New Scooter Problems: Any Ideas?
Okay, I know this is a KLR650 forum but I think this might be a simple problem I just can't figure out.
Picked up a used BMS 49cc scooter today for the wife to ride. I got it from a guy I work with.
When we went to get it, it fired right up. We brought it home, started it a couple of times and rode it up and down the street a few times. Then, it was just sitting there idling and died.
The fuel filter and lines were easy to get to, so I disconnected the line from the tank at the filter and no gas came out. I blew into the line back into the tank and heard it gurgle then gas came shooting out. I also disconnected the line past the fuel filter and gas spewed out so I know it's not clogged. It was running on the old gas before, but I went ahead and topped it off with fresh gas and some Seafoam.
Problem solved, I figured. It still spun, but wouldn't catch. Went back after awhile and checked the gas line again and again, no gas was coming out, so I blew through it up into the tank again and got the gas flowing again.
I figure if the lines were full of fuel, the thing would at least run until they ran dry again if debris was clogging the tank outlet. But maybe if something settled back over the tank outlet, even the gas that was in the lines wouldn't flow on down to the carb because of a "vacuum lock," per se. I can get a good flow through the lines and hook them all back up and try to start it, but if I go back a minute later and disconnect the fuel line, nothing comes out again.
Just for the hell of it, I also disconnected the air inlet to the carb and sprayed some starter fluid into the system. I thought the thing would at least fire off for a few seconds, but it didn't even try to start.
Now I'm even more confused because I figured even if no gas was getting to the carb, the starter fluid would have at least gotten the thing to run for a second or two. The guy I got it from said it had never done this before and I believe him.
I pulled the wire off the spark plug and looked at the connector and it looks okay. I haven't taken the spark plug out yet because it looks like a real b***h to do so, but after the try with the starter fluid, I'm thinking maybe it's not getting any spark.
I'd appreciate any ideas anybody has. At this point, I'm thinking there's debris in the tank that's blocking the fuel flow and perhaps the engine's flooded and that's why the starter fluid didn't do anything. I find it hard to believe it would be a simultaneous fuel flow/spark plug problem. Probably the only way to get the crap out of the tank is to remove it from the scooter.
Last edited by planalp; 09-18-2011 at 04:41 PM.