| Author | Message | ||
     Dntndhd |
I'm currently helping out a guy with his 2005 XB12R, and I'm more knowledgeable in the 1125 area, so any help is appreciated. He's got about 20,000 miles on it, Jardine muffler with EBR ECM. Brand new spark plug wires and coils, and unsure of which sensors, but many were replaced by a Harley dealer. Ran it on the dyno and got 47 HP. Ran temp gauge on headers, both cylinders are running, confirmed spark on both cylinders as well. No air leaks to be found. Compression is in good shape, can't do a leakdown test at current because the tool guy is warrantying it. My fuel pressure line sprung a leak, but gauge showed 115 priming the hose with the leak. Waiting to get my new hose as well. ECM has been tested by EBR and confirmed good. My big hang up right now is timing. The only mark on the flywheel is a white paint mark around 30 degrees before TDCC. No mark appears with a timing light on it, have freehand adjusted the timing, runs best with it set to full advance, though still very lackluster. (Note: I do not have access to the HD computer to static time it per the manual) I want to help this guy out, the previous owner didn't take good care of the bike and summers waning fast. Thanks for the input. | ||
| Firemanjim |
No ECM-spy? And how is it running? Fuel pressure is supposed to be about 50 psi. 47 HP should be running horrible. Only bike I have seen similar had somehow revrsed the timing tables and at about 4000 it went to 0 degrees and fell right on its face,was a really weird one! | ||
| Greg_e |
Need to get static timing right. | ||
| Xb1221 |
Static timing HAS to be right. It can be done at home with a volt meter and two model airplane T Pins stuck in two of the pickup sensor wires. Forget which ones.....When you see the voltage jump for the #1 cylinder and the flywheel mark is at TDC you're golden. My race ECU process here. Pull the plugs and get a big socket to turn the sprocket bolt on the tranny. I can't emphasize enough sending the injectors off to RC Engineeering in SoCal. I was also chasing a mis-diagnosis till mine came back nice and clean. I'm on my 9th tank of fuel this season. 48 mpg with a stage 3 tuned 1169 race motor. http://www.rceng.com/Fuel-Injector-Cleaning-P43C0. aspx I also had a bad coil. New ones are $40 bucks while they last. Check the coil for proper resistance. Takes two minutes on or off the bike. Bosch Platinums are also the bomb!! Flame is a #2 pencil eraser sized ball, not that blue lightning bolt we're all used to. Fuel filter cloggered up..? I'll pray ya some wisdom too.... |
