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[tgrosjea]

Have a 2001 klr with about 8k . Since I took it out of winter storage this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated.

[Jeff Khoury]

After a moment's thought, I considered that you may not have been a member of the list since I posted this stuff. Here are high-level steps: Take off the carb, remove the top cover. Remove slide, diaphragm and needle to prevent damage remove bowl, being careful of the gasket. unscrew pilot jet. clean all the holes in the pilot jet with carb cleaner and a guitar string or strand from a brass wire brush and pressurized carb cleaner. clean the passages by spraying pressurized carb cleaner through the pilot circuit, looking to make sure it comes squirting out the holes in the venturi. (Plug the open holes with your fingers to get good pressure) take the end off a cotton swab and spin it in the hole where the pilot jet goes. reassemble. run some sea foam through it for a couple of tanks. -Jeff Khoury Astatic Solutions, LLC.

----- Original Message ----- From: "tgrosjea" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Monday, June 15, 2009 7:13:46 PM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] hard starting and backfireing Have a 2001 klr with about 8k . Since I took it out of winter storage this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated. [Non-text portions of this message have been removed]

[Jeff Khoury]

Your carb is most likely your problem, generally a clogged pilot jet. See some of my previous posts on how to properly clean it and it will be good as new. -Jeff Khoury Astatic Solutions, LLC.

----- Original Message ----- From: "tgrosjea" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Monday, June 15, 2009 7:13:46 PM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] hard starting and backfireing Have a 2001 klr with about 8k . Since I took it out of winter storage this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated. [Non-text portions of this message have been removed]

[transalp 1]

The jets, emulsification tube and all the fun tiny passages that connect everything can be gummed up. Just cleaning the jets *may* help. But, a full teardown and soak in carb cleaner is the surest way to get everything whistle clean. Don't do like a customer of the shop's and drop the whole,unassembled carb in some solvent. He learned the hard way what a set of four Honda air cut-off valves cost. ( $100 each.) You gotta take a carb apart and remove any/all plastic & rubber parts 1st. I'm just glad we have only one carb to deal with. Even after doing a couple of sets of old CBX carbs, I will still hug the person that gets Kawasaki to f.i. the KLR650. eddie

> [Original Message] > From: tgrosjea > To: DSN_KLR650@yahoogroups.com> > Date: 6/15/2009 10:14:59 PM > Subject: [DSN_KLR650] hard starting and backfireing > > Have a 2001 klr with about 8k . Since I took it out of winter storage

this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated.

> > > >

[The Reverend]

Wouldn't this run the risk of marring the jet and thus alter the jetting? Carb work always makes me nervous. Even a closed-loop FI system on the KLR would be an improvement. Mine is a DOG when I get over 9000'. -----Original Message----- From: DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] On Behalf Of Jeff Khoury . clean all the holes in the pilot jet with carb cleaner and a guitar string or strand from a brass wire brush and pressurized carb cleaner.

[dooden]

First thing I would do: Get Seafoam, read can ( Amazing stuff hey, it does everything ) now add some to the tank per the can as to how much. Shake bike around to get it mixed. Turn off fuel valve, drain carb bowl into a glass jar and see what came out, now turn fuel valve back on, apply a little vacuum (suck on vacuum line) to get fuel flowing to carb, with the drain screw still out watch to see fuel is flowing to carb, since the drain screw is still out and your jar is filling. Now let it flush with a little bit of fuel, put drain screw back in and suck on vacuum line to fill bowl, reattach vacuum line to petcock. Start bike and run long enough to get your mixed fuel through out the carb and let it sit overnight or a couple hours and restart. Hopefully the Seafoam has done the trick. Before storing the bike for winter add Seafowm to the tank and run it a few minutes to get that mixture in the carb, Seafoam is a stabilizer also unlike that StaBil (I never use that stuff) Second thing would be a tear down of the carb but that is way more hard to explain. Dooden A15 Green Ape

--- In DSN_KLR650@yahoogroups.com, "tgrosjea" wrote: > > Have a 2001 klr with about 8k . Since I took it out of winter storage this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated. >

[Rick McCauley]

I agree. Seafoam is amazing stuff. BUT, nothing is better than draining the carb. I always drain the bowl before putting my bike away for the Winter. Even if my bike was going to sit for more than a couple weeks, I would drain the bowl. Today's gas breaks down rapidly. That may sound a little paranoid, but for the problems it can cause in that tiny pilot jet, I will be paranoid. It only takes 10 seconds to drain the bowl. Rick A17

