[quote="edarter"]I don't have any ideas based on sound engineering principles, but model aircraft 2 stroke engines won't transition from tickover to full power if the bottom end mixture is out.... that coupled with the fact you seem to have cooked it may suggest you are running way too lean bottom ...

Hi dude , So sorry to here the crm broke you and your finally giving up . Too bad ,, If all your after is $500 then youl easily get the for the engine / cdi/and regulater , If you did sell these parts then youll have a lovely oppertunity to jam enouther engine in the bike you have left , Like a ...

I have this 89 in South america, low miles bike with a new motor (bottom to top) and I just screwed up the top end somehow, will need at least to be rebored and a piston. I'm through messing with this thing, going to sell it as is. The parts worth anything? It was a pretty nice bike but it has been ...

This thing and I have had our final battle, I'm threwww. I have an 89, NEW FU*&^%$ motor from LT. I have had some freakin carb problem that no one could fix for months, lately I decided to give it another go. I eliminated the \"racing\" problem, but it seemed not to want to rev right this time ...

i think the racing engine problem is to do with the carb but if all looks well remove the reed valves and check there ok and clean as this will cause the problems you describe, hope this helps

I checked the reeds a few months ago and they were like brand new. I permatexed the joints and stuck it ...

I have an 89 that want's to live again but it's having some carby problems. The main problem was a BAD surging problem where the engine would race uncontrolably till I did someting drastic of one form or another to shut it down. So I have determined there are really no air leaks anywhere, non ...

Well, there is carbon in the combustion chamber also. Seems since I changed the plug and that had no effect, that if the carbon is a problem its in the combustion chamber. That though, is not what is causing the thing to race like a maniac, that is air and or gas. The carbon is only a sub-symptom. I ...

Well sports fans... im running out of ideas here. I have checked or done the following.

sprayed carb cleaner on all connections and got nothing except a slight increase when i hit the joint going from the back of the carb to the horn that connects it to the air cleaner. No reaction from any engine ...

Well thats an idea allright, 180 out. I think though, that the fact that the problem seems intemitant would rule that out. Seems that if it were something that concretely wrong, that the problem would be consistent, allways the same. I will though certainly check that, and thanks for the new idea ...

<quoted material> You sound like your not stupid and i expect you have checked all the obvious things ,,Like 'there is a tension return spring on the cable above the carb slider and its strong enough to return the throttle cable and slider to a neutral position ,(idle)And you have checked the ...

I'm currently living in South America and have an 89 CRM that has a brand new engine in it (ouch). When I bought it a few months ago it had been sitting for years with low milage. It ran fine for a while but a couple of bearings went south apparently due to moisture corrosion in a humid climate over ...