Tuning issues please elp.
I have a 01 trx 400 xe. I have been fighting this thing for 2 years when I bought it.
Once it is warm it runs, but last year it wanted to die when it was a long hot ride. I live and ride at 4000 to 6000 " ASL
I have replaced the intake boots, Just cleaned the carb. I dont know what all the jets are. The main is a 155 I believe as my jet measuring tool has a 150 and 160, the 150 is kind if loose but 160 does not fit. it must be a 155. I have replaced the plugs, coil and added a larger oil cleaner.
There are stickers that say hot cam on the quad but I have no idea, the last owner said it had them. looks to be a slopon pipe and the airbox has a clear vented lid. big air cleaner.
It is hard to start. There seems to be a lot of fuel mist when I rev it with the air cleaner boot off. someone told me this is normal before but I am not sure.
There are 2 hoses that connect to a tee on the side of the carb. I plugged the end of that hose and it ran better. It runs much better without anything connected to the cab as far as air cleaner boot and filer. does this hose connect to something? I have tuned many things but this quad is screaming tannerite.
Last edited by Michael Christopherson; 03-24-2019 at 08:03 PM.