| Author | Message | ||
     Uh60crewdawg |
Ok this problem i have had for a long time now Hard to diagnosis because it tends to be intermittent. 08 1125r barker exhaust race ecm. Load of other mods but this issue is defiantly engine related. Heres how shes running i can start her up just fine. Momentary system voltage like everyone else no big deal I can even ride her easy 95% of the time with no issues. But when i get on the gas she hiccups. like ignition or fuel is shut off for only a split second. If i maintain throttle she will hiccup roughly every 2 seconds but otherwise climb through the powerband as advertised. Some times it takes a lot of throttle to get it to do it and sometimes ill get a hiccup as soon as i let out the clutch resulting in a stall. Only recently did something happen that i became worried she was acting up as usual about 50% throttle causing problems so i was playing around how i could. I did a pretty high stoppie to a full stop and slammed her down harder than i intended and the hiccup problem got drastically worse if i touched the throttle she was skipping in gear in neutral no difference. Past 5000 rpm or more she backfired blue flames. I limped her home literally hiccuping every other second. After she was home though for about 3 hours i started her to show my buddy the problem. She was fine. i had to give her a good 60% throttle in gar to produce a hiccup. everyone i know is scratching there heads. Now things ive done trying to fix said problem. Ive traced and cleaned all my ground including the one on the engine block. Even went the extra mile i think it was puzzled recommended by adding a ground cable from battery to starter mount point Ive tried running stock ecm same problem barker exhaust is new (replaced the can) cleaned out injectors and throttle bodies Valves are dinge yellow as normal and adjusted recently adjusted @ 12000 miles Im at 14000 now TPS sensor according to diag mode is good .5 - 3.9 diag mode also reads back plenty of pressure from the fuel pump. Shes not throwing any codes even when i had the bad incident Other ideas i had thrown out there but i don't see how they could cause it is Bank Angle Sensor, Ignition switch ( the misfire is constant so rules out a grounding wire The only other maybe contributing factor is she has a weird cooling issue which im thinking is a thermostat going sometimes she runs nice around 170 other times i cant get her below 190 but by the end of my limp home 6 miles 50mph maybe 3 stop lights she was at 230 I'm really out of ideas I just started to tear her down to get to the fuel pump just to ensure its all intact and clean. even though fuel level in the tank has no effect on the issue and im running 93 ethanol free gas. Any thoughts? Called Danny at EBR and could tell even he was scratching his head. He is the one who enlightened me to the grounding point on the engine. | ||
| Dennis_c |
 me to. How about the wires going to the coil could they have a break in them be loose. can you tell which cylinder that might help. | ||
| Uh60crewdawg |
well it idles fine and usually only has a problem under power at speed so i cant use the diag mode to figure that out. Both plugs have evidence of a good burn though. | ||
| Craigsmoney |
Try pulling off the stator cover and looking at the notches for the crank sensor. There is a tbs for incomplete machining of the tdc teeth causing the crank sensor to get confused. It is an easy inspection. | ||
| Kruizen |
Go back in diagnostic mode and check your tps again. - shouldn't it read .5 - 100 as you twist the throttle. It's been a while since I've looked at mine. | ||
| Brumbear |
replace coil packs | ||
| Baf |
TPS reading definitely looks off, like Kruzien said. Might be worth doing a TPS reset. | ||
| Colintornado |
The tps reading you give sounds like the volts, the % is also displayed and should be 2% to 100% as far as I recall. My mate had similar running as you describe and we found by swapping his injectors for mine fixed it,he then fitted the new updated type to his 08. | ||
| Tbowdre |
Is Fuel pressure okay? | ||
| Ratbuell |
Noid? The temp sounds like my CR...it will heat up in traffic but I've seen 230 many times with no ill effects. Soon as I get some air flowing through the radiators it cools right back down. Mine never goes into "limp" mode or anything...so I don't worry about it. I just keep my cluster on the volts setting...and ride. | ||
| Nuts4mc |
...Euro versions have a kick stand down switch ....I don't know about US - the wiring might be there - if the wire is there (a post a couple month's ago about a speed shifter from Amazon/DynoJet that connected to the "kick stand" wire...if it was activated it would kill the engine...two things were wrong with the switch a)the P/N offered for sale by Amazon was wrong, b) the switch logic was backwards (NO vs NC...I don't know which is correct) ..getting back to your bike - if the kickstand switch wire is there and it grounds out....maybe it's killing the spark...hope this helps | ||
| Uh60crewdawg |
TPS reading i gave is the volts yes i did the percentage too 2-100 smooth transition according to diag mode fuel preasure is good Has anyone had issues with injectors every other vechile ive worked on i could blow air through the injector. Even after cleaning i cant get any air through them. Normal? kickstand switch ill look into but those normally just shut the bike off as soon as its in gear. | ||
| Xbdave9s |
Sounds like a coil / spark plug issue. I work on cars/trucks for a living and that would be what I would be testing or inspecting for the same concerns on a vehicle. | ||
| Chameleon |
Did you ever get this sorted out? Kickstand switch is not present on US models. | ||
| Deanschween |
yo crewdawg, are your fans lighting up? I just experienced this issue recently when my bike ran super hot one day. I had to ride it home an hour or so and when I got close to home I got this hiccup business when I laid on it. Also stalled a couple times...When I got home I noticed the fans were not operating. Took me a couple weeks to address this, but when I took the left shroud off I found the fan's bearing was pretty worn out. Sounds like you (as well as other 1125 owners) enjoy a good wheelie/stoppie from time to time, so you may have brought the front end down harder than expected and jolted one of the fans. I was happy to find the screwed up fan, get another in the mail, slap it on and have the bike working perfectly again. I think your bike just got too hot and entered this weird hiccup mode to generate less heat. My theory at least... |
