 50:1 so change it for 32:1 if thats what you want to run

Luedecke2009 · 07-10-2008, 08:55 PM

Back in the 80's I ran my 2 stroke 50:1, never had any problems....

tigmaster · 07-10-2008, 09:10 PM

Jetting matters lots on what mixture you run. With the now switch to 32:1 your engine will be running leaner. Yes there will be oil but the actual engine will be running leaner. You should not get a bog. Obviously I would try some 50:1 and see what you get but I will think about other stuff for a bit.

gscx · 07-11-2008, 12:23 AM

maybe the float has come out of adjustment somehow and there is no fuel for the engine, and take your carb of and clean it, it sorta sounds like the pilot jet is clogged

turtlemann14 · 07-11-2008, 12:57 AM

ya, i think gscx is right
if it were the fuel mix it would not run then die out would it?
it would just run crappy

podfish · 07-11-2008, 08:44 AM

pretty odd - that's exactly the same model I have, and I had something similar recently. I rode to the top of the hill (maybe six or seven miles up a fire-road) and on the way down, it started to bog at midrange. But on mine, if I held the throttle wide-open, it ran pretty well. And it starts and idles fine. But nothing in the middle. A new plug didn't help
Right now it's spread out on the garage floor, while I try to get time to clean out the carb, air filter, fuel filter, tank vent... the worst thing would be if it's not putting out quality spark because of a failing CDI or coil. I can't find anyone capable of testing electrics on a bike that old.

gscx · 07-11-2008, 12:39 PM

all of that is symtoms of a clogged pilot

wr250f95 · 07-11-2008, 12:47 PM

Quote:

Originally Posted by tigmaster

Jetting matters lots on what mixture you run. With the now switch to 32:1 your engine will be running leaner. Yes there will be oil but the actual engine will be running leaner. You should not get a bog. Obviously I would try some 50:1 and see what you get but I will think about other stuff for a bit.

last time I checked oil would foul a plug.

Hardtail · 07-11-2008, 06:30 PM

If it's not overflowing(drain tube) I'd say crap in the carb, or somthing sticking

07-10-2008, 08:36 PM	#1 (permalink)
alozon45 C Rider Join Date: Jun 2008 Posts: 47 iTrader: (0)	wtf is going on ok, so i was riding like a hour ago with my buddy. i have a 1987 kdx 200. i was riding and all of a sudden as i give it throttle it would bog out slow down and die out after i came to a complete stop. i just put a full tank of gas in it the other day, running it 32:1. previous owner ran it 50:1. well, it starts up still, but once u give it more than a little throttle it dies out. give it choke and it dies out. air filter is fine, spark plug is fine, fuel lines are fine, nothing clogged in fuel lines. help please!

07-10-2008, 08:55 PM	#3 (permalink)
Luedecke2009 C Rider Join Date: Jun 2008 Location: Amarillo Texas Posts: 114 iTrader: (0)	Back in the 80's I ran my 2 stroke 50:1, never had any problems.... __________________ Live hard, Ride fast, Die young and leave a goodlooking corpse!!

07-10-2008, 09:10 PM	#4 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,530 iTrader: (1)	Jetting matters lots on what mixture you run. With the now switch to 32:1 your engine will be running leaner. Yes there will be oil but the actual engine will be running leaner. You should not get a bog. Obviously I would try some 50:1 and see what you get but I will think about other stuff for a bit. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

07-11-2008, 12:23 AM	#5 (permalink)
gscx Pro Mototips Member Join Date: Aug 2007 Location: bridgeville DE Posts: 2,237 iTrader: (0)	maybe the float has come out of adjustment somehow and there is no fuel for the engine, and take your carb of and clean it, it sorta sounds like the pilot jet is clogged __________________ Sold

07-11-2008, 12:57 AM	#6 (permalink)
turtlemann14 Pro Mototips Member Join Date: Oct 2007 Location: West Virginia Posts: 3,990 iTrader: (0)	ya, i think gscx is right if it were the fuel mix it would not run then die out would it? it would just run crappy __________________ If it does not move at first, get a bigger hammer!! Myspace Yamaha 1982 xj550 under bike lights Kawasaki klx250 1979 custom fiberglass silencer+ Honda xr200r 1985 stock = Dakaw Dk250 2008

07-10-2008, 08:43 PM	#2 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,848 iTrader: (1)	its running too rich on oil its probably jetted for 50:1 so change it for 32:1 if thats what you want to run

07-11-2008, 08:44 AM	#7 (permalink)
podfish C Rider Join Date: May 2008 Posts: 7 iTrader: (0)	pretty odd - that's exactly the same model I have, and I had something similar recently. I rode to the top of the hill (maybe six or seven miles up a fire-road) and on the way down, it started to bog at midrange. But on mine, if I held the throttle wide-open, it ran pretty well. And it starts and idles fine. But nothing in the middle. A new plug didn't help Right now it's spread out on the garage floor, while I try to get time to clean out the carb, air filter, fuel filter, tank vent... the worst thing would be if it's not putting out quality spark because of a failing CDI or coil. I can't find anyone capable of testing electrics on a bike that old.

07-11-2008, 12:39 PM	#8 (permalink)
gscx Pro Mototips Member Join Date: Aug 2007 Location: bridgeville DE Posts: 2,237 iTrader: (0)	all of that is symtoms of a clogged pilot __________________ Sold

07-11-2008, 06:30 PM	#10 (permalink)
Hardtail Pro Mototips Member Join Date: Dec 2006 Location: Southeast V.A. Posts: 1,883 iTrader: (1)	If it's not overflowing(drain tube) I'd say crap in the carb, or somthing sticking __________________ I love the smell of gasoline!! I woke up.....life is good!!!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove advertisements Sponsored links