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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Edb100cafe on May 19, 2016, 09:59:08 PM
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Hello All,
I'm having an issue with my K100, that after searching, I couldn't find another post with similar symptoms. This is only my second day of riding the bike, although I bought it this winter and did some modifications as well as yard riding. First day out I rode it for 20 minutes round trip, bike started right up, seemed a little rich, but had no misfire to speak of. Today I took it out, maybe 15 minutes into the ride, the bike started misfiring badly. When I let off the gas the engine died, would not restart. I gave it a little throttle while cranking and the bike started but was still misfiring badly. I was only 2 minutes from a friends house so I nursed it there. In a quick investigation I found spark on all cyls, good spray from all injectors. Also found all 4 plugs to be fouled. Will look into it more tomorrow but was curious to see if anyone has had similar issues. Any help is greatly appreciated.
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And just how old is the gas in the tank? Was the tank full with fresh gas and a pint of stabilizer when stored? Try fresh gas and report back.
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BTW clean cafe........but get out your Dremel and lose the tank holes right & left. Beyond fresh gas, check the fuel pump function.
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Thanks. Gas tank was filled today with 93. Friend filled up at the same time and had no issues so I am ruling out bad gas.
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I would look at air intake issues. Check the bushings by the injectors with propane. (Sounds dangerous but actually safer than started fluid). That rubber can crack suddenly and give the problems you describe.
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Thanks, Ill check it out
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greetings edb100cafe...
your cafe moto needs fork gaiters to be taken seriously here at motobrick.com...
j o
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I'm having an issue with my K100, that after searching, I couldn't find another post with similar symptoms.
Right. :laughing-on-ground:
Following on from Mystic Red's suggestion, also pull the fecking airbox, clean the box of mice, gazelle and road deposits, clean the filter, check all hoses large or small, check the vacuum caps on the throttle bodies for integrity, then report back. Don't forget the installing of fork gaiters, too.
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Everything I came up with had some similar symptoms but a few variables missing. Ill pull the intake and check it out, thanks. Gaiters are on the list
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gaiters come in colors now... donts gotts to be black... you can getts them in gray to match your battery...
j o
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So you searched motobrick.com for "rough idle (https://www.google.com/search?q=site%3Amotobrick.com+rough+idle&oq=site%3Amotobrick.com+rough+idle&aqs=chrome..69i57j69i58.11780j0j4&sourceid=chrome&ie=UTF-8)" and couldn't find any similar problem threads?
Thanks. Gas tank was filled today with 93. Friend filled up at the same time and had no issues so I am ruling out bad gas.
Doesn't matter. Pour a bottle of Seafoam or HEET in your tank and rule out water for sure.
It's probably an air leak though.
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Guess our inmates are interested in rebuilding your cafe while they solve your problem.............so let me join in..... you can get a 12 cell lithium,mount in in the battery box on it's side to lose the ugly big battery.
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so let me join in..... you can get a 12 cell lithium,mount in in the battery box on it's side to lose the ugly big battery.
Be advised though, doing that will attract dogs.
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http://www.amazon.com/Rancho-RS1952-Shock-Boot/dp/B000CPCCFY?ie=UTF8&colid=23Z9PYKMM8YT7&coliid=I2P5KZWKKZA24K&ref_=wl_it_dp_o_pC_nS_ttl (http://www.amazon.com/Rancho-RS1952-Shock-Boot/dp/B000CPCCFY?ie=UTF8&colid=23Z9PYKMM8YT7&coliid=I2P5KZWKKZA24K&ref_=wl_it_dp_o_pC_nS_ttl)
Good cheap gaiters w/chaos's 5 star approval :bmwsmile
"Be advised though, doing that will attract dogs." Laitch, when did you go from helping people to giving fecked up opinions? :bmwsmile
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fouled plugs... now new plugs... same thing...
wondering if your new plugs have the nipple and if the wires are on there properly...
j o
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just had a friend start his bike for first time this year and have similar problem drove to my work and i discovered he had been driving around with chock on i know its a shot in the dark and sounds strange but its has happened before good luck you are correct my mistake totally forgot bricks are all injected sorry
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just had a friend start his bike for first time this year and have similar problem drove to my work and i discovered he had been driving around with chock on i know its a shot in the dark
Yep,Bricks don't have choks,or chokes...they have cold start idle speed raising levers.
Hmmm. fouled plugs...running rich...dies when hot....
Either the air's not getting in (enough)or the brain thinks the air's not getting in.(maybe?)
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Possibly faulty temperature sensor check the post on how to test.
Regards Martin.
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"Be advised though, doing that will attract dogs." Laitch, when did you go from helping people to giving fecked up opinions?
It wasn't meant as an opinion, Jack, but rather as a heart-felt warning. I deduced such an outcome by observing Ace's avatar photo as I read his battery advice. I just don't want anyone bitten who doesn't actually deserve it. I care too much.
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"Be advised though, doing that will attract dogs." Laitch, when did you go from helping people to giving fecked up opinions?
It wasn't meant as an opinion, Jack, but rather as a heart-felt warning. I deduced such an outcome by observing Ace's avatar photo as I read his battery advice. I just don't want anyone bitten who doesn't actually deserve it. I care too much.
:threadjacked Sorry, Laitch...you have the sharpest eyes, a dry new england wit, and the greatest attention to detail on this forum. I missed your reference AND Trueace's new signature :hehehe Now the remark about needing bit might be slightly fecked up...
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JackGeiger, since you aren't noticing things, allow me to notice that if Laitch says "because I care", put your hand over your wallet. And by the way, better get that jackass picture in your avatar, cause apparently the HC is on a Love Animals" jag again, who knows how long this will last. Bet he's feeling bad about running over the neighbor widow's cat when I was up there riding with him .
EVERYBODY PAY ATTENTION :mbird IT's LOVE ANIMALS, PEOPLE. POST THOSE AVATARS! :2thumbup:
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If this keeps up I'm gonna get a depends from Bob Dole :bmwsmile
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Little update. Checked the resistances on the MAF, IAT, water temp and all came back within spec. Added some Heet just as a precaution. Cleaned EFI connector and replaced plugs with D7EA. Also inspected injectors for any leaks, all hold. Replaced a cracked line from the tank to FPR. Next up is checking the fuel pressure. Bike is dumping fuel at all times it seems. Will not start with the fuel pump plugged in while cranking.
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When you say will not start, is it flooding. And if so will it start with the fuel pump fuse removed ( Kraffstoppe # 6 ).
Regards Martin.
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I have been unplugging the 4 pin plug for the pump/sending unit. But yes it floods. I can get it started with the pump unplugged and cracking the trottle.
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Update- Fuel Pressure is 36psi while cranking
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fuel lines reversed perhaps...
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fuel lines reversed perhaps...
Red herring alert.
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fuel lines reversed perhaps...
Been there, done that one too. I've done them all.
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Fuel lines are in the correct location
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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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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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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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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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Mine looks like this...
(http://uploads.tapatalk-cdn.com/20160523/ec78dfdc049f259115930f7075c2672b.jpg)(http://uploads.tapatalk-cdn.com/20160523/79ca4dfbb4745d131616c7b055d522b9.jpg)
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Ok thanks, so the white isn't abnormal
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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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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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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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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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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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Thanks for the update! :2thumbup:
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Another Brick back in the wall.Good news.