k3 600 Missing? Bogging? Desperate for help. - GSXR.com
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post #1 of 6 (permalink) Old 08-07-2019, 09:35 PM Thread Starter
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Thumbs down k3 600 Missing? Bogging? Desperate for help.

I just got this bike with no prior experience and now im kinda of stuck, almost ready to take it to a shop but my pride wont let me try and figure out what the problem is myself because i know its something just stupid, or maybe not? i dont know.

Anyhow, the problem with this bike is that no matter what gear, from 6-8k rpms the bike will jump and sputter and once i go more open on the throttle the bike will accelerate, since i have nothing to compare it to (hence no prior experience) i don't really know if it has all its got in the top end either... once it reaches 12k it just isn't putting down all the power i feel it should (very sluggish after 95mph. So in conclusion; Im stumped. list of my efforts below.

replaced coils
spark plugs are good
cleaned injectors
adjusted TPS (was _c now its -c)
adjusted idle screw because the bike was idling at 900rpms (now set to 1200)
took out fuel pump (to my surprise it was an 02 750 pump?) filter was pristine.

Previous owner stated that he replaced: stator, rectifier, put new plugs in, and a new fuel pump.

Any help would be very appreciated. Thank you!
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post #2 of 6 (permalink) Old 08-07-2019, 10:41 PM
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Injectors. Had same issue, and after checking the internal fuel pump and going through everything else it turned out the injectors clogged due to the ethanol. Exact same bike so I would pull them out, and either get them cleaned or buy new ones. I would check your fuel pump first by putting a pressure gauge on it, should be 43 psi when you turn the key, and you can do a fuel flow test by pulling the hose off and running it into a measuring cup to check it as per the manual's instructions.
Commonly the secondary fuel filter gets clogged, and you can backflow it to clean it out as the new one is over $200.

Here's a link to the manual and you can follow the instructions for the tests on pages 4-53 to 4-55 for the tests.
https://drive.google.com/open?id=1-T...HDXls8msLzwOxN

Not Grinding, Not Riding

Last edited by Vader225; 08-07-2019 at 10:45 PM.
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post #3 of 6 (permalink) Old 08-07-2019, 11:38 PM Thread Starter
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Thanks! I will def Check out the secondary fuel filter and do a flow test on the pump tomorrow. I cleaned the injectors today, but not thuroughly as i didnt give them power, just sprayed alot of cleaner in them. I have a manual and couldnt find how many ML is suppose to flow out with two cycles from the kill switch, would you happen to know?
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post #4 of 6 (permalink) Old 08-08-2019, 05:09 AM
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Is the problem consistent?

First I would eliminate the side stand safety switch as a possible problem. Zip tie the side stand up tight and see if the symptoms change.

As far as the injectors, I've had luck by putting injector cleaner in the inlet port then triggering the injector with a 12v battery. A 9v will do the same.

You will see that some cleaner gets pumped through each time you trigger it.

Quote:
Originally Posted by Chuckster View Post
If you think reading is tricky, how the hell are you going to follow troubleshooting directions?
"Riding well is difficult, riding poorly is easy and painful."
- Nick Ienatsch


"We're all here because we're not all there" - Guy Favron on Gold Rush

K6 750
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post #5 of 6 (permalink) Old 08-08-2019, 09:50 PM
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Quote:
Originally Posted by DanielSon View Post
Thanks! I will def Check out the secondary fuel filter and do a flow test on the pump tomorrow. I cleaned the injectors today, but not thuroughly as i didnt give them power, just sprayed alot of cleaner in them. I have a manual and couldnt find how many ML is suppose to flow out with two cycles from the kill switch, would you happen to know?
It's aprox 1200 ml for 30 seconds in the manual, and If I remember correctly the kill switch runs for about 10 seconds, so 2 cycles should put you at about 900-1000ml which would check out ok.
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Not Grinding, Not Riding
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post #6 of 6 (permalink) Old 08-23-2019, 05:21 AM
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So does your bike still run like crap?

Quote:
Originally Posted by Chuckster View Post
If you think reading is tricky, how the hell are you going to follow troubleshooting directions?
"Riding well is difficult, riding poorly is easy and painful."
- Nick Ienatsch


"We're all here because we're not all there" - Guy Favron on Gold Rush

K6 750
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