KPM 200 Resource thread - Page 8

Falkon45 · 08-07-2022, 12:16 PM

Hey, another question. What grade of had are you using? Do you get any symptoms of detonation? Basically, the engine will randomly sound like popcorn in a microwave in multi cylinder engines. Not sure what it would sound like in thumpers. Have you checked or changed your plug? Right now, with everything you've done, it sounds like you might be lean, and the cooling system can't keep up.

JimS · 08-07-2022, 07:09 PM

I've been just over 700 miles on my KPR in the heat of New Mexico (over 100 every day) with no issues.

I wouldn't run thicker oil to try to reduce Temps unless you have changed bearings to increase clearance for some reason.

Sounds like you may have got a bad apple.

KPMRider · 08-08-2022, 10:12 AM

FIX!!! Operator error!!!

As many of us know it's really frustrating to be running around chasing your own tail on a mechanical or electrical problem. I figured it out!

These KPM 200s are very small bikes, and as many of us know storage is difficult. I had installed a small storage bag on the front forks. As many of us know when you are behind a semi in town you still get wind, but when you are behind a semi on the highway it blocks a considerable amount of wind. I think the same principle applied here, that small storage bag blocked just enough wind to keep air from flowing through my radiator fins. Last night I pulled out all the stops I installed the thermometer gauge and got a no drip radiator funnel to pull 100% of the air out of the system and after all my repairs were done I had my buddy just point out that the bag on the front might be blocking the wind. To be honest I hadn't even considered that, it seems like it should be far enough away that it's not an issue however these bikes are very small and asked to do quite a bit of work, it blocked just enough wind to where it just wouldn't cool off fast enough when I was at high RPMs for a long amount of time. After removing the bag my temperature gauge reads no higher than 80 degrees C if I've been on the highway for a long time, and I stick around 70 to 74 degrees C when I am in the city

Aftermarket accessories on your front forks can cause overheating on the KPM 200, unfortunately I have verified it myself.

Safe riding guys, thanks for all the help!

P.S. sorry for the hate mail Lifan, you do make a quality product.

Falkon45 · 08-08-2022, 11:38 AM

Quote:

Originally Posted by KPMRider

FIX!!! Operator error!!!

As many of us know it's really frustrating to be running around chasing your own tail on a mechanical or electrical problem. I figured it out!

These KPM 200s are very small bikes, and as many of us know storage is difficult. I had installed a small storage bag on the front forks. As many of us know when you are behind a semi in town you still get wind, but when you are behind a semi on the highway it blocks a considerable amount of wind. I think the same principle applied here, that small storage bag blocked just enough wind to keep air from flowing through my radiator fins. Last night I pulled out all the stops I installed the thermometer gauge and got a no drip radiator funnel to pull 100% of the air out of the system and after all my repairs were done I had my buddy just point out that the bag on the front might be blocking the wind. To be honest I hadn't even considered that, it seems like it should be far enough away that it's not an issue however these bikes are very small and asked to do quite a bit of work, it blocked just enough wind to where it just wouldn't cool off fast enough when I was at high RPMs for a long amount of time. After removing the bag my temperature gauge reads no higher than 80 degrees C if I've been on the highway for a long time, and I stick around 70 to 74 degrees C when I am in the city

Aftermarket accessories on your front forks can cause overheating on the KPM 200, unfortunately I have verified it myself.

Safe riding guys, thanks for all the help!

P.S. sorry for the hate mail Lifan, you do make a quality product.

Lol. It's always something small, and unassociated with anything mechanical. Glad you figured it out. I guess it's time to develop some radiator shrouds to get if you install a fork bag.

ChopperCharles · 12-27-2022, 11:59 AM

Quote:

Originally Posted by KPMRider

FIX!!! Operator error!!!

As many of us know it's really frustrating to be running around chasing your own tail on a mechanical or electrical problem. I figured it out!

