NQ50-only runs with finger over air intake

jxnslotcar · Post by **jxnslotcar** » Sun Jun 29, 2008 6:44 pm

Hi,I am new here. My name is Jim and I live in Jackson,Mi. I picked up this 1986 Spree as a non runner. I have gone through the old posts and have not found a solution for the problem I have with this scooter.
I give it a shot of carb cleaner to actually start it. Then I have to keep my finger over the air intake at air cleaner cover to regulate the air flow otherwise it revs up until it runs out of fuel in carb. If I keep my finger over the air intake,I can keep it at low enough idle to keep it running. As soon as I start to take my finger away,it will rev up higher.
I have taken apart carb and checked for blockages and found none. I checked the bystarter for resistance and it is withing spec. It is also getting warm after running awhile. The only thing I have done wrong is mixed some regular 2 cycle oil with the injection oil,but I don't think it would cause this problem. I check with carb cleaner around carb mounting gasket as well as oil pump for leaks and found none. I check vacuum pod with vacuum pump and I have gas coming out and into carb bowl. Adjusted carb air screw out,in and in between to no avail. I have adjusted throttle stop as well. I downloaded the tech manual from this site and followed directions. Please help as I am missing something simple here and getting frustrated. Thank you Jim

hondaman · Post by **hondaman** » Sun Jun 29, 2008 7:23 pm

If you do not have a decent air filter installed it will not run. Make sure you have that. Then check to make sure your carb is on tight with no air leaks between it and the manifold.

jxnslotcar · Post by **jxnslotcar** » Sun Jun 29, 2008 8:59 pm

I do have an air filter installed. I also made sure that carb is tight and gasket is installed right. I sprayed with carb clean to make sure that there are no leaks. Anything else I might be missing? Thanks again for your time and your suggestions. Jim

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Jun 29, 2008 9:53 pm

Clean the carb again.

seacook · Post by **seacook** » Mon Jun 30, 2008 6:51 am

make sure that your needle assembly is sitting in there correctly. If its not and the case that holds it is not down far enough then it will rev high...

jxnslotcar · Post by **jxnslotcar** » Fri Jul 04, 2008 9:45 pm

I wanted to thank all of you who gave me some hints. I did all that you suggested and IT RUNS! I still have some issues as it wants to cut out when I give it full throttle-need to figure that out,but I am happy that it runs! Now-got to get the brake cables freed up,get some plastics,ect. Thanks again guys,I really appreciate your help.