--- On Tue, 6/16/09, Dooden wrote: From: Dooden Subject: [DSN_KLR650] Re: hard starting and backfireing To: DSN_KLR650@yahoogroups.com Date: Tuesday, June 16, 2009, 7:00 AM First thing I would do: Get Seafoam, read can ( Amazing stuff hey, it does everything ) now add some to the tank per the can as to how much. Shake bike around to get it mixed. Turn off fuel valve, drain carb bowl into a glass jar and see what came out, now turn fuel valve back on, apply a little vacuum (suck on vacuum line) to get fuel flowing to carb, with the drain screw still out watch to see fuel is flowing to carb, since the drain screw is still out and your jar is filling. Now let it flush with a little bit of fuel, put drain screw back in and suck on vacuum line to fill bowl, reattach vacuum line to petcock. Start bike and run long enough to get your mixed fuel through out the carb and let it sit overnight or a couple hours and restart. Hopefully the Seafoam has done the trick. Before storing the bike for winter add Seafowm to the tank and run it a few minutes to get that mixture in the carb, Seafoam is a stabilizer also unlike that StaBil (I never use that stuff) Second thing would be a tear down of the carb but that is way more hard to explain. Dooden A15 Green Ape --- In DSN_KLR650@yahoogro ups.com, "tgrosjea" wrote: > > Have a 2001 klr with about 8k . Since I took it out of winter storage this spring it has been real hard starting and backfires until its good and hot.fresh gas and plug did nothing. I adjusted valve clearance less than 1k ago. I am thinking about cleaning/rebuilding the carb next. any suggestions would be greatly appreciated. > [Non-text portions of this message have been removed]

[Michael Martin]

I think he meant to say use a nylon guitar string, not a steel one. I use a strand from a brass brush. A nylon bristle from a brush would be good, too. Mike Martin, Louisville, KY ________________________________ From: The Reverend Subject: RE: [DSN_KLR650] hard starting and backfireing Wouldn't this run the risk of marring the jet and thus alter the jetting? Carb work always makes me nervous. Even a closed-loop FI system on the KLR would be an improvement. Mine is a DOG when I get over 9000'. -----Original Message----- From: DSN_KLR650@yahoogro ups.com [mailto:DSN_KLR650@yahoogro ups.com] On Behalf Of Jeff Khoury . clean all the holes in the pilot jet with carb cleaner and a guitar string or strand from a brass wire brush and pressurized carb cleaner. __ . [Non-text portions of this message have been removed]

[Rick McCauley]

Copper wiring works good too. You just wind however many strands it takes to create the proper diameter. I just cleaned the jets on a Rebel 250. Just one strand for the pilot jet, and 3 strands thru the main jet. Of course different cords have different thickness of strands. Rick A17

--- On Tue, 6/16/09, Michael Martin wrote: From: Michael Martin Subject: Re: [DSN_KLR650] hard starting and backfireing To: DSN_KLR650@yahoogroups.com Date: Tuesday, June 16, 2009, 8:37 AM I think he meant to say use a nylon guitar string, not a steel one. I use a strand from a brass brush. A nylon bristle from a brush would be good, too. Mike Martin, Louisville, KY ____________ _________ _________ __ From: The Reverend Subject: RE: [DSN_KLR650] hard starting and backfireing Wouldn't this run the risk of marring the jet and thus alter the jetting? Carb work always makes me nervous. Even a closed-loop FI system on the KLR would be an improvement. Mine is a DOG when I get over 9000'. -----Original Message----- From: DSN_KLR650@yahoogro ups.com [mailto:DSN_ KLR650@yahoogro ups.com] On Behalf Of Jeff Khoury . clean all the holes in the pilot jet with carb cleaner and a guitar string or strand from a brass wire brush and pressurized carb cleaner. __ . [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]

[Jeff Khoury]

Yes, you could do damage when you do it. That's why you must use BRASS and be careful. Most of the time when I find pilots clogged there will be a solid crust of varnish clogging them. You can either soak for a long time, or pop it open with a brass wire. your choice. I've never damaged one, but I'm careful when doing it. Jets are fragile, but not as fragile as that. -Jeff Khoury Astatic Solutions, LLC.

----- Original Message ----- From: "The Reverend" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Monday, June 15, 2009 10:34:20 PM GMT -08:00 US/Canada Pacific Subject: RE: [DSN_KLR650] hard starting and backfireing Wouldn't this run the risk of marring the jet and thus alter the jetting? Carb work always makes me nervous. Even a closed-loop FI system on the KLR would be an improvement. Mine is a DOG when I get over 9000'. -----Original Message----- From: DSN_KLR650@yahoogroups.com [mailto: DSN_KLR650@yahoogroups.com ] On Behalf Of Jeff Khoury . clean all the holes in the pilot jet with carb cleaner and a guitar string or strand from a brass wire brush and pressurized carb cleaner. [Non-text portions of this message have been removed]