Chosen Solution
I recently purchased a Baja DN250 (GY6 250cc) for 300.00 that has been abused and beaten. I have been able to get it to start and idle no problem, as I have replaced the cracked intake and replace the carb with a brand new one. I have replace the fuel lines and the vacuum lines, clean the gas tank place fresh 87 octane in it. I start it and it idles fine but if I give it to much throttle it dies completely, ( too much throttle is just barely above idle) also I’m running a stock air intake and air filter system. It does this with the air intake installed and without it not installed too. Can anyone help me get the engine issue figured out so that I can move on to the gearbox not shifting?
After replacing the factory main jet that came with the carb from amazon a week ago with a #145 the engine will now rev all the way out. The engine now being able to rev out has enabled my transmission to shift in the reverse gear and backup but it has an issue still as it will not shift into forward. The forward shifting issue I feel may be the abuse shift cable housing and cable, so I plan to replace it with a brand new cable to troubleshoot.
