|
|
| Dirt Bikes & ATV's Ride a dirtbike, dualsport or ATV? Tell us all about it here! |
|
Welcome to the Motorcycle-Journal Forums forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact us. |
 |
| | LinkBack | Thread Tools |
05-06-2006, 02:39 AM
| #1 (permalink) |
| Newbie Joined: May 2006
Posts: 3
|  Help YZ80 1989 problems my bike.. isn't hitting band.. when it is about to it jumps in and out of band... and the revs go low... i've tried a few things.. i cleaned out my carbi and my air filter.. n my spark plug.. but i still hae no idea wat could b wrong with it.. my exhust has a few small cracks in it.. could it be that...? it was great when it running properly.. it could beat alot of newer models specialy in a straight out drag.. but now it jus goes in and out of pand.. and band doesn't feel as powerful... any help would be great..... i'm lost...  |
|  |
| Sponsored Links |
    |
|
05-09-2006, 09:39 PM
| #2 (permalink) |
| Sprocket Pilot   Joined: Sep 2004
Bike: Which one of the 9?
Location: USA
Posts: 887
|  Simple things first. 1) Put a brand new sparkplug in the bike 2) Make sure the Fuel tap screen is clean by removing the entire unit from the tank 3) Check your kill switch is not damaged 4) Make sure the Sparkplug wire and cap are in good condition and not dry rotted |
|
| |
|
05-10-2006, 11:04 PM
| #3 (permalink) |
| Sprocket Pilot Joined: Sep 2004
Bike: Which one of the 9?
Location: USA
Posts: 887
| I failed to mention in the other post that you need to check the float height and adjust it to spec. When you cleaned the carb you may need to reset it. Also if your exhaust has enough cracks to cause the pipe to loose backpressure then it would need replacement or welding as it will cause these type of issues.
Last edited by Dave2122; 05-10-2006 at 11:24 PM. |
|
| |
|
05-11-2006, 12:59 AM
| #4 (permalink) |
| Newbie Joined: May 2006
Posts: 3
| i all ready done all that.. it didn't do much.... jus made it blow a little less smoke.. i think it might be my power valve... coz it ran fine untill after i droped gear after realy pushing.. i think i went too ast.. n droped gears to fast.. so my teacher at skool.. who is full into motorcross.... he's liek top 10 in Qld i think.. he told me it'll probably be my power valve... but thanx for all that.. i'll keep the progress posted
|
|
| |
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
| |
Similar Threads | ||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Help YZ80 1989 problems | dbmcmillin | Mechanics Corner | 1 | 05-08-2006 02:35 PM |
| 1989 RM80 Oil Change | Over The Bars | Dirt Bikes & ATV's | 0 | 06-24-2005 10:18 PM |
| 1989 rm 250 parts | spyderrocs | Dirt Bikes & ATV's | 0 | 02-10-2005 08:48 PM |
| 1989 Lt500r | Zman31 | Dirt Bikes & ATV's | 1 | 12-15-2004 11:33 AM |
| 1989 kaw EX 500 | ctx46 | Mechanics Corner | 1 | 07-07-2004 08:00 PM |
