need help 2011 polaris 850 sportsman touring - Polaris ATV Forum
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post #1 of 25 (permalink) Old 08-25-2019, 06:05 AM Thread Starter
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need help 2011 polaris 850 sportsman touring

has anyone removed their fuel injectors to clean them?
if there clogged, what is the best method?
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post #2 of 25 (permalink) Old 08-25-2019, 07:42 AM
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Simple - if the injector is clogged, replace it with a new one - they can't be cleaned adequately with solvents or additives.

How do you know they are clogged? According to all the sources I have available, the only way to clog an injector is to run dirty or unapproved fuel without a fuel filter, use sloppy or careless service procedures or leave the vehicle unused for a long period of time and injectors clogged from disuse will clean themselves if the engine will run and all the old fuel is drained, fresh fuel is in the fuel tank and the engine is operated normally for a period of time.

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post #3 of 25 (permalink) Old 08-26-2019, 05:37 AM Thread Starter
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yes, do agree with you
you latebird have been guiding me thtough this stupid machine,lol
i guess going to have to take your advice,and biting the bullet andtake to a service polaris center
dont really have the money, and ill always have tried to fix things on my own.
just a refresher,
ran it low on fuel, didnt run it out though.
few days later, put 3 gallons gas it it. hasnt started since
bought fuel pressure kit-40lbs with key on, 43 lbs while cranking
took off output line on top of fuel pump, with key on pumped gas for 3 secs, cranked it and pumped good stream
took plugs out, left hooked up,sparking against ground.
after struggling getting fuel rail unhooked, had to remove all that manifold below it to get to the two bolts that mounts the fuel rail
cranked over and looks like both injectors spraying fuel while cranking, i mean not a sh--t load, but spraying, yet no start
spray starting fluid in breather hole, it freaking starts!!!
im lost
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post #4 of 25 (permalink) Old 08-26-2019, 05:47 AM
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Fuel pressure sounds low!!! 55psi is what it takes to my knowledge!!

2011 SportsmanŽ 800 EFI
GURU front brush guard
GURU rear brush guard
Polaris front lock n ride cargo box
Polaris rear rack extender
Warn RT 3.0 winch w/amsteel synthetic line
Viper aluminum haus fairlead
Polaris front spring adjusters
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ITP T-7 beadlock 14" w/OMF inner rim guards
Maxxis big horn 2.0 26x9 front
Maxxis big horn 2.0 26x11 rear
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ODI rogue 130mm grips
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Highlifter tire sealant (rear)
CTEK 3300 battery maintainer
added 7 zerks
beefed up wiring harness
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ROTOPAX 1gal. + 2gal. gasoline can
Jccapri bushing kit
Kolpin Over Fenders
Rigid Industries E-Series 10" flood
Walker Evans struts
NGK Iridium's (2,500 miles on Champion's and they looked great!)
Odyssey Extreme battery PC545

2018 SportsmanŽ 570-T
2019 AlumaŽ A8818
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post #5 of 25 (permalink) Old 08-26-2019, 07:15 AM
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Needs 58 psi




https://www.highflowfuel.com/i-22935...s-2204401.html

D

Last edited by Deucer; 08-26-2019 at 01:20 PM. Reason: Edit
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post #6 of 25 (permalink) Old 08-26-2019, 08:51 AM
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Yep, just pumping is not enough. It MUST have the right pressure or you have nothing. It takes a good pump AND pressure regulator to have correct pressure. I suppose it can happen but I've never seen an injector needing replaced on one of these machines.
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post #7 of 25 (permalink) Old 08-27-2019, 04:21 AM Thread Starter
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i got a copy of a 2011 year model-850cc service manual in pdf from this forum, and it said i believe 44psi
so im lost
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post #8 of 25 (permalink) Old 08-27-2019, 05:01 AM
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Quote:
Originally Posted by rdallasc View Post
i got a copy of a 2011 year model-850cc service manual in pdf from this forum, and it said i believe 44psi
so im lost
Hmm, I don't know about the earlier model 850's. I'll do some looking later today. I know my old 800 is 42 I think but my new 1000 is 58. Not sure when they upped the pressure. I was just saying you can't tell anything by just seeing that the pump is pumping. It and the regulator has to deliver at the correct pressure or you'll have problems.
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post #9 of 25 (permalink) Old 08-27-2019, 05:09 AM Thread Starter
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if you good look for me that would be great,thanks!!
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post #10 of 25 (permalink) Old 08-27-2019, 07:33 AM
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I just checked the 2011 850 manual 9923067 - specifies 43 psi

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