mnduner Posted May 31, 2006 Report Posted May 31, 2006 (edited) 2000 stock motor never been apart. 35mm pwk trinity intake. clamp on uni filter. t5s. stock gearing. 8 padle haulers. so up and down the road everything is good. took it took st anthony for memorial weekend. 4700+ ft here im at around 800ft. so it was rich and i tried getting jets but didnt have keihin. girlfried rode teh shee like two days. i rode it and noticed missing in midrange wont pull at all from 1/2-full throttle. drop down through gears get it singing in first and keep it there it pulls good. removed coil ground and scraped off paint and reattatched,, now good. attempted to run up thunder dune (big and steep but not huge) screaming in 3rd at the bottom only got like 1/2 way up and ran out of power had to turn around. my crf450 will pull 5th to the top so i need to jet it yet. and will check compression. im pissed at it now very dissapointed. what else should i be looking for possable causes of lack of power, and missing? what should my compression be? if i need to redo teh top end which i probably will i might as well get a port job done while its apart? whats next for me? ps im cheap so no sugestions of 10mil sabertooth and sh!t like that i just whant it to run good. Edited May 31, 2006 by mnduner Quote
ssanddemon Posted May 31, 2006 Report Posted May 31, 2006 If you ran it richer than crap for a couple days, I bet the plugs are f'ed up. Try a new set? Quote
mnduner Posted May 31, 2006 Author Report Posted May 31, 2006 she rode it for two days then i changed plugs and we went straight to thunder like 15-20mins Quote
ssanddemon Posted May 31, 2006 Report Posted May 31, 2006 OK, so plugs are good... take a look at the reeds? Keep in mind that a rich mixture won't burn up the motor. I would def. look at the reeds and make sure they are laying flat. You need good reeds to get an accurate compression test anyway. So then do the comp. test, I bet it's fine if it is starting up ok. It could be the CDI, ign. pickup or magneto killing the spark as well. Do a search for Meat's electrical FAQ page for very good test proceedures. But I bet if reeds are good, compression will also be good and that you have something electrical going on. Quote
Justintoxicated Posted May 31, 2006 Report Posted May 31, 2006 you might be in need of a new topend if it is an 2000 that has never been apart. or it might be that you have 35mm carbs on a stock motor! Quote
Screamin_Banshee Posted May 31, 2006 Report Posted May 31, 2006 Thats a serious jump in elevation bro. I would put my money that its all in the jetting. Tune her up, and she'll make the hill. Quote
mnduner Posted May 31, 2006 Author Report Posted May 31, 2006 (edited) i checked reeds before the trip there are good. its a SINGLE 35mm. i was thinking electrical too but how it just lost power it wasnt like a miss at all. ill get the jetting taken care of first. and hopefully thatl be it. unfortunately i cant run up any big dunes here in mn becuase there are none. stupid crapy no dunes...mgmmff thanks pete Edited June 1, 2006 by mnduner Quote
Animalman294 Posted June 1, 2006 Report Posted June 1, 2006 Ya, the change in elevation is kinda drastic. I was told that if you change elevation difference you need to change one jet size per 1000' (just a ballpark figure). Then do a plug chop at the new elevation to see if it is right. Good luck man............. Quote
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