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Author Topic: 88 K100LT Random Misfire Suddenly Worse  (Read 22871 times)

Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #25 on: May 21, 2016, 08:01:07 PM »
Update- Fuel Pressure is 36psi while cranking
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  • 88 K100LT

Offline johnny

  • TrailBrakingThrottleWhacker
  • ^ Quintessential Motobricker
  • Posts: 7652
  • Whacking...n...Chopping Sliding...n...High Siding
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #26 on: May 21, 2016, 08:16:04 PM »
fuel lines reversed perhaps...
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  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #27 on: May 21, 2016, 08:19:17 PM »
Quote from: johnny on May 21, 2016, 08:16:04 PM
fuel lines reversed perhaps...
Red herring alert.
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline mystic red

  • Retired Professsional Driver
  • ^ Quintessential Motobricker
  • Posts: 2922
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #28 on: May 21, 2016, 08:51:58 PM »
Quote from: johnny on May 21, 2016, 08:16:04 PM
fuel lines reversed perhaps...

Been there, done that one too. I've done them all.
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Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #29 on: May 21, 2016, 09:02:34 PM »
Fuel lines are in the correct location
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  • MA
  • 88 K100LT

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4475
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #30 on: May 21, 2016, 10:29:12 PM »
Sounds like the temperature sensor is faulty or a bad connection. A known problem with bricks, there is a test procedure for the switch on this site.
But before you do this clean the connection and make sure it is not loose.
Regards Martin.
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #31 on: May 21, 2016, 11:16:19 PM »
Quote from: Edb100cafe on May 21, 2016, 09:02:34 PM
Fuel lines are in the correct location
Yep.wont run for 15minutes with them reversed...OP image shows them clearly, connected correctly.
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #32 on: May 22, 2016, 11:15:04 AM »
I checked the resistance of the sensor at the EFI plug and actual sensor. 70*F and got 2.4k ohms. So the senser and wiring are both good.
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  • 88 K100LT

Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #33 on: May 22, 2016, 05:52:26 PM »
Still no improvement. I pulled the cover on the HES and noticed this part of the plastic to be white. Has anyone seen this before?
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  • 88 K100LT

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #34 on: May 23, 2016, 03:42:15 AM »
Mine looks like this...

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  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #35 on: May 23, 2016, 07:09:00 AM »
Ok thanks, so the white isn't abnormal
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  • 88 K100LT

Offline jjs1234

  • ^ Proficient Motobricker
  • Posts: 409
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #36 on: May 23, 2016, 10:25:42 AM »
I doubt it's something as small as that is causing your issue.

Sent from my HUAWEI MT7-L09 using Tapatalk

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  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline Laitch

  • Faster than a speeding pullet
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Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #37 on: May 23, 2016, 10:51:07 AM »
Quote from: jjs1234 on May 23, 2016, 10:25:42 AM
I doubt it's something as small as that is causing your issue.
How large does something need to be to cause a problem, jjs?  :hehehe
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #38 on: May 23, 2016, 02:51:20 PM »
Quote from: Laitch on May 23, 2016, 10:51:07 AM
Quote from: jjs1234 on May 23, 2016, 10:25:42 AM
I doubt it's something as small as that is causing your issue.
How large does something need to be to cause a problem, jjs?  :hehehe
Is there any evidence that the smoke has been let out?
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
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  • Posts: 11299
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #39 on: May 23, 2016, 06:01:03 PM »
Quote from: The Dude on May 23, 2016, 02:51:20 PM
Is there any evidence that the smoke has been let out?
Good observation, Dude! It's time for a sage cleansing.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Edb100cafe

  • Motobrick Curious
  • Posts: 12
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #40 on: June 06, 2016, 11:10:24 AM »
Update-

After checking all that I could, decided to get a Efi ecu from ebay. Bike started right up and is running great.
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  • 88 K100LT

Offline Laitch

  • Faster than a speeding pullet
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Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #41 on: June 06, 2016, 11:13:08 AM »
Thanks for the update!  :2thumbup:
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Dude

  • ^ SuperNatural Motobricker
  • Posts: 509
Re: 88 K100LT Random Misfire Suddenly Worse
« Reply #42 on: June 06, 2016, 02:50:06 PM »
Another Brick back in the wall.Good news.
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  • Auckland, New Zealand
  • K75s
Current.
TR6R 1973 from new.
Moto guzzi 850 III .1983 from,almost, new.
K75S 1986 from new.vin-0103141
On my second millionth km.give or take a hundred k Kay's.
"The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there."
All the best!
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