Oil injection pump adjustment

[Merlin]

All,

I've searched as many threads as my attention span would allow regarding the obvious need to increase the oil delivery of the injection pump on the Pros.............

What settings have you used with what results??? I.E. How many degrees of the arm or even better yet, turns of the adjuster past the factory mark to yeild what results/ratio???

I realize the oil delivery is proportional to throttle position so the calculated ratio at which it is injected may vary from one tank of gas to the next depending on snow/riding conditions but I'm just looking for some real numbers & opinions to digest before I "turn the screw"

Any help would be greatly appreciated...........

Thanks in advance,


Glen

 

[Demo250]

Did you manage to find this one?
http://www.snowestonline.com/forum/showthread.php?t=277595

Has some good info in it.

 

[Merlin]

Thanks,

It was a good post regarding the adjustment of the pump but it was lacking any numbers or results................

I'd prefer to have feedback from those who have operated their Pro for awhile with the pump "turned up" to verify what their results were............Just to get a consensus on what a good baseline setting would be & if there we're any negative results, etc...............

 

[tard]

I would reccommend checking the pump to see if it is at the factory mark first. Mine needed 4 turns to get just richer than the factory setting.

 

[Merlin]

Not sure if confirming the oil pump adjustment is part of a PDI on a new machine but if it is, the dealer must've skipped it???

Did you happen measure your oil consumption prior the making the adjustment & after???


Thanks,


Glen

 

[05900]

Seems to me stock pump is a fixed orfice timed delivery pump adjusting it will allow a certain amount earlier or later....will add some to tank also!

 

[Merlin]

Seems to me stock pump is a fixed orfice timed delivery pump adjusting it will allow a certain amount earlier or later....will add some to tank also!

Oh, how did you come to that conclusion???

I've always wondered what actually makes these pumps "tick" as I've never seen one apart before, however I'm pretty sure the amount of oil they deliver is proportional to the actuator/control arm position..............If it were equipped with a fixed orfice, adjusting the arm would have little effect on the overall oil delivery & that would be contrary to what I've seen on any other oil injected engine.............I believe the actuator/control arm comprises the "adjustable orfice" portion of the pump................

Maybe someone else can step in & clarify???

BTW, adding oil to the fuel for an engine only equipped with a port injector won't "do" much for bottom end lubrication................


Thanks,

Glen

 

[Reg2view]

Most dealers will not touch the pump, they come from the factory preset and marked (yellow dye). They do seem to range both high and low from the factory. I have mine set about 5 degrees above the pump scribe, last calculated was just under 40:1 (like 39:1). Happy with it, no fouling or VES issues.

 

[Merlin]

I have mine set about 5 degrees above the pump scribe, last calculated was just under 40:1 (like 39:1). Happy with it, no fouling or VES issues.

Thanks for the info.!


How many miles/kms. on your machine since you made the adjustment???


Thanks again,


Glen

 

[Merlin]

ttt

 

[Machinedoc2]

Oil Pump Issuse

FYI,, Thought I chime in with the following as I am now also interesting in oil pump settings. I have about 110 mile on my 12 pro and first the control arm came off the oil pump after 60 miles, next the oil line "FELL" out of the oil pump housing, 15 miles into the ride, The "knerrel" they have on the brass fitting just not quite large enough dia. ( Remove and Replace motor), Next the plastic "clevis" on oil pump end of control arm breaks,, Remove and replace airbox. If I didn't like the ride so much it, The sled would have to go "somewhere"

 

[Merlin]

FYI,, Thought I chime in with the following as I am now also interesting in oil pump settings. I have about 110 mile on my 12 pro and first the control arm came off the oil pump after 60 miles, next the oil line "FELL" out of the oil pump housing, 15 miles into the ride, The "knerrel" they have on the brass fitting just not quite large enough dia. ( Remove and Replace motor), Next the plastic "clevis" on oil pump end of control arm breaks,, Remove and replace airbox. If I didn't like the ride so much it, The sled would have to go "somewhere"

That sucks! I guess that oil system must've been installed on a "Monday" or a "Friday"???

 

[sleded800]

Everybody should be checking their Oil pump on every Pro, I recently bought two 011 Pro's, 155 and 163, decided after reading posts about the oil pump adjustment thing and checked where my oil pumps were set at and the 163 took 3.5 turns just to get the pump arm scribe to meet the pump housing mark and the 155 took 3 turns to do the same. I definately don't want my sleds under oiled. I buy the best oil I can for these sleds why would I want to meter it at below the recommended levels.

 

[Reg2view]

Thanks for the info.!


How many miles/kms. on your machine since you made the adjustment???


Thanks again,


Glen

About 220 mi.

 

[Trxstr]

250 Miles on my sled and all this oil pump talk is worrying me. I have gone through about 2 litres of oil in 250 miles. Can't we just buy these things and ride them anymore??? I do NOT want to touch the adjustment screw or mess with it. Yes I love maintenance but this should all be done from Factory or at CERTIFIED Polaris Dealers.... they are certified for a reason... My 2 Cents.

 

[Merlin]

the 163 took 3.5 turns just to get the pump arm scribe to meet the pump housing mark and the 155 took 3 turns to do the same.

Thanks for the info.,


Glen

 

[Merlin]

this should all be done from Factory or at CERTIFIED Polaris Dealers.... they are certified for a reason... My 2 Cents.

It should be set correctly when it leaves the factory & I agree, it most certainly should be confirmed at the dealer before it is released to the customer...........

If confirming the oil pump adjustment is not part of the dealers PDI, it ought to be!!!

 

[gman086]

It should be set correctly when it leaves the factory & I agree, it most certainly should be confirmed at the dealer before it is released to the customer...........

If confirming the oil pump adjustment is not part of the dealers PDI, it ought to be!!!

It's because they're trying to hit EPA emission regs and has nothing to do with what's best for motor longevity!

Have FUN!

G MAN

 

[sleded800]

I for one, as a person that owns two 800 Pro's found these threads on the adjustment of the oilpump to be of concern to me. I agree that the Oil pump postion should be a priority at factory release of the sled if it's not a priority at the PDI of the sled at the dealers end. It should be be someones concern before you take delivery of a new sled. But from what I have read it seems that most of the pump arm positions are being delivered metering definately on the low side ( in the range of 55-1/60-1) whether it's to meet EPA regulations that can be debated. It's up to the consumer it seems to make his own decision about what is best for his own sled that he owns. The least that should be done is you should varify where the pump arm is set right now on your Pro!! Whether you have warranty on your sled is not the issue, it is stated clearly in the Polaris service manual where and how the Oil pump arm should be set at in relation to the pump body, that has also been covered in other threads here. If the pump arm set is out of spec and you don't want to change it then take it to your dealer and make them change it! Do it. 60 to 1 does'nt work for me!

 

[Merlin]

It's because they're trying to hit EPA emission regs and has nothing to do with what's best for motor longevity!

Have FUN!

G MAN

To clarify your statement, the reason some customers are receiving their machines with the oil pumps anywhere up 3.5 turns "out of adjustment" on the low side is because Polaris is attempting to meet emissions regulations???

If that we're the case I wouldn't think they'd even bother installing calibration markings on the oil pump assembly at all..............

It would stand to reason that all of their oil pumps are manufactured to deliver the same amount of oil throughout the entire span of control arm movement, give or take an insignificant amount, and the alignment marks are their calibration for this particular application producing emissions within required EPA regulations.............

I wouldn't expect that Polaris would test the emissions on each & every machine & adjust every oil pump to achieve a desired result............or do they???

Thoughts???

Glen