custom creator Posted June 11, 2012 Posted June 11, 2012 Hi guys... had a topic about this tzr 250 of mine 2 weeks ago. A first didnt want to start, but with every bodies help it finally did..... but new problem poped up. It seems to be reving fine and very high, but ones you go on the road it feels as if its running on a third of its power. The jets and carbs are clean, the needle positions are on the 2nd slot from the top, i already tried moving it to the 3rd, problem only get worse. reed valves seem to be fine, only thing that seems strange is that the one exhaust seems to be smoking more than the other? dont know if it relevant? Its just this power issue that i have right now. but like i said it revs beautifully...
Moderator Cynic Posted June 11, 2012 Moderator Posted June 11, 2012 Reving high? whats high, 6k 7 k. The exhausts, ideally you should get roughly the same from each pipe. Is the link on the powervalve good.
Moderator mervin Posted June 11, 2012 Moderator Posted June 11, 2012 or for that matter is the power valve working at all, can yuo hear it go through it,s cleaning cycle when you switch the key on?
Moderator Airhead Posted June 11, 2012 Moderator Posted June 11, 2012 which side smokes more...the right (clutch) side ?
custom creator Posted June 12, 2012 Author Posted June 12, 2012 (when sitting on bike)The left side smokes more, magneto side... and when i say it revs high i mean 10 000rpm +. almost as if nothing is wrong with it. For the power valve bit, when the bike iddles i can see how the pwer valve adjusts its self. but the bike doesnt have a battery so i cant tell you if it moves when the key is turned on. but it starts fine and everything.
Moderator Airhead Posted June 12, 2012 Moderator Posted June 12, 2012 is there slots in the maneto flywheel...any chance you could spray through the slots? spray WD40 at the seal when the engine is running...listen for a change in engine speed / tone to test the seal
Moderator Cynic Posted June 12, 2012 Moderator Posted June 12, 2012 Sounds like carb to me still, my TDR went off the boil and all it took was 1 quarter of a turn on one throttle stop screw. Wasn't even enough to affect the idle speed but it made a big difference in the way it rode. Are you sure the jets/carb are clean, ( i have known people clean the outside before )
custom creator Posted June 13, 2012 Author Posted June 13, 2012 i have stiped the carbs more than 10 times and its clean alrigh. took reed valves off to inspect the rubber mounts for craks, nothing wrong there.
Moderator Cynic Posted June 13, 2012 Moderator Posted June 13, 2012 What are the plugs like. You still haven't answerd the pv question. Are they both working as a pair, same with the carbs are they properly balanced, any leaks at the exhaust. You really need to be thoughrough, when these bikes were new their power output and torque were off the chart compared to everything else. A few of the opposition made a bit more go but at the expence of most of the engine's torque. Your carbs, exhausts etc need to be absolutely right. Not nearly, or somewhere near but bang on. You have questioned the main jet in the past did you sort that out?
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