Backfire once when clutch is pulled - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 6 Old 09-20-2017, 07:41 PM Thread Starter
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Backfire once when clutch is pulled

So I just got a 1994 650 and I am getting a backfire. Just one pop right when I pull the clutch to shift. Has a super trap exhaust. Also it seems sluggish to me. Any suggestions on where to start. My brain says carb clean but I'll defer to the knowledge on this forum
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post #2 of 6 Old 09-21-2017, 06:12 AM
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Check for an exhaust leak at the head. The bolts come loose.

“Take the risk of thinking for yourself , much more happiness , truth, beauty, and wisdom will come to you that way.” Hitchens
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post #3 of 6 Old 09-21-2017, 08:11 PM Thread Starter
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So I looked into it today. I removed the passenger side cover and I noticed that it appears the air box cover is missing in action. I can see straight into the air filter. I am assuming this would cause a lean condition. Can I just seal it with duct tape temporarily to see if it improves
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post #4 of 6 Old 09-21-2017, 08:16 PM
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Yes.
Is the foam air filter Properly Oiled to keep the dirt on the Outside?

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 84,000+ miles & counting
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post #5 of 6 Old 09-23-2017, 07:22 AM
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Quote:
Originally Posted by Drummerking55 View Post
.............Can I just seal it with duct tape temporarily to see if it improves
Silly question! Duct tape is good for everything except sealing heating ducts. Go figure.


“Take the risk of thinking for yourself , much more happiness , truth, beauty, and wisdom will come to you that way.” Hitchens
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post #6 of 6 Old 09-23-2017, 04:56 PM Thread Starter
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Problem solved. Fashioned a new air filter cover and turned out the mixture screw to adjust for the aftermarket exhaust and my backfire on decel is gone. And I have better throttle response as well.
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