Vacuum port for 919 Scottoiler? - Wrist Twisters
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post #1 of 34 Old 12-05-2015, 11:05 AM Thread Starter
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Vacuum port for 919 Scottoiler?

I have an Scottoiler from a different bike that attatched to a port near the throttle body. Does the 919 have a place for this?

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post #2 of 34 Old 12-05-2015, 11:21 AM
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"T" it in to the FPR vacuum line. Should work just fine .... and when the your chain starts to smell like fuel you know the FPR is on its way out. =)

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post #3 of 34 Old 12-05-2015, 11:49 AM Thread Starter
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Thanks, but that is of no help to me whatsoever.

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post #4 of 34 Old 12-05-2015, 11:54 AM
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We have a throttle body sync vacuum port but it's a bad idea to use them on this bike. Seriously, tee off the existing vacuum piping - we have vacuum going to the FPR and to the air intake flapper.

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post #5 of 34 Old 12-05-2015, 12:58 PM Thread Starter
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OK sounds good, what's the FPR?

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post #6 of 34 Old 12-05-2015, 01:11 PM
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Fuel Pressure Regulator.

There is also a very easy to access vacuum actuated flap in the intake snorkel. A lot of people wire that thing so it's open all the time - you could do that and just connect that vacuum hose to the Scottoiler instead.

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post #7 of 34 Old 12-05-2015, 01:11 PM
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OK sounds good, what's the FPR?
Fuel Pressure Regulator

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post #8 of 34 Old 12-05-2015, 04:03 PM
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I had an oiler with a vacuum operated valve for a while. I tapped into the vacuum line that goes to the flapper where the arrow points in the picture from the service manual below. I tapped in there because the check valve (just to the right of the arrow) could trap vacuum in the line going to the flapper solenoid when the engine is shutoff, which may keep the oil flowing when the engine shuts down.


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post #9 of 34 Old 12-05-2015, 09:43 PM Thread Starter
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I tee'd off near the solenoid and installed everything else before reading the above post. No oil flowing yet, what do I do next?

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post #10 of 34 Old 12-05-2015, 10:16 PM
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Quote:
Originally Posted by Ditch View Post
I tee'd off near the solenoid and installed everything else before reading the above post. No oil flowing yet, what do I do next?
You could just try it like you have it hooked up and monitor to make sure the oil flow stops. Maybe the Scottoiler allows the vacuum pressure to bleed off when the engine shuts down.

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post #11 of 34 Old 12-06-2015, 09:45 AM Thread Starter
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But I'm not getting any oil flow at all. Do I need to do something with the flapper?

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post #12 of 34 Old 12-06-2015, 11:33 AM
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Quote:
Originally Posted by Ditch View Post
But I'm not getting any oil flow at all. Do I need to do something with the flapper?
Did you tap in between the solenoid and the flapper? If so you probably only get vacuum when the flapper is activated which I think is only at certain RPMs.

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post #13 of 34 Old 12-06-2015, 01:12 PM Thread Starter
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Yes, how do I get vacuume at all rpm's?

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post #14 of 34 Old 12-06-2015, 02:21 PM
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Move it to where I showed you in post #8.

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post #15 of 34 Old 12-06-2015, 02:23 PM Thread Starter
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I already cut the darn hose to length.

Rob got it to work, but maybe he cut it where you did as well.

So the check valve is what opens at the right RPM and load?

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post #16 of 34 Old 12-06-2015, 02:59 PM
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Quote:
Originally Posted by Ditch View Post

So the check valve is what opens at the right RPM and load?
The solenoid valve is what is controlled by the ECU to control the flapper. The solenoid valve is between the check valve and the flapper.

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post #17 of 34 Old 12-12-2015, 11:06 AM Thread Starter
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Quote:
Originally Posted by marylandmike View Post
The solenoid valve is what is controlled by the ECU to control the flapper. The solenoid valve is between the check valve and the flapper.
To the left or right of the check valve?

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post #18 of 34 Old 12-12-2015, 11:11 AM
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In the picture in post 8, the solenoid is to the right of the check valve.

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post #19 of 34 Old 12-12-2015, 01:10 PM Thread Starter
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Ok yes but did he tap in to the left or right of the check valve?

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post #20 of 34 Old 12-16-2015, 04:40 PM
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Just get Mike's oiler and you're good to go. I moved mine that I had on the 919 to my Tiger 800 and I'm "set it and forget it"


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post #21 of 34 Old 12-16-2015, 08:33 PM
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Just get Mike's oiler and you're good to go. I moved mine that I had on the 919 to my Tiger 800 and I'm "set it and forget it"


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How's the new Tiger, Todi?

