| Author | Message | ||
     Pontlee77 |
By mistake i turned of the bike on the parking position? Where the short beam stays on, so after 3-4hours the battery was with hardly any charge, i tried a push 2nd gear start the bike started i pulley the clutch to engage 1st but engine stalled. So i'm questioning why did it stall? The bike is back home and i charged the battery and all is back to normal? Thanks. | ||
| Reepicheep |
Dunno. Maybe the engine speed (meaning low stator output) combined with the low battery meant there wasn't enough power to run some critical component very well, and the result was the odd symptom you observed. I can't tell you what low voltage will do to a particular bike, but I can tell you it will probably be really weird whatever it is. | ||
| Callawegian |
I bumped started my 06 twice in the same day and I had no problems. Battery was going bad and hold a charge for long periods of time | ||
| Tempest766 |
I didn't think it was possible to bump start an EFI engine at all with a totally dead battery. I thought you needed some charge for the injectors to work properly and the ecu to have power...thus the apropos statement that modern engines are nothing but boat anchors without an ecu. | ||
| Arcticktm |
You can start an EFI this way, if it is designed appropriately. You don't even need a battery in some cases. You need to get enough RPM into the system so there is enough juice being generated to power the ECU. That can vary a lot based on ECU and the electrical system. Arctic Cat used to make a lot of 2-stroke snowmobiles that were EFI and had no battery at all in them. Pull start only, which isn't any different to the engine than making RPM by pushing it in gear. Their key (vs competition that needed a battery) was getting enough electricity to wake up the ECU. They did this by making an appropriate ratio of the recoil starter to the engine RPM. IIRC they needed something like 300 RPM to make the computer function on those sleds. It worked very well. | ||
| Froggy |
My theory: Squeezing the clutch lever dropped the engine RPMs, lowering the amount of power being generated by the stator. You dropped voltage to the point that something in the EFI (likely the fuel pump) cut out again, resulting in a stall. If you just rode it out or downshifted without letting the RPMs drop it likely would have kept running
This basically is the case. There is a difference between too dead to start and totally dead. In the OPs case, it was too dead to start, but had enough juice to at least get the fuel pump primed. If it is totally dead, it still is possible to push start it, it just will take more effort as you need to be going a bit before there will be enough power for it to take over. | ||
| Pontlee77 |
Thanks for all the replies. | ||
| Ratbuell |
"Turns out your friend here is only...MOSTLY dead." Sorry. Had to do it, since all the "real" answers are already posted  | ||
| Tempest766 |
Bye,bye boys! Have fun storming the castle! | ||
| Natexlh1000 |
"Think they'll make it?" | ||
| Reepicheep |
"I have a surprise. I am not left handed!" (My daughter is turning into a really good Lacrosse player. We use that line all the time when she is playing a group of girls that she can score on at will, we make her do everything off-hand).  Um, what was the topic again? |
