Alright..I've had this RC for years, she's never given me a lick of trouble.....until now.
Getting the pig ready for spring, over the winter the orig battery has finally met it's demise so I just put a new one in this afternoon.
Last weekend I had taken the bike for a quick run down to the gas station to check the air pressure in the tires, it was running great.
It's been sitting in the garage all week until today..I put the new battery in, fired her up with the choke out and it didnt climb up in the revs like it normally does, it just idles and backfires...alot... If I push the choke in it dies, if I rev it a little, it backfires..I dont have any FI light on and like I mentioned, it was running perfectly last weekend. Did I nudge something changing out the battery? I should probably mention, I did have the battery charger on the battery while it was still hooked up in the bike, would this have caused anything?
anyone ever came across this before? Any help would be greatly appreciated!!
Ok..quick little update, yes I'm impatient sorry..I hate it when the RC is sick.
fired it up again, no backfire this time but choke still doesnt seem to be making the idle climb. Took it around the block, felt really low on power, feels like one cylinder...came home, squirted some water ont he pipes and sure enough, the rear cylinder isnt running..pipe was cold.
So..now I know it's only running on one cylinder but what would cause this? What should I be checking? Like I mentioned, it was running perfect last week..why down to one cylinder now? Is there something electrical i should be looking at before I yank the tank up to check the plugs?
Almost sounds like a fuel delivery problem.
Maybe water (condensation) in the fuel, from sitting all winter? Did you also fuel up when you went down to the service station, to check the tire pressure?
On the other hand, logic would indicate an electrical problem, if all you did is change out the battery. Do you run a PC? If so, did you properly [re]connect the PC's ground wire? And make double sure both battery terminal connections are clean, and tight.
Before pulling the plugs... do a quick test... to rule out fuel vs. ignition.
Lift the tank, and remove the top of the airbox. Leave the IAT sensor (atop the airbox cover) connected.
Start it up (if you can). Spray a wee bit of starter fluid (while it's running) down the stack for the rear cylinder. If it smooths out for a second, it's not an ignition problem, and you've probably got a fuel delivery problem. If the starter fluid does nothing, you've probably got an ignition problem, so pull the plug, substitute a know-good plug, and do a visual test for spark.
Let us know how this goes.
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I'm not a total idiot... there are a few parts missing.
I was born and raised in Mpls.
Back in the day... when we had motorcycles with carburetors... I'd run into this sort of thing. Every spring, I'd invariably have a float bowl (or two, or four) full of condensed water. Bike would fire, but miss like crazy. Drain the float bowls, and viola.
If I was a betting man, I'd say we're looking at a water-in-the-fuel problem here. Water found it's way up into the fuel rail (the portion of the rail near the rear cylinder). Until it cycles thru the rail, that rear cyclinder isn't gonna fire. I'd be pulling the tank and completely draining it into a clear container. Look for water to settle to the bottom of the container.
To get the water out of the fuel rail, pull the return line off of the fuel regulator. Then connect a bit of hose to the regulator, and route it into a clear container. Cycle the ignition switch on/off several times. Each time the fuel pump will run for a few seconds, forcing the contents of the fuel rail out the hose, into the container. Again, look for water to settle in the bottom of the container.
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I'm not a total idiot... there are a few parts missing.
Thanks for the input guys...I'm off to the garage to give it a shot, I'll post back with my results.
The tank was full to the brim with fuel and i had added stabil last fall when she went to bed. Like I had mentioned, it was running like a top so I found it weird that it would just quit. Underneath my rear seat is a mess of wires, it was like that when I bought it..I know I had wiggled some things around trying to clean it up a bit so I have sneaky suspicion it's something electrical.
Anyway..I'll certainly start with your suggestions!! Thaks for the help guys, I'll let you know what I find.
Damn..I made it worse...now she wont even start. I was wiggling around some wires, plugs, and now it just turns over...not even attempting to fire. The plugs are looking pretty wet and black so I'll run out and grab some new OEM ones..then check for spark...again..Can I just ground the plug on the top of the cylinder head like I would with any other bike?
Spark Plugs....Of all the things, it looks like it turned out to be spark plugs. Of course not anyone in town, including Honda has these plugs in stock so I pulled out the old, cleaned and replaced, fired right up and running great. That front plug is a real f&%ker to get to..not looking forward to doing that again when the new plugs I had to order get here.
Thanks for all the input guys...especially you pdfruth, greatly appreciated!
Need RC Help!!
"03 RC"
Linear Mode
