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By KWinTX
I just bought a new 2024 Hison 550 Stryker 2 months ago. this is the second time I have had this issue. It only has about 20 hours on it. The last time it happened we took it back to the dealer. it was a fuse. Since we live three-hour time driving there and back. I would like to find another solution if possible. I have tried all the fuses that seem to have anything to do with starting. Currently checking the battery. The battery is new. it came with the unit. It is probably 6 months old. the UTV has all power to everything electrical. lights turn signals and radio all work. When trying the key to start . it is 100% dead. as in it doesn't even click. There is a low whirring like the fuel pump is turning on though. The Unit was running and driving just fine. we shut it down for the night. The next morning my wife found it in this condition. Thanks for any Ideas or solutions??? Otherwise, it goes back to the dealer tomorrow. Just hope I didn't buy a lemon. Great little UTV when it does run.😅 anyone else ever have this Issue..?
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By Ed Michael
My older LM 650 is blowing fuel into the air cleaner. Any idea on what would cause this? It is the Suzuki motor. Not sure what model year it is.
Thanks
Subaru SxS.mp4 -
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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By SayHiToRambo
08 trooper 1100
Bit of background. First the machine would take for ever to start. So I adjusted the valve shims into spec and made sure the timing is correct. Starts perfectly now.
now it fluctuates on idle. Bogs down, Revs up, repeat. I noticed the fuel pressure drops from 60psi to 20psi while that happens. It also bogs down at the lower end of each gear, higher rpm seems to be fine. Seems to struggle under load. In neutral it revs up perfectly.
brand new fuel pump, fuel filter, gas. I noticed on the fuel pressure regulator there’s that vacuum nipple, it’s not attached to anything and I’m not sure where it would go. Possibly the problem?
Another issue is the tip off the end of the exhaust is broken off, sensor is still attached and connected. Could that cause these issues?
my next plan was to look into the pressure regulator and voltage to fuel pump while driving. Is there anything I’m missing or any ideas you guys have?
thanks!
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By Texjpr
2002 ranger 500 4x4 stopped running and wouldn't restart. Service manual wiring diagram helped identify the hub safety switch as the culprit. Using jumper wires to bypass switch allowed the engine to start and run normally. Inspection of switch showed melted epoxy and a strong smell of burnt electrical. Unable to find replacement part either used or new. Is there a work around other than jumper wiring?
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