Hey there folks - been reading this thread with great interest as I'm experiencing similar issues with my '99 Busa...
Mine was off the road for about 6 years after being run off the road by a little muppet car driver/thief who did a runner as soon as he saw me hit the deck...
I won't go into the long, boring story, but this year I finally had the chance to get her back on the road, and with the massive assistance of a young mechanic I know, replacement parts were sourced off Ebay and my Busa grumbled back into life.
I hadn't planned on having her off the road for so long, so didn't prep her for the hibernation, sadly... End result - battery and alarm dead, fuel was off, tank was rusting inside, and the fuel pump was seemingly dead as well (C41 on the FI). Got another battery on her, and my mate stripped out the old alarm which refused to function now... We replaced the fuel pump with one I'd seen on Ebay and after a fresh tank of fuel, cleaning of injectors etc. new oil and plugs, she fired up
fairly sweetly with no FI warnings flashing up. Two days later, my mate calls me up to tell me the oil cooler's knackered and has spat the contents down his driveway. Ebay to the rescue again.
After this last hurdle (we thought) the bike was running much, much better, so I took it for a little test run around the block and it would run ok for a bit, then bog down, as if the fuel wasn't flowing properly... After much reading about the pros and cons of de-rusting a fuel tank, thinking this was the problem, I opted for a clean replacement tank off Ebay. This was a massive improvement, but still bogging down under revs. My mate spent another day cleaning and replacing fuel lines, injectors etc. - adjusting and readjusting the TPS, even the breathers from the tank, which I knew from previous bikes could cause problems.
Booked it in for MOT, picked it up from my mate's and got a tank of fuel in her before heading to the MOT place. She bogged down on the way there, after a good 5 or 6 miles of running about for fuel etc. and then refused to start. Phone call to the bike shop and he came to recover the bike. Chap in the shop had worked on a few Busa's apparently, which cheered me up so I left it with him.
When I picked the bike up from its MOT it promptly broke down again (same fuelling problem) about 100yds away and I had to push it back to the guy's shop. He reckoned it was the fuel pump (yes - the replacement one!), so he had the bike back in to strip the pump down and take it from there.
A few days later, the bike was ready so I went to collect it and paid my bill - OUCH!
100yds down the road, it conked out again. Pushed it back. Not happy. Left it with him again...
Phone call - "it's a fuel line under the tank that's kinking - I've replaced it with the right hose - all sorted, mate..."
Picked it up, 100yds again and nothing.
He now reckons, after a couple of months of tinkering with this and that, that the fuel pump is 100% ok, but the battery's on the way out and there could also be a problem with the CDI, which is causing the bogging down under revs - she'll sit there happily ticking over, but the minute you put some load on her, she bogs down and dies again...
Lucid - your suggestions about the electrics sound spot on... If the fuelling appears ok, then it
has to be electrical.
If it IS the CDI, the guy in the shop reckons he can get a replacement quite cheap, but he's got a new battery as well, and he's got another Busa coming in in a week or so, so he can swap the CDI with a known working unit and see if that cures it before shelling out on a replacement unit...
I'll keep checking on here to see if the OP, jordinion, had any success fault finding the problem, and if Chris_IPTE has any joy as well with his...
A guy at work suggested that I just break the bike for parts and try and get some money back, but it would break my heart getting so close to having her running again - and with the one
brief ride I had on her, I know there can't be much left to sort out...
Fingers crossed for us all...
Dave.