These KPM 200s are very small bikes, and as many of us know storage is difficult. I had installed a small storage bag on the front forks. As many of us know when you are behind a semi in town you still get wind, but when you are behind a semi on the highway it blocks a considerable amount of wind. I think the same principle applied here, that small storage bag blocked just enough wind to keep air from flowing through my radiator fins. Last night I pulled out all the stops I installed the thermometer gauge and got a no drip radiator funnel to pull 100% of the air out of the system and after all my repairs were done I had my buddy just point out that the bag on the front might be blocking the wind. To be honest I hadn't even considered that, it seems like it should be far enough away that it's not an issue however these bikes are very small and asked to do quite a bit of work, it blocked just enough wind to where it just wouldn't cool off fast enough when I was at high RPMs for a long amount of time. After removing the bag my temperature gauge reads no higher than 80 degrees C if I've been on the highway for a long time, and I stick around 70 to 74 degrees C when I am in the city

Aftermarket accessories on your front forks can cause overheating on the KPM 200, unfortunately I have verified it myself.

Safe riding guys, thanks for all the help!

P.S. sorry for the hate mail Lifan, you do make a quality product.

I had a similar problem with a CX500 with 650 motor I built. I put a high front fender on it, and that blocked air flow to the radiator. I didn't notice it until the radiator fan blew a fuse (my fault, my wire wasn't properly heat-shrinked where I soldered a splice). The fan was on 100% of the time, and when it failed I overheated. I ended up fabbing some wings to draw the air in from the sides.

While you solved the problem, your fan may still be kaput. It'd we wise to check it.

Also, while this was a simple fix, USUALLY rpm-related overheating is due to a bad head gasket. Combustion gasses leak into the water jacket and superheat the coolant.

Charles.

KPM · 08-10-2022, 08:09 AM

Rule #2 of trouble shooting gremlins, BRING IT TO STOCK SPECS FIRST. Lesson learned.

Teklock · 08-10-2022, 11:25 AM

Quote:

Originally Posted by KPM

Rule #2 of trouble shooting gremlins, BRING IT TO STOCK SPECS FIRST. Lesson learned.

I recommend reading this next.

https://netcult.ch/elmue/HUD%20ECU%2...4%20Manual.pdf

KPM · 08-10-2022, 11:32 AM

His problem is fixed, but this is good info, thank you for sharing.

Atruelybasicguy · 08-13-2022, 04:03 PM

2020 Kpm200 question.
4600 odo
Bogging down when riding at steady speed.
Seems to happen more so after fill up.
Any ideas?

KPM · 08-14-2022, 07:50 AM

Quote:

Originally Posted by Atruelybasicguy

2020 Kpm200 question.
4600 odo
Bogging down when riding at steady speed.
Seems to happen more so after fill up.
Any ideas?

This is a classic sign of plugged tank vent, or in this bikes case a possible failed plugged EVAP system. The lack of air being allowed into the tank is preventing the fuel from flowing. Next time you go on your ride, carry both keys with you. 1 to run the bike, the other to open the gas tank cap to allow the tank to vent WITHOUT shitting down the motor. Ride as usual, when it bogs down, pull over, open tank, reclose after 1-2 seconds, and continue your ride. Report back if the bogging went away for a few minutes.

Atruelybasicguy · 08-20-2022, 03:06 PM

Quote:

Originally Posted by KPM

This is a classic sign of plugged tank vent, or in this bikes case a possible failed plugged EVAP system. The lack of air being allowed into the tank is preventing the fuel from flowing. Next time you go on your ride, carry both keys with you. 1 to run the bike, the other to open the gas tank cap to allow the tank to vent WITHOUT shitting down the motor. Ride as usual, when it bogs down, pull over, open tank, reclose after 1-2 seconds, and continue your ride. Report back if the bogging went away for a few minutes.

Thanks for the info I'll let ya know what happens.

KPM · 08-26-2022, 08:55 PM

Quote:

Originally Posted by Atruelybasicguy

Thanks for the info I'll let ya know what happens.

Just some more info for you. Yesterday I had a fuel smell whenever coming to a stop. Last night, I saw a video on youtube from a gentleman who had a confirmed fuel leak. He ended up tightening the fuel pump bolts. So today I checked my fuel pump, and each bolt took another 1/2 to 3/4 of a turn before hand tight.

1. Do you have a fuel smell once coming to a stop, from a higher speed / revs ?
2. May also want to check your fuel pump hardware. The pump is located under the tank, right behind where the speedometer gauge is. You do NOT have to remove any panels to get to the 4 bolts on it.

indus49 · 08-25-2022, 04:58 PM

I started taking the sides and seat off, but couldn't figure out how to get the air cleaner out. Has anyone here done it?

