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Darith
Joined: 08 Jul 2010
Posts: 20
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 Posted: Fri Jul 23, 2010 6:47 am Post subject: K1100LTIC losing power |
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| About nearly two years ago my '94'k1100 got power issues. I eventually found out that the intake tubes were not in the best shape. Just replaced these. Now in fairness the bike has not been that active for the last two years although i regularly turned on the engine. I replaced the spark plugs. It isn't running smoothly though. At idle the engine seems fine. But when i take it on the roads it loses power at about 2000 rpm and as i apply more throttle the rpm or speed will not increase then suddenly it will get a boost of power and accelerate in rpm and speed. At idle after one or two miles of this behaviour the idle might experience the same behaviour. |
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whyoldbill
Flying Brick Rider
Joined: 12 Jun 2006
Posts: 440
Location: in the boonies, northwest of Columbus, Ohio
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| Posted: Fri Jul 23, 2010 11:24 am Post subject: |
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Check your ground (earth) connections going to the battery. You should have at least 2 heavy cables going to the negative side of the battery. My 97 LT had very similar symptoms and I found that I had missed one when I replaced the battery earlier in the year. There is also a bolt on the back of the engine/transmission with 2 ground wires on it. It's a really tough one to get to, but if that bolt is loose, you may have intermittent grounding on your coils.
regards,
Bill
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The desired effect is what you get when you improve your interplanetary funksmanship - George Clinton |
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old guy old bike
Flying Brick Rider
Joined: 18 Jul 2007
Posts: 373
Location: Lisbon, OH
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| Posted: Fri Jul 23, 2010 12:45 pm Post subject: |
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I would be changing the fuel filter and making sure that the gas in the tank was fresh. Wouldn't hurt to run some injector cleaner through it.
Might also want to make sure some critters have not taken up residence in the filter box during those last 2 idle years.
Jeff
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Jul 23, 2010 1:05 pm Post subject: |
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| old guy old bike wrote: | I would be changing the fuel filter and making sure that the gas in the tank was fresh. Wouldn't hurt to run some injector cleaner through it.
Might also want to make sure some critters have not taken up residence in the filter box during those last 2 idle years.
Jeff |
+1
(Chevron Techron concentrate is one of the better FI cleaners out there.)
For future reference, if you're not going to be riding for a while then you're better off putting some fuel stabilizer in the gas (and running some into the fuel system) before putting it up and then just letting it sit rather than starting it every month. Not only is it better for the engine but it's less work too.  A full tank is also a good idea as it leaves less room for water to condense in the tank and foul the fuel.
I'd take it out for a good run up to normal operating temperature for a while at least annually for a K bike - mostly as a method to keep the clutch nut O ring from drying and leaking which is a common problem for Ks that sit for extended periods. That should also help keep the fuel injectors from fouling.
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mnb
Flying Brick Rider
Joined: 20 Jun 2007
Posts: 660
Location: San Jose, CA
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| Posted: Fri Jul 23, 2010 2:55 pm Post subject: |
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BTW, what's the IC in K1100LTIC stand for? I've never seen that designation.
I've seen LTSE (LT Special Edition) and LTABS (LT w/ABS), but not LTIC.
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tmarshall57
Mad Brick Rider
Joined: 07 May 2007
Posts: 98
Location: Tottington, Bury, Lancs, UK
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| Posted: Fri Jul 23, 2010 3:53 pm Post subject: |
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LTIC = Police specification I think
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K1100RS Special Edition 1997
Arctic Silver/Black |
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mnb
Flying Brick Rider
Joined: 20 Jun 2007
Posts: 660
Location: San Jose, CA
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| Posted: Fri Jul 23, 2010 6:04 pm Post subject: |
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| tmarshall57 wrote: | | LTIC = Police specification I think |
wouldn't that be LTP? (like the RTP)
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1997 BMW K1100LT ABS Special Edition
2003 Husqvarna TE610e
2007 Harley Davidson Road King
2009 BMW F800GS
2011 Husqvarna TE310
2014 Ducati Multistrada Pikes Peak MNB Edition |
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tmarshall57
Mad Brick Rider
Joined: 07 May 2007
Posts: 98
Location: Tottington, Bury, Lancs, UK
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| Posted: Fri Jul 23, 2010 6:51 pm Post subject: |
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| mnb wrote: | | tmarshall57 wrote: | | LTIC = Police specification I think |
wouldn't that be LTP? (like the RTP) |
OK - I think LTIC is UK Police spec. Seen lots for sale on eBay
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Arctic Silver/Black |
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Trucker
Mad Brick Rider
Joined: 08 Nov 2009
Posts: 83
Location: Weston-super-Mare. England
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| Posted: Sat Jul 24, 2010 5:46 am Post subject: |
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My brick is ex police, and it has IC tagged on to the end, so you could be right. I must admit i had never really thought about this.
Cheers
Rich.
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1993 K1100LTIC.
2011 Triumph Sprint GT |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:20 pm Post subject: |
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| whyoldbill wrote: | Check your ground (earth) connections going to the battery. You should have at least 2 heavy cables going to the negative side of the battery. My 97 LT had very similar symptoms and I found that I had missed one when I replaced the battery earlier in the year. There is also a bolt on the back of the engine/transmission with 2 ground wires on it. It's a really tough one to get to, but if that bolt is loose, you may have intermittent grounding on your coils.
regards,
Bill |
Funny you should mention that as one day the motronic unit came loose and the bike would not start. I will check those cables as soon as possible |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:21 pm Post subject: |
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| old guy old bike wrote: | I would be changing the fuel filter and making sure that the gas in the tank was fresh. Wouldn't hurt to run some injector cleaner through it.
Might also want to make sure some critters have not taken up residence in the filter box during those last 2 idle years.
