busyeddie

hmm, my meter only goes down to 200 ohms as a minimum scale, and i used an earth under the seat, or the black cable in the loom, both gave the same readings, will have to have a better look later, or maybe try another meter.

well i dont know what to make of this; i checked the resisantances of the coils with my multi meter and they dont tally with the ones in the manual, not even close, with im sure means ive measured it wrong, because surely with these results it wouldnt run whatsoever? Pulser (white/red) - 1 ohm charge coil (brown) - 24.4 ohms charge coil (black) - 1 ohm what does this mean? am i incompetent at taking readings, or is this feasible?

nah im pretty sure its reading ok, as all the gears feel far too short if its revving ok. will get out to the garage soon and have a look with the multi meter

will check resistances later on, but as for top speed i dont know, the speedo drive from the front wheel appears to to broken, or square taper on the end of the cable is too short?? I will be overhauling the front brakes soon so will be looking at the speedo drive then

nah it stops at 7200 in gear or in neutral. seems weird that it hits that speed quickly and wont even crawl further up the rev range, its not unlike an modern engine would be when its hitting the limiter. checking the coils? will do, but how do i do that?

New spark plug changed nothing. any ideas?

the cdi is a 7 wire model and there is a red wire, and it has the 2H5 00 carb. Checked air filter, all ok I cleaned the carb, changed nothing I took out the baffle, took out the wadding, (brand new yamaha pipe by the looks of things) its louder, but no better Checked the spark the plug gap from 1.8mm to the 0.6 mm stated in the manual. Wahey!! it runs far more smoothly, and upto 7200 rpm But still will not get close to the red line May buy a new plug tomorrow as the gap made the difference Any other ideas?? Oh and how do i check the crankcase for being full of oil?? Ed

ok, where do i find the CDI? sorry ive never really pulled a 2 stroke apart as my RXS 100 ran lovely for the 9 months I had it.

As in the title really, just bought a restored 1979 DT 175 off ebay for £400, it runs ok once warm, pulling quite smooth from 2-6000 rpm, but then it hits a brick wall and wont go any further, any ideas? Any pointers much appreciated Cheers Ed