02 650 backfiring
Oct 2, 2007 | 04:49 PM
#1
Thread Starter
|
Weekend Warrior
Joined: Oct 2007
Posts: 3
Likes: 0
02 650 backfiring
I have an 2002 650 that started backfiring after letting off on the throttle. A few minutes later it will blow oil everywhere,so much that I can't find the source. Would anyone know why ? Would it be pressure from the valves being to tight?
Oct 2, 2007 | 05:05 PM
#2
Pro Rider
Joined: Oct 2001
Posts: 1,743
Likes: 0
02 650 backfiring
Backfiring
I assume the sound is from the exhaust. If so, check for exhaust leak in the exhaust system. Also, you might have little too rich carburetion, the unburned fuel is combusting in the exhaust system.
Blowing Oil
Open the air box cover and see if any oil residue is found inside. Clean up. Check oil level and for any sign of fuel dilution.
Tight valves usally cause hard starting, rough idling, stalling, etc - running issues. But it doesn't hurt to check/adjust the valve clearance if it's not done within last 50 hrs of running time.
I assume the sound is from the exhaust. If so, check for exhaust leak in the exhaust system. Also, you might have little too rich carburetion, the unburned fuel is combusting in the exhaust system.
Blowing Oil
Open the air box cover and see if any oil residue is found inside. Clean up. Check oil level and for any sign of fuel dilution.
Tight valves usally cause hard starting, rough idling, stalling, etc - running issues. But it doesn't hurt to check/adjust the valve clearance if it's not done within last 50 hrs of running time.
Thread
Thread Starter
Forum
Replies
Last Post
fordfaithful21
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
9
Dec 7, 2015 05:52 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)