When you’re trying to diagnose a problem on your car truck or motorcycle keep in mind just because it’s a new part doesn’t mean it isn’t broke or miss assembled
Yesterday I had a factory new sealed in boxed carburetor part that was Mis-assembled at the factory
A quick look at it before install and appeared to be the correct part for the application I was working on.
after assembly and reinstalling the carburetor there was a throttle issue I couldn’t attribute to just a dirty carburetor which is why the bike came in
Switching to another carburetor known to be good other than this one part I move the new part to that second carburetor and installed it .... and the issue followed
Carb back apart again and a close inspection of the New vacuum valve assembly and it was obvious what it happened
A spring that was supposed to be underneath the needle had been assembled on top of the needle pushing it down in the assembly instead of lifting it under spring tension, making the fuel needle about 5 mm to long it still fit just fine in the carb body but It completely messed up the air fuel and operation of the vacuum valve
New parts may be new but they’re not necessarily correct working or not broken until confirmed
Yesterday I had a factory new sealed in boxed carburetor part that was Mis-assembled at the factory
A quick look at it before install and appeared to be the correct part for the application I was working on.
after assembly and reinstalling the carburetor there was a throttle issue I couldn’t attribute to just a dirty carburetor which is why the bike came in
Switching to another carburetor known to be good other than this one part I move the new part to that second carburetor and installed it .... and the issue followed
Carb back apart again and a close inspection of the New vacuum valve assembly and it was obvious what it happened
A spring that was supposed to be underneath the needle had been assembled on top of the needle pushing it down in the assembly instead of lifting it under spring tension, making the fuel needle about 5 mm to long it still fit just fine in the carb body but It completely messed up the air fuel and operation of the vacuum valve
New parts may be new but they’re not necessarily correct working or not broken until confirmed