Falkon45 · 08-13-2022, 07:19 PM

Bogging how? Like it's losing speed gradually, or suddenly losing speed and picking back up?

Are you going uphill? Even slight hills cause these to slow down a bit.

Atruelybasicguy · 08-20-2022, 03:05 PM

Quote:

Originally Posted by Falkon45

Bogging how? Like it's losing speed gradually, or suddenly losing speed and picking back up?

Are you going uphill? Even slight hills cause these to slow down a bit.

No; flat grade, uphill, downhill, happens when holding steady speed.

08-08-2022, 10:12 AM	#3
KPMRider Join Date: Jul 2022 Posts: 7	FIX!!! Operator error!!! As many of us know it's really frustrating to be running around chasing your own tail on a mechanical or electrical problem. I figured it out! These KPM 200s are very small bikes, and as many of us know storage is difficult. I had installed a small storage bag on the front forks. As many of us know when you are behind a semi in town you still get wind, but when you are behind a semi on the highway it blocks a considerable amount of wind. I think the same principle applied here, that small storage bag blocked just enough wind to keep air from flowing through my radiator fins. Last night I pulled out all the stops I installed the thermometer gauge and got a no drip radiator funnel to pull 100% of the air out of the system and after all my repairs were done I had my buddy just point out that the bag on the front might be blocking the wind. To be honest I hadn't even considered that, it seems like it should be far enough away that it's not an issue however these bikes are very small and asked to do quite a bit of work, it blocked just enough wind to where it just wouldn't cool off fast enough when I was at high RPMs for a long amount of time. After removing the bag my temperature gauge reads no higher than 80 degrees C if I've been on the highway for a long time, and I stick around 70 to 74 degrees C when I am in the city Aftermarket accessories on your front forks can cause overheating on the KPM 200, unfortunately I have verified it myself. Safe riding guys, thanks for all the help! P.S. sorry for the hate mail Lifan, you do make a quality product. Last edited by KPMRider; 08-08-2022 at 10:14 AM. Reason: Misspelling
	3

08-13-2022, 04:03 PM	#9
Atruelybasicguy Join Date: Aug 2022 Location: S.c. Posts: 3	Engine bogging down. 2020 Kpm200 question. 4600 odo Bogging down when riding at steady speed. Seems to happen more so after fill up. Any ideas?
	0

08-25-2022, 04:58 PM	#13
indus49 Join Date: Aug 2022 Posts: 4	Has anyone replaced or cleaned the air filter yet? I started taking the sides and seat off, but couldn't figure out how to get the air cleaner out. Has anyone here done it?
	0

08-07-2022, 12:16 PM	#1
Falkon45 Join Date: Aug 2020 Location: Savannah, Ga Posts: 759	Hey, another question. What grade of had are you using? Do you get any symptoms of detonation? Basically, the engine will randomly sound like popcorn in a microwave in multi cylinder engines. Not sure what it would sound like in thumpers. Have you checked or changed your plug? Right now, with everything you've done, it sounds like you might be lean, and the cooling system can't keep up.
	1

08-07-2022, 07:09 PM	#2
JimS Join Date: Jul 2022 Location: New Mexico Posts: 81	I've been just over 700 miles on my KPR in the heat of New Mexico (over 100 every day) with no issues. I wouldn't run thicker oil to try to reduce Temps unless you have changed bearings to increase clearance for some reason. Sounds like you may have got a bad apple.
	0

08-10-2022, 08:09 AM	#6
KPM Join Date: Jun 2022 Posts: 21	Rule #2 of trouble shooting gremlins, BRING IT TO STOCK SPECS FIRST. Lesson learned.
	1

08-10-2022, 11:32 AM	#8
KPM Join Date: Jun 2022 Posts: 21	His problem is fixed, but this is good info, thank you for sharing.
	1

08-13-2022, 07:19 PM	#14
Falkon45 Join Date: Aug 2020 Location: Savannah, Ga Posts: 759	Bogging how? Like it's losing speed gradually, or suddenly losing speed and picking back up? Are you going uphill? Even slight hills cause these to slow down a bit.
	1