08 wr450 Help with carb issues after cleaning
Posted November 11, 2015 - 12:36 PM
Posted November 17, 2015 - 10:22 PM
1. Mid body apart
2. Mid body upper part showing rubber gasket clogging fuel screw hole
3. Up close view
4. With the proper oring
Edited by Mbiker_101, November 17, 2015 - 10:34 PM.
Posted November 19, 2015 - 02:13 PM
Posted November 19, 2015 - 02:44 PM
Bike was running great, jetted perfectly per this forum. Jd red needle, 4th clip down, 168 main, 45 pilot, 2 turns out
Long story short, Crashed and split my foot open with foot peg so bike was sitting for about 3 months and carb was gummed up due to crappy cali gas.
Cleaned carb in detail, put everything back together with new spark plug.... Starts great but has a small stutter down low like not getting enough gas. Checked tps voltage and .782 volts, so i tore the carb apart again thinking a missed something, checked everything and put back together and had to turn fuel screw out three turns to idle smooth and i still have the stutter. I even unplugged tps because i know that is a quick test.
I'm lost as to what to try next? Why do i have to turn three turns on fuel screw now, what happened? How do i get rid of the stutter?
Now you are saying it is 'missing' ?
I think you need to be more specific: rpm, throttle position, hot or cold, age of gas, etc
Posted November 20, 2015 - 06:10 PM
Posted November 20, 2015 - 06:31 PM
Don't know specific rpm but gues 3000-4000, seems to be worse when warm gas is brand new vp100 octane. Pulled the plug and it looks normal. Going to open up the side to check the stator cables.
Have you tried unplugging your TPS?
Posted November 20, 2015 - 06:34 PM
Posted November 22, 2015 - 12:59 PM
I spent a ton of time troubleshooting this issue and it turns out it was a simple fuel filter..... But the good news is i went through about every other system and made sure they're 100% so my carb is as good a new and running perfect!!!!
Thanks for all the help guys!!! This forum rocks
Posted November 22, 2015 - 06:25 PM
You made no mention of a fuel filter.
Probably one of those translucent plastic ones, huh.
Posted November 22, 2015 - 06:57 PM
The accelerator pump camoflaged the issue by providing a solid squirt of fuel and when the throttle was constant the fuel line couldn't feed the carb so is felt like it was running out of gas... Well it was... Slowly
Posted November 24, 2015 - 05:57 PM
Went to the local station that sells VP 100 to put fresh gas in for the thanksgiving weekend in the desert.... Well, went for a test ride to make sure bike is 100% and the stumble and rough running is back???? Do you think it was bad gas even tho it was brand new? My thought is since this is 8.99 a gallon it doesn't get rotated often and is bad? Called the station and the owner swears it was new two weeks ago?
Is he full of it and it is bad gas or something different with 100 octane? I'm going to drain the tank and put regular gas in to test but i'm wondering if this was the issue all along?