jetting question - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

  • 2 Post By rebus20
  • 1 Post By DPelletier
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post #1 of 4 Old 02-17-2018, 05:00 PM Thread Starter
Join Date: Dec 2017
Posts: 14
jetting question

My 07 was jetted for the elevation at stone mountain ga and ran perfect on the test drive. I get it home and notice the rpms are hanging. If I shift at 3krpms it stays their a second or 2 before coming down. The bike has a fmf powerbomb header and fmf pipe with a 142 main. Is that sufficient with the airbox mod and uni filter at sea level? The mixture screw was at 2.25 turns so I adjusted it to 2.5 and seems to run better but I noticed some popping on decel that wasn't their before. It has the jet kit from eagle mikes.
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post #2 of 4 Old 02-17-2018, 05:41 PM
Join Date: Nov 2009
Location: Lander, Wyoming
Posts: 6,511
All aftermarket silencers will exhibit more deceleration afterfire or popping. But one should check to be sure you haven't loosened or worse lost one or both header nuts. This allows outside air into the exhaust, which causes the trailing throttle mixture to ignite in the header, Pop, pop, Pop!

Loose or lost header nut will allow the copper header gasket to burn out. I'll suggest you purchase one, they are 1 time use item. Anti-seize grease on the threads & 15 ft lbs torque Maximum.

Your jetting should be perfectly fine.

Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #3 of 4 Old 02-21-2018, 04:30 PM Thread Starter
Join Date: Dec 2017
Posts: 14
Pulled the jets and the pilot was clogged along with some of the holes in the main jet holder. Got it cleaned up and shes running perfect.
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post #4 of 4 Old 02-21-2018, 05:26 PM
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Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,855
Glad to hear it Scott.

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