Jeff |
Waiting on a new fuel filter at the moment. Will have a look at the air filter also |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:22 pm Post subject: |
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| Flying Duck wrote: | | old guy old bike wrote: | I would be changing the fuel filter and making sure that the gas in the tank was fresh. Wouldn't hurt to run some injector cleaner through it.
Might also want to make sure some critters have not taken up residence in the filter box during those last 2 idle years.
Jeff |
+1
(Chevron Techron concentrate is one of the better FI cleaners out there.)
For future reference, if you're not going to be riding for a while then you're better off putting some fuel stabilizer in the gas (and running some into the fuel system) before putting it up and then just letting it sit rather than starting it every month. Not only is it better for the engine but it's less work too. A full tank is also a good idea as it leaves less room for water to condense in the tank and foul the fuel.
I'd take it out for a good run up to normal operating temperature for a while at least annually for a K bike - mostly as a method to keep the clutch nut O ring from drying and leaking which is a common problem for Ks that sit for extended periods. That should also help keep the fuel injectors from fouling. |
Thanks for that info, i was afraid that the clutch might be sticking a bit, hope not the case. |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:23 pm Post subject: |
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| mnb wrote: | BTW, what's the IC in K1100LTIC stand for? I've never seen that designation.
I've seen LTSE (LT Special Edition) and LTABS (LT w/ABS), but not LTIC. |
She is ex UK police bike, hence called LTIC due to the mods |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:24 pm Post subject: |
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| tmarshall57 wrote: | | LTIC = Police specification I think |
She is ex UK police bike, hence called LTIC due to the mods |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:24 pm Post subject: |
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| mnb wrote: | | tmarshall57 wrote: | | LTIC = Police specification I think |
wouldn't that be LTP? (like the RTP) |
She is ex UK police bike, hence called LTIC due to the mods |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Wed Jul 28, 2010 4:25 pm Post subject: |
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| Trucker wrote: | My brick is ex police, and it has IC tagged on to the end, so you could be right. I must admit i had never really thought about this.
Cheers
Rich. |
She is ex UK police bike, hence called LTIC due to the mods |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Mon Aug 30, 2010 9:10 am Post subject: |
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| whyoldbill wrote: | Check your ground (earth) connections going to the battery. You should have at least 2 heavy cables going to the negative side of the battery. My 97 LT had very similar symptoms and I found that I had missed one when I replaced the battery earlier in the year. There is also a bolt on the back of the engine/transmission with 2 ground wires on it. It's a really tough one to get to, but if that bolt is loose, you may have intermittent grounding on your coils.
regards,
Bill |
Well the spark plugs are all firing. Currently replacing the fuel filter and then i can test the fuel pump. Forgot to mention this. I said i could not replicate the problem when the bike was idle but if i put on centre stand and rev her form first to third and even fourth with plenty of rpm, i cannot replicate the issue either ? |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Mon Aug 30, 2010 9:12 am Post subject: |
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| Flying Duck wrote: | | old guy old bike wrote: | I would be changing the fuel filter and making sure that the gas in the tank was fresh. Wouldn't hurt to run some injector cleaner through it.
Might also want to make sure some critters have not taken up residence in the filter box during those last 2 idle years.
Jeff |
+1
(Chevron Techron concentrate is one of the better FI cleaners out there.)
For future reference, if you're not going to be riding for a while then you're better off putting some fuel stabilizer in the gas (and running some into the fuel system) before putting it up and then just letting it sit rather than starting it every month. Not only is it better for the engine but it's less work too. A full tank is also a good idea as it leaves less room for water to condense in the tank and foul the fuel.
I'd take it out for a good run up to normal operating temperature for a while at least annually for a K bike - mostly as a method to keep the clutch nut O ring from drying and leaking which is a common problem for Ks that sit for extended periods. That should also help keep the fuel injectors from fouling. |
Well the spark plugs are all firing. Currently replacing the fuel filter and then i can test the fuel pump. Forgot to mention this. I said i could not replicate the problem when the bike was idle but if i put on centre stand and rev her form first to third and even fourth with plenty of rpm, i cannot replicate the issue either ? |
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tmarshall57
Mad Brick Rider
Joined: 07 May 2007
Posts: 98
Location: Tottington, Bury, Lancs, UK
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| Posted: Mon Aug 30, 2010 3:05 pm Post subject: |
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I have recently had a similar problem on my bike - best described as an intermittent partial loss of power once the bike had warmed up - though never bad enough to cause a complete cut out i.e. when the throttle was released a normal idle ensued. Following advice on the forum I tried fuel additive (injector cleaner) and also checked the wiring harness connector leading from below the fuel tank.
The more I thought about this, the more I felt it was an electrical issue as full power would resume at random - and very suddenly.
To cut a long story short I checked the spark plugs (Bosch XR7LDC) and noted that cylinder 3 plug was dirtier than the others. I also noted that cylinder 1 spark plug lead was fitting a little loosely. The inside of the spark plug lead was corroded due to a previous owner running the NGK spark plugs without terminal ferrules. I ordered a replacement spark plug lead from Motorworks, fitted this and retested - still the same problem. I then ordered a new set of spark plugs (NGK DR7EA) which are provided without terminal ferrules and fitted these using ferrules from an old set.
The bike now runs perfectly - strange considering the Bosch plugs have done less than 7000 miles - albeit over 3 years.
_________________
K1100RS Special Edition 1997
Arctic Silver/Black |
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Darith
Joined: 08 Jul 2010
Posts: 20
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| Posted: Sat Feb 12, 2011 11:02 am Post subject: |
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In order to test if the hall unit or sensor is at fault. I remove the t cover, turn the bike on at
say about 2000 rpm. Appy the heat gun and notice if the power goes awol? |
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