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#1001836 - 12/03/17 01:56 AM Re: Poor running 2010 RT [Re: dirtrider]  
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MikeB60 Offline
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Smiths Station, AL
TheOtherLee, Thanks!

All of the second gear data was during the time where the bike is acting up.


'13 K1600GT
'16 R1200GS
'04 Yamaha FZ1
#1001856 - 12/03/17 12:14 PM Re: Poor running 2010 RT [Re: MikeB60]  
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dirtrider Offline
The Oracle
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Originally Posted by MikeB60
TheOtherLee, Thanks!

All of the second gear data was during the time where the bike is acting up.


Morning MikeB60

I asked Roger to look at your data & he saw something that I didn't until he pointed it out. If the data is real-time & matching across all cells then it looks like you might be lacking fuel in a few places in your posted trapped data.

Can you re-run another data trap for us only this time do not let off the throttle until you are all the way through the problem zone (ie try to run through the problem zone at held throttle or increasing throttle but don't back throttle off until you have either revved to above the problem or have 2-3 seconds or more of the problem showing without throttle back off.

If you can't run another data trap per the above then you might try to rig up a FPC by-pass harness & run the fuel pump at full voltage for a test to see if the problem goes away .


D.R. ___
Sent from my rotory dial wall phone!
#1001861 - 12/03/17 02:11 PM Re: Poor running 2010 RT [Re: MikeB60]  
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MikeB60 Offline
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Smiths Station, AL
Got it, thanks


'13 K1600GT
'16 R1200GS
'04 Yamaha FZ1
#1001873 - 12/03/17 06:08 PM Re: Poor running 2010 RT [Re: MikeB60]  
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MikeB60 Offline
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Smiths Station, AL
OK, runs great with the fuel pump controller bypassed! Here is a link to the data capture HERE. If you click on open at the top right, you can download the spreadsheet. I haven't compared it to the other capture, not that I really know what I am looking at anyways!

Thanks to dirtrider, you are a great asset to this board!


'13 K1600GT
'16 R1200GS
'04 Yamaha FZ1
#1001881 - 12/03/17 07:03 PM Re: Poor running 2010 RT [Re: MikeB60]  
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dirtrider Offline
The Oracle
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Originally Posted by MikeB60
OK, runs great with the fuel pump controller bypassed! Here is a link to the data capture HERE. If you click on open at the top right, you can download the spreadsheet. I haven't compared it to the other capture, not that I really know what I am looking at anyways!



Afternoon MikeB60

I assume that data was taken with it running good?

I took a quick look at the data but I only have small screen beat-to-death laptop with me at the moment so it is difficult to see the whole story. From what I can see it still looks like a couple of negative engine load numbers just prior to a decel. I'm thinking there is some lag time in the data capture between dropping the throttle & the fueling catching up -- (I'll get Roger's input on this).

OK, now on the FPC by-pass-- USUALLY that points to a failing FPC but there are so few FPC failures on the Camhead that I can't say for certain that is the issue (could be the FPC itself, or possibly something telling the fueling computer to not command 100% fuel pump in that operating range. (lets hope it's just a bad FPC).

Was there any moisture or water inside the fuel pump well in the fuel pump pass-through. Also look at the bottom of your FPC to see if any signs of bubbling or heat damage from the bedded components just above the bottom layer.


D.R. ___
Sent from my rotory dial wall phone!
#1001882 - 12/03/17 07:13 PM Re: Poor running 2010 RT [Re: MikeB60]  
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MikeB60 Offline
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Smiths Station, AL
Yep, the data was with the bike running good.

The FPC looks good, nothing obvious with a visual inspection. No water in the fuel pump well as well.

My GS has the same FPC, I'm going to put it in the RT and see what happens.


'13 K1600GT
'16 R1200GS
'04 Yamaha FZ1
#1001884 - 12/03/17 07:28 PM Re: Poor running 2010 RT [Re: MikeB60]  
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dirtrider Offline
The Oracle
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Originally Posted by MikeB60
Yep, the data was with the bike running good.

The FPC looks good, nothing obvious with a visual inspection. No water in the fuel pump well as well.

My GS has the same FPC, I'm going to put it in the RT and see what happens.


Afternoon MikeB60

That is a excellent idea.

Please post a follow up here when you get a handle on it.


D.R. ___
Sent from my rotory dial wall phone!
#1001888 - 12/03/17 08:26 PM Re: Poor running 2010 RT [Re: MikeB60]  
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6speedTi Offline
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Just want say you guys are awesome in assisting fellow riders. I hope I don't ever need to go this in depth but I am prepared. I have a GS-911. I have 60,000 miles on my 2012RT and up to this point it's been very reliable. Now that I opened my big mouth.........😲. Thanks especially to Dirt Rider. Merry Christmas..........

#1001893 - 12/03/17 09:45 PM Re: Poor running 2010 RT [Re: MikeB60]  
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MikeB60 Offline
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Smiths Station, AL
Well I don't think its the FPC, The bike runs like crap with the FPC from the GS as well.


'13 K1600GT
'16 R1200GS
'04 Yamaha FZ1
#1001896 - 12/03/17 10:09 PM Re: Poor running 2010 RT [Re: MikeB60]  
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dirtrider Offline
The Oracle
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Ohio
Originally Posted by MikeB60
Well I don't think its the FPC, The bike runs like crap with the FPC from the GS as well.



Evening MikeB60

That's too bad, a new FPC would have been an easy fix.

A long data trap like your second one above with the bike acting up again would be nice. (might show us something that the short original didn't)

Run it one more time with the FPC by-pass just to verify that it DOES run good at 100% pump current. (this could help with where to look next)

It might also be time to run a fuel pump flow & pressure test-- (might show a pump output pressure or flow issue)

You might also pull the fuel pump out to see if the pump intake sock (strainer) is plugging with crud or collapsing.

Let me (& Roger) think on this tonight-- This isn't going to be an easy nut to crack.





Last edited by dirtrider; 12/03/17 10:21 PM.

D.R. ___
Sent from my rotory dial wall phone!
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