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oldfieldcycles Brick Rider
Joined: 11 Jul 2013 Posts: 25 Location: Tallahassee, FL, United States
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Posted: Fri Jun 22, 2018 5:30 pm Post subject: fuel pump whine and throttle stall |
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been searching around the forum for a bit to see if anyone has had this issue, but none seem exactly the same. i have not ridden my 96 k1100rs for a few months due to the constant rain we have had. when i parked it, everything was just fine. yesterday i went to start it up and i heard a high pitch whine. everything else seemed fine, it idled and accelerated fine. it was low on gas so i went up to the gas station and filled it up. i then drove to work and about 2 miles in it began to stall anytime i tried to accelerate. i was able to start it and drive it a couple more miles to work and i thought it was a fluke. after work it did the same thing. now when i turn the key i hear the pump engage, then it starts fine, idles fine and you can even rev it with no issue but then slowly the fuel pump whine starts in and increases in volume and then when you rev it it bogs down and stalls.
i read that the fuel pump whine is common and seems like a lot of people live with it, that is, if its just noise and not a faulty fuel pump.
i guess what i am getting at is where is a good starting point for fixing it? _________________ 1996 k1100rs "ninja turtle bike" |
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Inge K. Flying Brick Rider
Joined: 30 Apr 2011 Posts: 458 Location: Norway
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Posted: Fri Jun 22, 2018 5:53 pm Post subject: |
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Check the folded seam on the filter, if it leaks it would make a sound like that.
It was a big batch of bad filters made many years ago, I did get one of them. |
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Niemand Mad Brick Rider
Joined: 29 Mar 2006 Posts: 106 Location: NC, USA
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Posted: Sat Jun 23, 2018 3:03 pm Post subject: |
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I'm with Inge on this. Even if not one of the bad ones, it does sounds like a filter issue. If everything is still original in the tank you could have the pump vibration damper ring turning to goo plus a hole in the prefilter/sock allowing said goo to make a whiny fuel pump even whinier as it strangles it to death.
They are loud for sure, especially with a lower fuel level allowing it to resonate. One of the few dislikes I have about the bike. _________________ Niemand
1994 K1100RS
2023 DR650SE |
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Al. Flying Brick Rider
Joined: 28 Oct 2005 Posts: 383 Location: West of Ireland
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Posted: Sun Jun 24, 2018 9:27 am Post subject: |
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Filter to.
I had stalling problems and power loss quite suddenly.
Changed the in line filter and all was well.
I'd try easy option first. _________________ 1994 K1100 LTSE + Blackbird |
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oldfieldcycles Brick Rider
Joined: 11 Jul 2013 Posts: 25 Location: Tallahassee, FL, United States
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Posted: Mon Jun 25, 2018 10:36 pm Post subject: |
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Stalling issue was the filter. There was an inch long crack in it. Replaced it with another one that came with the spare parts from the previous owner. Looks new but I'm not sure. Runs fine now but the whine is still there which didn't exist before. _________________ 1996 k1100rs "ninja turtle bike" |
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Jim Site Admin
Joined: 17 May 2003 Posts: 3840 Location: WHERETHEFUNNEVERENDS
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Posted: Mon Jun 25, 2018 11:28 pm Post subject: |
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Dump a bottle of Techron injector cleaner in the tank before you fill up - see if that helps. Can't hurt. _________________ Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE
"We shall not all die, but we shall all be changed." |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3117 Location: Central Iowa, USA
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Posted: Tue Jun 26, 2018 9:03 am Post subject: |
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The stock fuel pumps on these bikes do whine. There was a time when these bikes had a nic-name of "k-whiners", and as Niemand has mentioned above the whine will get louder as the fuel level gets lower.
Nature of the beast.
If it really bothers you, you could replace the pump with the alternative "ford" replacement.
http://www.k11og.org/forum/viewtopic.php?t=6454 _________________ Ride safe.
1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.) |
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