Massimo 500 starts then dies. When engine is cold, it will cran

Massimo 500 starts then dies. When engine is cold, it will crank and start right up. Maybe a few seconds. Pump is working8-10psi if I had to guess Nov 18, 2020 · I then decided to do a bottom end just so I would have a fresh motor. Replaced TPS and adjusted cable, drained entire fuel system as well as pulled fuel pump out and cleaned bottom screen very well. 1) Still nothing. Good luck! See relevant content for offroadlounge. You can't get it to stay running or rev above an idle at all. It will start and idle for a few seconds and then die. I have learned if I hold the key for a few seconds it will remain running. Its been stalling for a few weeks now but the low power just started today. Extended crank on a cold start, stalls intermittently (usually after stopping from decent speed), and feels like its down on power. After about 45 mins it will start again. Please help. Won't idle. I changed the fuel pump but that didn't work. It’s running poorly and stalls frequently. I stopped over one day to look at it and saw that it had codes flashing on the dash; 505, 3 Oct 8, 2023 · Verify fuel level and quality – An empty or near-empty fuel tank will leave the engine lacking the gasoline needed for ignition. Initial complaint was it would start and run for about 10 minutes and the just die. Oct 31, 2014 · 2006 500 X2 EFI H. Feb 14, 2021 · 2016 Msu700 starts runs a coupl min/warms up dies and wont re-start. com. Please turn off your ad blocker. My Massimo is getting fuel, fire, compression. Dec 23, 2019 · So I have a 2018 Massimo 500 and bought with 100 miles on it and only 400 now. Turns over and fires for couple seconds (maybe 2-3 max) and diesgoosing throttle doesn't help. Take the air filter off and shoot a little carb cleaner or starting fluid into the intake. When I got it back together again it was still the same. 5 mm belt, Purple Secondary Spring, 21 gram weights, weight covers reduced to 29 mm diameter and a 2 mm Cut Cam Plate. COOP45 Primary, 1. If it starts, then problem solved. Massimo UTVs are vulnerable to serious engine problems, such as poor compression, misfiring cylinders, and stalling. Valve or Customer: I have a side-by-side vehicle with a 500cc engine that has only 49 hours of use. I’ve drained the old fuel and replaced it with fresh fuel, adding a can of Seafoam to the new gas. If you find the coil very warm, then I would use some freeze spray, which is available at auto parts stores. Not a clue as to what would cause this or how to fix it?” By JohnnyB on utvboard “My Massimo 500 will I’m having some trouble with my UTV with a 500cc efi engine. Just spray a small amount on the coil, then try to start the bike. Check fuel level and refill if needed. I'm really frustrated! I've replaced the fuel pump, fuel injector, fuel lines, fuel filter, and cam. Green 14" STI Wheels-26" Mud Trax X/L's 2500# polaris winch If it runs for a few minutes then dies , then starts up after 10 minutes , I'm Jan 20, 2023 · Most Common Massimo UTV Problems. I noticed towards cooler weather it wasn’t idling and then just not running good at all. Mar 28, 2013 · Jim, Fast Green Convertible "06" 660 on 26" BH OG's with Stock Wheels. I have a Massimo MSU 500. This just happened one day while riding. Sep 4, 2011 · Feel the coil just after the bike dies to see how warm it is. Here is what I've tried Cleaned throttle body Checked fuel pressure (51 PSI exactly) Oct 21, 2023 · Ok guys, my turn Working on my neighbors 2017 Massimo MSU-500. It has worked and ran perfect. Engine Problems. If I give it any gas, it bogs down and dies, making it undriveable right now. When I turn the key, it starts up but as soon as I let go of the key and it turns back, the 400 dies. I have replaced spark plug. What am I missing? Has Apr 21, 2023 · Strange problem. But after 15 seconds it will slowly idle down until it just dies. . 5 mm shim, -1. Feb 4, 2021 · If you truly have good spark and fresh fuel then try this quick trick. When I reinstall the injector it won't start. things done - replaced the ignition coil replaced the plug checked cord for voltage. You have a valve issue or a compression issue. com Oct 2, 2023 · If you own a Massimo, at some point you may experience sputtering, even to the point that the engine will sometimes stall while at idle. Drained gas cleaned tank went to a Rec fuel. Installed inline fuel filter. Fuel Injector. Customer: Working on a 2018 Massimo msu500 utv. TPS. (It’s not burning the fuel) 2) Motor starts then dies. If the gas has been sitting for over a month, drain the old gas and add fresh 87+ octane gasoline to provide the optimal air/fuel mixtur Nov 19, 2011 · 2011 Sportsman 500 H. Here are the ten most common Massimo UTV problems, along with some tips on how to fix them: 1. Starts up then dies out. You’ll need to check the spark plugs and air filters to fix these issues. If it doesn't start, then it means more troubleshooting. It's a 2016 model. Okay if I pop the injector off of the intake, the engine will run till the fuel that was injected in the cylinder is gone. The Fuel Injector is most See full list on offroadhandbook. Customer: I have a Massimo 500 UTV that idles perfectly and starts up easily, but it produces a little blue smoke at startup. For many past fuel-injected Massimo UTV models, there’s no inline fuel filter, only a screen. O. He replaced the fuel pump and still had the same issue. Injector is working. The two main causes of this in Massimo UTVs are the fuel injectors and the throttle bodies. Injector is spraying good. Mar 7, 2024 · Not the actual starting of the engine but to keep it running. Then crank the engine over. Idle air control valve. xvgmx tlwabemo hwsm juzio migxig fazuq qknotosno ymgxr zcgvjm fto