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post #22 of 34 Old 12-17-2015, 08:54 AM
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Hi Mike, I love it. Between the throttle modes (road, off-road and rider custom with sport, rain and various ABS or traction control settings), nice riding position, heated grips, comfort seat, what's not to like?

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post #23 of 34 Old 12-18-2015, 11:52 AM
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Hi Mike, I love it. Between the throttle modes (road, off-road and rider custom with sport, rain and various ABS or traction control settings), nice riding position, heated grips, comfort seat, what's not to like?
Nice. We need to do another road trip in 2016!

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post #24 of 34 Old 01-03-2016, 09:20 PM Thread Starter
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Tapped into the left of the check valve, right where the arrow is and now it won't start. There is gas in it btw, I checked that first

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post #25 of 34 Old 01-04-2016, 03:37 AM
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Quote:
Originally Posted by Ditch View Post
I tee'd off near the solenoid and installed everything else before reading the above post. No oil flowing yet, what do I do next?
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post #26 of 34 Old 01-04-2016, 09:16 PM
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Quote:
Originally Posted by Ditch View Post
Tapped into the left of the check valve, right where the arrow is and now it won't start. There is gas in it btw, I checked that first
Assuming you checked the normal stuff, gas, kill switch, kickstand down and in gear, etc...

If it was fine before you did it, there may be a vacuum leak. I would pinch off the hose going to the Scottoiler and see if it starts. If it does, it's probably an issue with the oiler. If not I would look for leaks where you tapped in.

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post #27 of 34 Old 01-06-2016, 04:31 AM Thread Starter
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Everything was fine before I cut into the hose to the left of the check valve. I removed the T and put it back the way it was and now I missed out on my one chance to ride it for another month.

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post #28 of 34 Old 01-06-2016, 02:12 PM Thread Starter
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Plugs were wet, dried them out and it fired for a sec but only with 1/2 throttle, then it died. I put all the god damn hoses back to stock.

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post #29 of 34 Old 01-06-2016, 06:24 PM
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Regardless of the cause it sounds like it's flooded. If this is the case there is a way to get it started. First, be fully suited up and ready to ride. Next, when you go to start it hold the throttle wide open until it starts. This is a feature called "dechoke", which when the ECU sees the wide open throttle position it cuts the fuel to allow the excess fuel already in the cylinders to combine with copious amounts of air. It will run badly for a couple of seconds and chuff soot out of the exhaust, then start to run normally. Do not try to let it warm up at idle! Put it in gear and take off. This insures the cylinder walls get plenty of oil on them that was washed off by the excess fuel. Be sure to ride it long enough to bring the engine up to normal temperature. That should take care of it.

On another note, I have a Scottoiler that has been on three different bikes over ten years, and when I installed it on the 919 it worked normally for a couple of months then I noticed an instability when holding a cruise throttle. It puzzled me for a time until in the process of troubleshooting I capped the vacuum feed to the oiler and the symptom disappeared. Testing the oiler vacuum feed with a Mityvac revealed a middling leak. Needless to say I retired the oiler. Working on a different method of controlling the feed using the flapper solenoid valve as a direct oil cutoff and using the oiler as a reservoir only. I'll keep you informed.

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post #30 of 34 Old 01-09-2016, 09:30 AM Thread Starter
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Thanks a million Rob, 100% throttle fixed it, didn't even have to ride it. Just had to rev the shit out of the poor thing.

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post #31 of 34 Old 01-12-2016, 07:30 AM
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Quote:
Originally Posted by Ditch View Post
Thanks a million Rob, 100% throttle fixed it, didn't even have to ride it. Just had to rev the shit out of the poor thing.
which is exactly what he advised you not to do since the extra fuel likely cleaned the cylinder walls of oil............

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post #32 of 34 Old 01-17-2016, 07:36 AM Thread Starter
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Did I do it wrong Rob? I tried it how you said and it died when I put it in gear.

Tried again as I said in post #30 and it finally started running on it's own and let it run until the fan came on.

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post #33 of 34 Old 01-18-2016, 06:03 PM
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Quote:
Originally Posted by Ditch View Post
Did I do it wrong Rob? I tried it how you said and it died when I put it in gear.

Tried again as I said in post #30 and it finally started running on it's own and let it run until the fan came on.
On the assumption that the side stand was all the way up there may be a problem with the side stand switch which will kill the motor as soon as a gear is engaged. A common maintenance item for me is when lubing the chain I also give the stand pivot a spritz as well. Even a small amount down will not activate (Or is it deactivate? I don't remember which.) the switch.

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post #34 of 34 Old 01-24-2016, 07:18 AM Thread Starter
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No what I meant was the motor died before I had time to get it in gear. I would have had to let the clutch out at 7K rpm to keep it from dying. It seems the only way was to keep it in neutral and rev it up.

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