Mileage UNSAT & Related Question - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 5 Old 10-02-2019, 01:54 PM Thread Starter
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Mileage UNSAT & Related Question

Morniní Yíall, Doc here.
I have Ď09, bought it new with 3 miles on it. Now Iíve looked over previous posts on how many miles you can go before need iní to get Ďgo juiceí. Iíve only gotten 26-32mpg before needing to fill up. Now hearing what yíall get get is UNSAT for me. Iíve removed the snorkel, tried different jetting-(thru the shop,FYI Iím a ĎGreen Hospital Corpsman, not a mechanicí, and with prior injuries thereís not a lot I can do... I live in NV, at roughly 5,000 ft. Last set of jets were a stage 2 whatever that is, tech said at this altitude need to go back to stock, so we did. Runs worse than before! Mileage about the same. Tried 16 tooth sprocket but not much improvement. Oh, I have a FMF Power Core exhaust which didnít do much other than the volume. Getting the stink eye from neighbors in the morning, and itís harder to start in the AM! Takes forever and sometimes it starts so slow and loud that it sound like itís gonna shoot the piston thru the case. After a few more tries it finally starts right and Iím good to go. Another related question, itís done this with the exhaust, but on deceleration it pops super loud and non stop. Donít know why but itís consistent when riding and is driving me bat s... crazy! Also have a Uni air filter if that helps. Any ideas on these things? My fun meter is pegged out! Sorry for the novel, but wanted to provide all info. Yíall have a great day! Doc
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post #2 of 5 Old 10-02-2019, 05:02 PM
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I'll first ask how many miles are currently on the meter?

Then I'll ask if your drive chain is or is not loose enough to lift the lower run Up to touch the rear tip of the rubber underslider?
If the chain can't touch it, when you set on it, it goes bow-string tight and robs HP.

Next what tires are you running & at what pressures? And how much do you weigh?
For reasonable fuel mileage I'll never recommend under 32 Front & 30 Rear regardless of brand & model of tire, but I might recommend More.

The 'choke' cable adjuster is under the fuel tank, dang them! The factory usually left them with too much slack.
Once the bike is running & warmed up, how far do you have to pull the enrichener lever before it affects the idle speed?

The cold start lever is NOT connected to a choke plate. It opens a separate fuel jet & air passage way.
If one opens the throttle plate even a smidgeon, it severely reduces the effectiveness of the cold start Enrichener Circuit!
Keep your hand OFF the RH grip and use your RH index finger on the starter button. And hold the button engaged for 5 full rotations of engine.
If it didn't start, let off the button & count to 10 to allow the raw fuel to vaporize, then engage the starter again.
The worst things we can do is 'play with the throttle' and 'tap,tap,tap' the starter button. IT will Not grind gears like a car starter.
You could even touch it at red-line! It would only 'spin-free'.

I live at 5000+ ft also. And I do know that a clean, stone stock KLR carb will work great from 5000 - 13,000 ft altitude.
And even quite well down to sea-level. They all came from the factory with the same set-up & can achieve 45-60 mpg if everything else is good.
But if it has been previously gunked up with old ethanol fuel, its needs a complete & proper cleaning.
Many people miss the 3 tiny low speed transition holes under the bottom lip of the throttle plate.
The Dyno-Jet brand jetting recommendations are TOO rich.

An un-oiled air filter can create an oil burner & cause low cold cranking compression, which can cause reluctant starting.
Tight valve tappet clearances, due to even normal wear can cause low CCC, which can cause reluctant starting.
The factory even got a few of the '08-'09 KACRs miss-timed, which can cause reluctant starting. (Which can be modified.)

Chances are high that your exhaust header to engine port Exhaust Gasket #11060-1108 needs to be replaced to reduce the 'after-fire' popping from the tail pipe.
Chances are high that no one ever re-torqued the header nuts by the 600 mile Break-in Maintenance & they may even be MIA.
But your FMF "silencer" will never muffle it as well as the stock muffler will.

There is a member on here by the handle of @Sarguy who lives in Reno I believe who must be a pretty good home mechanic. Click on his hi-lited name & send him a private message, I think he might like another riding partner.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #3 of 5 Old 10-04-2019, 02:19 PM
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PDwestman

"The cold start lever is NOT connected to a choke plate. It opens a separate fuel jet & air passage way.
If one opens the throttle plate even a smidgeon, it severely reduces the effectiveness of the cold start Enrichener Circuit!
Keep your hand OFF the RH grip and use your RH index finger on the starter button. And hold the button engaged for 5 full rotations of engine.
If it didn't start, let off the button & count to 10 to allow the raw fuel to vaporize, then engage the starter again.
The worst things we can do is 'play with the throttle' and 'tap,tap,tap' the starter button. IT will Not grind gears like a car starter.
You could even touch it at red-line! It would only 'spin-free'."


Now I know
As soon as I read, I went down to try. Total success. LOL

I had been doing it wrong.

Dicky
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The man on top of the mountain didnít fall there.
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post #4 of 5 Old 10-04-2019, 02:39 PM
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So I'll assume even at near sea-level at <80F the KLR650 likes the Full pull on the carb enrichener for the first start of the day, Dicky?

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #5 of 5 Old 10-04-2019, 03:45 PM
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Quote:
Originally Posted by pdwestman View Post
So I'll assume even at near sea-level at <80F the KLR650 likes the Full pull on the carb enrichener for the first start of the day, Dicky?


In the city at sea level and 80 F, it starts without the choke, but I have to keep a little accelerated until the temperature rises. When I use the choke I take that time to put on my helmet. In the mountains I must always use the choke, 2400 feet high above sea and 68F. I liked the fact of not touching the accelerator and keeping the 5 turns of the engine. That works even hot. I also gave the start button a very short touch and I think that also affected the engine start. Now I know.

The man on top of the mountain didnít fall there.
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