G'day! My MC19 is like a precocious child, it has been nothing but a headache since I bought the thing, so I figured I'd make a thread about it, and see if anybody has any ideas as to how I can get this puppy working properly again. My beastie is a 1989 Honda CBR MC19. She worked fine when I bought the bike. About a year after I bought her, I started getting random losses of power, and the bike wouldn't turn over (starter motor works fine). After several hundred dollars worth of towing fees over a year, and a couple of 'services', a new battery, I was told by the mechanic that it might cost at least $400 for them to have a look at it, and that's if they only need to clean the carbies out. After a while I noticed that when she loses power, it's when the day is hot, or I've been riding it hard for an extended period of time (ie. tuesday learner rides), even if the thermostat is only 3/4 of the way up. (In fact, it never shuts down when the thermostat is at 100% heat, which I find wierd) She doesn't lose power WHILST I'm riding it hard, she only does it AFTERWARDS, like if we are going on the freeways, or riding it back home past the MCG. One time it wanted to run out of power, instead of doing what I normally do, which was to drop gear and slow it down a bit, I decided to do the OPPOSITE of what I normally do... I went up a gear, and opened the throttle all the way. It sounded like it was trying to vomit, then gave me a MASSIVE boost of power, bringing me up to the maximum speed it could do, almost throwing me off of the bike. I only wish it was able to do that at the lights when I try to take off quickly. Another thing, she lags between when I open the throttle and when I actually get some power out of her... I get completely decimated by fast riders at the lights these days, no matter how well I ride her. I've been using 92 RON petrol in her since day1, which is what the mechanics and dealer have recommended. About six months ago I chucked some 'fuel line cleaner' into the empty tank (it had completely died at this stage), tried turning her over, nothing. I filled up the tank, and gave it another shot. She worked perfectly fine, and had a little bit of grey smoke coming out the exhaust (which she never does). I've heard that the MC19's have a 'gravity fed' fuel system, and that if you bypass the fuel pump, you get minimal power, but at least it will run. How do I check if my fuel line is blocked? I can't afford half a thousand bucks at the mechanics for 'labour' (aka. trial and error for three hours). Another interesting thing to note, is that one day when I ran out of power (on a 30+ degree day), some random JC-Decaux employee at the bus stop opened my fuel tank, did some lil funky trick to get the key out, left the tank open, and it started straight away. WHAT THE HELL?!? I used this trick once to get me home when I lost all power after a netrider ride, so I'm completely baffled as to what opening the fuel tank does to fix it. If anybody has any clue as to what's wrong with my bike, based on this description, please let me know, it's driving me completely mad, Geoff Taylor motorcycles have no clue what I'm talking about over the phone, and I can't afford to fork out half a thousand bucks for them to spend time trying to figure out what's wrong with it, when they might not actually fix it. Cheers, NrKy.