05 yz450 qustions


3 replies to this topic
  • thumpyz

Posted February 23, 2008 - 08:24 PM

#1

I just bought a 05 yz450. The guy i bought it from said i should go through th carb because it wasnt idling right. well, it doesnt idle some times and others it does. It also pops almost constantly on deceleration. Once running it seems to run fine, with a slight bog right as you nail the gas. It has a DRD full exhaust and seems to be running a little rich. I dont really know anything about 4 stroke carbs, so i am at a disadvantage as to what to do. I will call DRD on monday and get their jetting specs, i was just curious as to what you guys might think is going on. There are no air leaks and the hot start is not getting hung up either. Any suggestions are gratly appreciated.:smirk:

  • 450_gal

Posted February 24, 2008 - 10:13 AM

#2

I'm going to bump this cause I know you need answers...

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted February 24, 2008 - 10:24 AM

#3

Excessive decel popping (some is normal) is generally an indication of lean idle circuit jetting or an air leak in the exhaust. Try backing out the idle fuel screw some to see if this improves. A partially blocked pilot jet may also be at fault, as could low float level. Also, check the jetting sticky to se if someone has a setup similar to yours.

  • ariam1972

Posted February 25, 2008 - 08:28 AM

#4

I am having similiar problems, did the advise from (grayracer513) help at all? please let me know - thank you





Related Content

Forums
Photo

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride


Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.