Looking for motor for Qlink Frontrunner 500
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By Fishing Wiskers
Top speed is 30mph on flat grass ground. but it will not go up minor hills forward or reverse without a runing start. If you start at the bottom of the hill machine will stop about 1/2 way up. I have the engine cover off and you can see the outside of the drive clutch will stop spining., and the engine does bogg down some. Dosent matter if engine is cold or warmed up. Seat belts are connected. Fuel is clean
I am the 5th shop to look at it and different shops have replaced the fuel pump, injector, ign coil, wet clutch,
I am not sure how to check for codes with this machine, can anyone teall me how to do it?
Compression with hot eng is 145, valves adjusted to .005 with a cold engine. Dash shows 426 hours
I am not convinced it's an engine problem
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By Browner010
Recently I had an overheating issue on my 2022 Coleman Outfitter 550 (Hisun UT550) and to check to make sure it was fixed I took it out for a ride around the block. After a couple cycles on the LED coolant meter, I took it for a couple mile ride and on my way back I heard a loud metallic snap then a grinding noise. It was still able to move under its own power but very slowly. I was about 2 blocks from the truck so 'I limped it home and up onto the trailer. I know I need to tear it apart and look for what broke, but anyone have a guess as to where to start? I'm seriously getting tired of this damn machine! 750 miles on it and already replaced the belt, wet clutch, primary clutch, clutch roller weights among a few other things. Seriously, this friggin machine has spent more time on the lift than on the road. I thought I bought this new because it was from the owner of a tractor supply, but he registered it under the stores name making me the 2nd owner voiding any and all warranties.
Any Ideas what to look for would be appreciated.
Thanks
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By owencole15
Massimo 500 will only crank when I jump solenoid with screwdriver cranks right up and runs great. But won’t start with key doesn’t do anything when I turn the key. Only thing it does is power everything as in dash and fuel pump then have to jump solenoid to crank up and drive.
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By Robby
Hello, I have a 2013 500 utv hisun. Was running ok and cut out while parked. Bike will not start now. It turns over, but won't fire. I have no spark and no fuel. I replaced fuel pump, ignition coil, spark plug, cdi, voltage rectifier and all the fuses and relays. Could bad stater cause no fuel because I can't hear the fuel pump priming. Any info on where to start looking for problem.
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By aefron88
This post will explain how to hook up your PC to the ECU of a Hisun/Coleman/Etc UTV to be able to read error codes & engine parameters for troubleshooting purposes.
This is applicable to all small engines using the Delphi MT-05 ECU. This should cover all fuel injected Hisun models, as well as various other Chinese FI engines, as the Delphi MT-05 ECU seems to be the favored ECU solution.
Even though we get actual engine error codes to display on the dash, sometimes we have “pending codes” (not yet confirmed by the ECU) or other intermittent issues that are hard to diagnose, for example a poorly connected sensor that may give intermittent false readings, or a sensor that’s putting out bad date, but not bad enough for the ECU to realize.
The setup requires 2 cables, which are available for around $25 combined, a PC with a USB port, and some charityware software called “HUD ECU Hacker”. This gives the same functionality as the $300 dealer code scanner for a fraction of the price.
In searching I found info about HUD ECU Hacker, but I have yet to see info anywhere about how to hook it up to a Hisun, so I took the leap and bought some cables, and made it work. I will show a step by step of how to do so in post two.
I will be breaking this down into 2 posts:
Delphi ECU Info & Overview (This post) System setup & use Delphi ECU Info (Skip ahead to the next post if your eyes glaze over technical details)
The Delphi MT-05 ECU was developed to allow small engines to use fuel injection. A fuel injection system requires feedback from various sensors to operate efficiently. This feedback allows the adjustment of ignition timing, fuel injection volume, etc to efficiently and cleanly produce the most power possible from a given engine.
The MT-05 ECU has a number of sensors that are required for proper functioning including; Coolant temp, crankshaft position, intake temp, intake pressure, exhaust O2, throttle position, as well as some other optional sensors that are used on more complex vehicles.
From the sensors the ECU adjusts: Fuel injector timing/pulse, Idle air control valve, and ignition coil
The Delphi MT-05 puts out diagnostic data, however it is not ODB2 like a modern car, where is where it gets tricky reading it. There are three options, there is an old 16 bit piece of software Delphi has that is not able to run on a modern computer, there is the motorscanner tool for dealers ($300), or there is freeware HUD ECU Hacker with the proper cables.
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