Hey, my name is Mikel. I'm new to the forum world but in desperate need of help. I have a k6 600 with k&n filter, pc3, n custom straight pipe. Bike cold starts perfect and runs like a champ. But if I stop to get gas (for example)and temp reads 180 or higher it won't start. Engine turns Strong. Starter is fine. Fuel pump primes. No check lights on cluster. Changed the oil and spark. Unplugged the power commander. But no results. Any ideas?? Thanks in advanced. Located in kissimmee, fl area looking for people to ride with.
k6 600 won't hot start!! help!!
Mikel_j_santiago
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Hey, my name is Mikel. I'm new to the forum world but in desperate need of help. I have a k6 600 with k&n filter, pc3, n custom straight pipe. Bike cold starts perfect and runs like a champ. But if I stop to get gas (for example)and temp reads 180 or higher it won't start. Engine turns Strong. Starter is fine. Fuel pump primes. No check lights on cluster. Changed the oil and spark. Unplugged the power commander. But no results. Any ideas?? Thanks in advanced. Located in kissimmee, fl area looking for people to ride with.
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Charging system is working fine. Tested ac at the battery
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72,662 Posts
That doesn't tell me anything. What were the results of the stator and reg/tec tests?
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Well I just tested the battery off holding charge at 12.4 started the bike and was charging at 13.5. Thats all I did.
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Is there some other test I need to run?? Cause like I said in the original post, the motor and starter turn over like normal.
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My bad I'm not a master mechanic. I assumed since the stator and rectifier were considered a part of the charging system, that's what you were talking about.
By the way, 12.4V no-load voltage and 13.5V with the charging system running, are not exactly indicative of a healthy system. From your description, I suspect a bad battery, or a failed charging system component, as Anthony suggests. What's your voltage when holding 3-5000 rpm? Is it the same when the engine is hot? When it won't start, does opening the throttle while cranking help? Do you hear sputters, backfires, or other signs of firing while cranking?
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It does sputter and at times hitting the throttle a bit does help. I've also heard about the exhaust check valve causing some issues.
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My guess is it isnt reg/rec problem, you'd hear the battery hasn't enough power in it without even needing a multimeter.
Also, if it was the reg/rec it would give the same hassle cold starring...
Hot starting Trouble is usually a sign of valve clearance....
What mileage is on the bike...?
Also, if it was the reg/rec it would give the same hassle cold starring...
Hot starting Trouble is usually a sign of valve clearance....
What mileage is on the bike...?
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38k ? honestly have been trying to avoid a valve adjustment mainly cause I hear no ticking or knocking from the motor. As well as the fact of leaving my bike overnight at a mechanic doesn't sit well with me. Most of my local shops require 2 days just due to the fact that they are busy.
True, one would certainly hear it. Whether one would also notice depends. For instance, I only noticed that my starter was cranking pretty slowly ever since I got my bike, when I changed battery for the first time and heard the difference in cranking speed with the new one.
Actually the R/R doesn't much enter into the matter of cranking directly, that is, it's not meant to assist in providing the charge needed to crank. That's handled by the battery, which the R/R might not be charging properly (or it might just be failed and not holding charge). The question is whether the battery might me marginally charged enough to crank when cold but not when hot. Resistances generally go up with temperature, so that's not unlikely, but I'm not sure either.
Good point, especially if the problem developed very slowly.
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While the issue might be valve related, I am still going with the reg/rec.
I say this because on my K6 600 race bike, I was having hot start issues, especially after sitting on the grid during a red flag situation. Tested the reg/rec, it was bad, replaced it with a known good one, and the hot start issues went away.
:dunno
I say this because on my K6 600 race bike, I was having hot start issues, especially after sitting on the grid during a red flag situation. Tested the reg/rec, it was bad, replaced it with a known good one, and the hot start issues went away.
:dunno
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All very good points above which the OP should take on board,
Personally as I mentioned above I've never heard of hot starting trouble being connected to a regrec but hey stranger things have happened and it wouldn't hurt to test it
Personally as I mentioned above I've never heard of hot starting trouble being connected to a regrec but hey stranger things have happened and it wouldn't hurt to test it
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Thank you to all who have posted. I am considering all issues that were listed. As of now I am going to do a radiator flush and going to replace the coolant with Engine Ice. See how that works, and then from there planning on taking to a dealership to have the rectifier and regulator tested as well as get the valves checked. I will keep you posted on my results. I will be doing the radiator flush today but I won't be able to list the results due to the fact that I live in Florida and we are currently going through this tropical storm. So pretty crappy weather. Thanks
Don't get me wrong; that's what my money's riding on as well, regarding the dominant cause. I agree that valves are a thing to consider, but, barring any possibility of timing having changed somehow, the clearance changes so slowly (esp. on a street bike), that I'd expect the problem to have evolved over many thousands of miles if it was related to that, beginning with not starting once in a while, then more often and ending up with never starting hot (and then probably sometimes when cold, too).
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Well in regards to the time frame of when it started, I honestly have no idea. I asked previous owner about it and he isn't sure. Apparently he had no issues but I'll call his bluff on that cause I have not touched or altered anything mechanically on this bike. The bike has been doing this since I've had it for the past 3 months. Just did a radiator flush today and changed from coolant to engine ice and what a huge difference in riding temp. Unfortunately the issue still persists so to the shop we go. Have to wait a while till I can gather up the funds for full diagnostic but hopefully within the next 2 weeks.
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