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Old 01-02-2009, 01:39 PM   #1 (permalink)
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can i eliminate oil injection

i have 91 jag afs and was wondering if i can pre-mix my fuel and get rid of the injection system and what i have to do if i can get rid of it?
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Old 01-02-2009, 01:57 PM   #2 (permalink)
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I'm pretty sure you can. Did you burn it out? I'm sure others would know more than i but i would fix it its a pain to premix. I wonder if there are any safty switchs in the oiler that you need to worry about?
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Old 01-02-2009, 04:34 PM   #3 (permalink)
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I'm not sure on the Jag engine, but on the AC engines I have had, the oil pump runs off a central gear on the driveline. If the injection is removed, the gear no longer is lubricated, and will heat up and fail. If you don't trust the injection, you can run an oil line from the oil tank to the pump as normal, then run the line back to the tank to dump the oil back in the tank. No oil is injected, but the pump keeps happy. Some have done this to reduce weight, they can go to a much smaller oil reservoir that weighs less and then just premix the fuel.

Your call...
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Old 01-02-2009, 04:39 PM   #4 (permalink)
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You can run premix if you want, but it's a pain. I don't know about your particular sled, but I've seen others pull the pump out and put a oil injection cover where the pump came out. I think you could probably just disconnect the cable at the oil pump and plug the hose coming from the tank.
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Old 01-02-2009, 04:41 PM   #5 (permalink)
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I'd go with BC Dan's idea. He's the man, must have posted while I was typing.
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Old 01-02-2009, 05:09 PM   #6 (permalink)
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thanks for the info fellas, can u tell me the best or quickest way to test it to see if its working properly? thanks
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Old 01-02-2009, 05:19 PM   #7 (permalink)
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Take a new fuel line and put it from the inlet on the fuel pump to some premix. disconnect the oil lines at the carb block this area off so no air goes into the carb and start her up. At idle it should drip out slowly as you rev it up it will increase.
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summer ride
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old rides
96 SkiDoo Formula SLS 500 -sold 1/31/13
81 AC Jag 4000 3500 miles sold 1/13/12
74 MotoSki Futura 340 2200 mls sold 6/15/12

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Old 01-02-2009, 06:27 PM   #8 (permalink)
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ok i went out to my sled, this is what i got. i have one main line going from the bottom of the oil tank to small pump mounted at the bottom of the block. this pump in turn has two clear lines one running to each flange at each cylinder. this is where it must mix with the fuel? this is my first sled so bear with me on the questions. thanks
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Old 01-02-2009, 06:34 PM   #9 (permalink)
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That is correct, it mixes at the intake behind the carbs.
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Old 01-05-2009, 10:09 AM   #10 (permalink)
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Curious, why is it that many people take out the oil injection? Are they troublesome??? Is it that they are not able to be calibrated or not reliable??? To me, premix can be a pain especially when on long runs.
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Old 01-05-2009, 10:29 AM   #11 (permalink)
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Quote:
Originally Posted by ponchonutty View Post
Curious, why is it that many people take out the oil injection? Are they troublesome??? Is it that they are not able to be calibrated or not reliable??? To me, premix can be a pain especially when on long runs.
I think that many do it because they heard that somebody that somebody that somebody's friend had a problem with their sled and decided that it was the oil pump that caused their sleds engine to fail so they stopped using it.

There are actual cases where the oil pump has failed, but it is rare.

Also, I agree, if you don't have to mix, why would you want to. It's a lot nicer to be able to just pull up to a gas pump and fill up, just remember to check to see if you need to top off the oil tank as well.
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Old 01-05-2009, 11:04 AM   #12 (permalink)
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Quote:
Originally Posted by RJ Gleason View Post
I think that many do it because they heard that somebody that somebody that somebody's friend had a problem with their sled and decided that it was the oil pump that caused their sleds engine to fail so they stopped using it.

There are actual cases where the oil pump has failed, but it is rare.

Also, I agree, if you don't have to mix, why would you want to. It's a lot nicer to be able to just pull up to a gas pump and fill up, just remember to check to see if you need to top off the oil tank as well.
X2 with RJ
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1999 SkiDoo Formula Z 500- mine

summer ride
2000 XL1200 Sportster customized

old rides
96 SkiDoo Formula SLS 500 -sold 1/31/13
81 AC Jag 4000 3500 miles sold 1/13/12
74 MotoSki Futura 340 2200 mls sold 6/15/12

Sold 12/19/9

Sold 8/19/9

"What ever you do don't eat the Calamari"
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Old 01-05-2009, 05:36 PM   #13 (permalink)
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Thanks RJ. It seems more like of what I was thinking anyways. Hey, on that '99 zr500 the guy is set on $650 and won't go lower. He said that he will clean the carbs/tank out and get it running for me. Actually he didn't want to sell it this week but after the weekend because they plan to bring it for an extra person on a sled trip up in Michigan. I told him I'd give him $700 today and only charge $200 for rental with a $500 deposit He did chuckle but for some reason he didn't go for it.
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Old 01-06-2009, 12:45 AM   #14 (permalink)
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Well, if he's going to do all that to make sure that it's good, I guess the price ain't too bad.
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'90 Wildcat Project in progress.

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1980 AC Pantera (donor engine to the 90 wildcat)


http://www.dcdrifters.net/


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