| Author | Message | ||
     Preybird1 |
So i went out to help another bueller out with his no start problem. He said he filled up with gas and then it was dead. So instead of pulling his pump out of the tank i tried my tank and filter same problem i did put new fuel line on from the fuel rail to the filter since i was in there. Ran ecmspy and only code was low battery. Tested all other functions and all was ok. Rear head temp sensor plug sounded cooked when i flipped it up and down. Tested original ecm and it looks ok on ecm spy. Did tps reset just in case. still no start. Checked with race ecm installed. Still no start. Pulled plug and tested spark-it was good. Got power from coil. While plug removed smelled vapors ejected from spark plug port didnt smell gas. smelled exhaust when turning over didnt smell gassy. Possible plugged injectors? Or blocked petcock? Used know working parts as i rode my bike there and used my bike as test for parts. Is there a sensor that might cause a no start condition i.e. bank angle sensor, As i do see evidence of this bike being down with the dented header. The check valve in the tank is known to function properly. So all i got left is a sensor or blocked petcock, But fuel was present in both sides of the fuel lines. We didnt change the spark wires. And this bike has 2500 miles on it. Also pulled each fuse to be sure. Put parts on donor bike and it fires right up, Proof of the functioning parts used. Only the kickstand sensor and the air temp sensor was not checked. BUt i have known working one i will let him try that. That only leaves the timing, bank angle sens,and rear temp sensor, o2 sens. am i missing anything! This is quite strange in my eyes, I would crank over and over and then sputter for 1-3 seconds and die, The guy i was helping said this is more than he had got the bike to do for over a month so what the hell is going on! one thing weird was when i did the tps reset turning the throttle adjuster screw it binded the throttle cable and i pulled harder and it kinda poped back into movement, I didnt have time to pull the air box off and see what was up as. It worked after the bind up. So as always thanks for the input good/bad I would like to get this guy up and riding again as winter is going to be here in 28 days!!! | ||
| Rich |
Did you dump some gas into the throat to see if it would run? | ||
| Numb_nutz |
I had the same problem, Spray carb cleaner in the throttle body see if it fires. What happened to mine was the injector pulse was shorten up for some reason it wasn't getting enough fuel. If i unplugged the TPS i could hold the throttle open and get it to run but not drive. It went to the dealer they couldn't fix it so i went to a carb conversion and life's been good. It must be a ecm or wiring problem. | ||
| Jos51700 |
BAS would kill spark. Have you checked compression? What color were the spark plugs? Did you put NEW plugs in it? A bad O2 sensor will screw up AFV, thereby fouling plugs, but a bad 02 sensor will not, in itself cause a no start. BTW, what is the AFV? On ANY Buell EFI machine, AFV is the NUMBER ONE diagnostic tipoff. Don't tell me you reset it, tell me what the number was. Have you checked timing)? You can have all you need for a powerful, efficient engine, but if the timing is off too far, it's a boat anchor! Sometimes the screws can loosen, allowing the timing plate to twist itself. I've even seen them twist back and forth so much the slots get elongated! | ||
| Jos51700 |
Spray a little cable lube onto the idlespeed adjuster where it meets the throttle body, lest you break that cable. | ||
| Preybird1 |
He installed new plugs before i came over and plugs had no color yet. tps said 99 before i reset it, I didnt have time for compression test. I didnt pour fuel down the throat. But he said if he sprays starter fluid it will run! thats why i swapped the fuel cell, I tried to swap over as many good parts to narrow down the field, But he lives 30 miles from me.I let him borrow the factory book so he can read up on the bike, He said he is going to be home this week so maybe he can get it fixed. Is there and thing in the petcock that could block fuel, I did see there is a valve but i dont think it would block flow, He has just moved here so hes a little busy as am i. Man it was good ride out to his house until i headed back and i swear to god i rode through like 10,000 flies it was so bad i had to stop and scrape them from my visor i couldnt see anything, It took me an hour to clean them from my helmet. (Message edited by preybird1 on September 29, 2008) | ||
| Jstfrfun |
A proud rider wears his bugs like a badge of honor. Good luck, I'd check that BAS...pronto. | ||
| Malott442 |
Why not prop the cell and pull the injectors? Take a shirt or large rag (I used a towel) and see if the injectors are working.... You hear the pump? Either way, not trying to thread jack, but I have a set of injectors and a fuel pump I have for sale..... | ||
| Bad_karma |
While you are in there check and make sure that the butterfly retaining screws haven't fallen out. Joe | ||
| Jos51700 |
You keep saying petcock, and you keep saying pump. Which is it, exactly? They don't exist together on one bike. | ||
| Kalali |
"..They don't exist together on one bike..." I was going to say the same thing. Anyway, a couple of observations...TPS has to be done with engine at operating temp so now you may not be able to start the bike even if you fix the original root cause. Also, the idle adjuster cable could snap out of the adjustment screw or break altogether with little force. So your idle may be out of whack but now you won't be able to be sure because you reset the TPS and the ECMSPY will give you the wrong values. My suggestion is to get to the idle screw by essentially removing all the plastic airbox stuff and make sure it is turned enough to allow for a tick over. If cable is snapped, you can turn it by using a pair of long nose pliers. None of this will solve the original problem but could help you get to where you started... Good luck. | ||
| Preybird1 |
I talked to him last night. He said he was going to work on it today! So we may have some clarity! But thanks for info anything helps. | ||
| Marvelous1406 |
Hey guys, I'm a new poster(if thats even a word) to the forum but a reader for a while. I ran across this same issue with my bike. When it did run it felt as if it was running on one cylinder and then finally it would start, sputter and then cut off(sometimes with a white smoke coming from the air filter). I changed plugs, wires and filters and still nothing. Finally I decided to try and clean the injector. I wrapped a wire around each connector in the injector and in one second pulses connected it to my car battery. Every time I connected the wires the injector clicked(bc it was opening) and as I opened the injector I had my girl spray compressed air into the injector. Reconnected everything and the bike started right up. | ||
| Preybird1 |
Hhmm an idea for sure. He has not got back to me for a while, And he has my factory manual. But he is on the road a lot. maybe ill call him and see if he has any luck with getting his bike going. | ||
| Jos51700 |
Marvelous 1406 is lucky he's not buying new injectors, and probably new ECM's with that kind of stuff. Now, it's a great idea, and I wish I'd thought of it, but injectors GROUND to open!!! All you would've needed to do was ground out the ground side, and you would accomplish the same thing, without all that nasty back feed and excessive current. | ||
| Sparky |
I think Marveous did it right. It sounds like he disconnected the injector and temporarily wired each pin to the car battery without involving the motorcycle's electronics, thus sparing blowing the ECM. Correct me if I'm wrong, but to ground out the ground side, one would have to break into the wiring somehow and power up the motorcycle. That sounds more risky than what Marvelous did, IMHO. | ||
| Marvelous1406 |
Yea like Sparky said I had the injector in hand, disconnected from the motorcycle. This way I'm not messing with the ECU and when I spray the compressed air, the junk goes to the garage and not the combustion chamber. And I went into knowing that if i did something wrong I may need new injectors... but the bike has been running amazing since besides the fact that my clutch cable broke  . But I'll be ready for biketoberfest next weekend. |
