Search Results for ‘efi’

I am currently working on a sportsman 2016 450 H.O. EFI that will idle for about a minute then shuts off. ATV only has 71 hours. Its worse after the engine warms up. It came in barely running & had been sitting for awhile so drained the gas, changed the spark plug, and changed the injector it...

So my battery was dead when I went to pull it out for first time this year. Machine has under 500 miles on it. Tried jumping it, turns over but wouldn't fire. So I pulled battery and charged it. Reading 12.8 at battery. Turn key and the pod lights up and heard fuel system prime but wouldn't...

Hi everyone, new to the forum but long time reader. I am looking for some advice on some fuel injector issues on my 2011 Sportsman 800 EFI. A few years ago I had an injector fail and stick wide open causing gasoline to wash the cylinder wall and wipe out the rings. I rebuilt the top end and...

2014 polaris sportsman 570 efi, got my atv out to warm it up after sitting a few months. Has Gass and a full charge on the battery. Started it with only a little trouble. It had been a while. Ran it for about 5min on idle and it shut off. Now the starter turns it over but the engine does...

Does anyone know if a Polaris sportsman 500 EFI would need at least 12.5 volts to run properly? I have read before that EFI models need at least 12.5v to start, but does it need at least 12.5 volts to run properly? I can get my Atv started with a booster, but then it stalls right after. I also...

My Ranger has recently started acting up. I believe some water got into the fuel system last week. Tank has been drained and refilled but performance issues have remained. Lag, backfire and will occasionally stall out but will restart after a minute or so. Feels like ignition has been turned off...

Hey everyone, I’ve been following the site for awhile mainly old Polaris tech and trying to self diagnose my ATV. Installed new Tbap harness from OTB. Anyway, I’ve been having this issue with my ATV for a little while and I’m having a hard time figuring out what it could be. My idling rpm is...

2005 Sportsman 800 EFI Have ongoing issues I cannot resolve. Replaced broken fuel pump and machine was running great. After two weeks of good use, while idling in my driveway it killed and wouldn't restart. Now will start and run for a few seconds but kills as soon as I touch the throttle...

The ATV starts up and idles fine for as long as you’d like it to. If you very carefully and quickly feather the throttle ever so slightly you can build RPM up around 13-1400. But if you try to easy the throttle in it will shut off. Pulled the plugs out and unplugged the fuel pump and cranked the...

G'day All, Have picked up a sportsman 500, believe it to be the 2007 deluxe efi model. Having trouble getting power to the fuel pump and injector and was wondering if there is any way to test the ECU and PDM before buying new. Ideally want to hear the motor running to know if its worth...

I got a 07 sportsman efi the fan comes on when it wants to not when it should which cause me to over heat at slow speeds and I got to turn the key x5 to the on position to get the fan to turn on I got a new thermister when I unplug it the fan runs I swapped the relays nothing I jumped the relay...

I have a sportsman 570 and when I attempt to start it in the cold it will start and raise to 950-1100 rpm than stalls. You try it again and the same thing for ten more tries and if you give it throttle for 5seconds it runs fine. Some times it will randomly start fine in one of the cranking...

Within the last month my bike has died at idle. It doesn't matter if its as soon as I start the bike or after I've been riding it for an hour. It takes off as it should and seems to ride fine under throttle at all positions except idle. It also makes a "puff" sound before dying almost like a...

Greetings, Easiest way to ask question: On the MAP Sensor pigtail plug, what color is in the middle? Detailed way to ask: Two of three wires (orange and purple) on the MAP sensor pigtail have corroded and broken off the pins of the connector. The yellow wire is in tact. I need to know what...

Hello all, My son's 2017 110 EFI started to become harder and harder to start. Once started seems to run fine for the most part. It seems to be flooding out at start up as you can smell gas heavily at the exhaust. Would a dirty injector cause this issue if it were stuck open? Has good spark...

Hey guys, new to the forum and a new Polaris owner. I just bought this 05 Sportsman 700 EFI. I'm having some issues with the idle running very rough. It constantly backfires from the air intake. Sounds almost like popcorn. Any help would be greatly appreciated. Currently I have a can of Sea Foam...

A few days ago I got a steal on my second Polaris, a 06 500 EFI with just over 2500 miles, it was only $1000. The first day it had a few issues but was overall great. The next day it would start and idle nicely, but as soon as you touch the throttle it dies. I pulled the plug and it is soaked in...

HI All, As mentioned in the new member post I bought a used 2006 sportsman 500 EFI. Bought it knowing of issues it had but the price was right so I figured why not. Last time I worked on a machine was a 98 xplorer 2 stroke. so I have a few questions, my thoughts and followup. Anything you can...

Hey guys. I have a 2006 Polaris Sportsman that have been fighting for two years now. I have had a lot of issues with this ATV and do not know what else to do. I have always had an issue with getting it to run for more then a couple days :motz: I have just replaced the t-bap as I read this is...

battery is good, will crank just not fire. tired starting fluid and nothing. ran perfect last week. took spark plug out and sparked first crank then nothing. every time the key is shut off then back on it will spark once. then nothing. any ideas or tests?