Discussion Starter · #1 ·
I know this has been beaten to death on these forums but the backstory for my quad is a little different. I have an 08 trx450er and have had it for about 6 months now. Been on about 6 rides most of them dunes. Never had trouble starting but took it out to sand lake Oregon and the second day I was out there it wouldn’t start unless I pop started it, and once I did that it would start when warm. I have the normal mods done it’s jetted correctly for full exhaust, aftermarket air filter with air filter pre-sleeve and cut box for the air filter. Upon returning I realized that after I had cleaned/ lubed my air filter I put the box on the wrong way (air box opening on lid at the front of the quad not at the rear) and also realized that I haven’t ridden in about a month and just threw gas in there like an idiot not realizing it was month old gas. After reading all these forums I know that a valve adjustment is a common thing, but what should my first logical step be in diagnosing this thing? Should I do all the regular maintenance steps like oil/ transmission fluid change, new gas, clean air filter, new spark plug first or should I go straight into looking at the valves?