Scotty, I just bought a 2002 Yamaha Raptor 660 Engine and a new Carb for it and it won't start. It…

Fare_Jare

Scotty, I just bought a 2002 Yamaha Raptor 660 Engine and a new Carb for it and it won't start. It turns over and backfires evey so often. Does that carb just need adjusted or ?

Comments (5)
No. 1-5
Fare_Jare
Fare_Jare

Yup its the duel carb model. I sent it into a shop and told the guys that it's duel carb with a new spark plug and that I can't get it starter ( obviously the carb doesn't come set so I worked on setting it right and it didn't start from all day working on it so I just sent it into a shop ). And I also told them that it could be a wiring issue due to a new engine being put in. There's no black soot on the spark plug but I might have to go in and put a new gasket.

Believe231
Believe231

Don't rule out a clogged fuel delivery system or an issue with the shut off valve either! Be sure the spark plug is the correct one and is not fouled. That's a dual carb model, right? Be sure the carbs are synched. Also be sure it has the correct spark plugs, the carb boot isn't torn and is properly installed, and the valves are properly clearanced. Then check the spark to be sure it's nice and strong as I've seen a bad spark plug wire cause issues with misfiring, a black sooted spark plug would point to an ignition problem.

Fare_Jare
Fare_Jare

I rode it once then it just bogged out going up a hill like it wasn't getting enough gas so I think its the carb

Fare_Jare
Fare_Jare

I sent it to a local shop to just fix it up, Thanks.

ScottyKilmer
ScottyKilmer

Editor

yes, they do not come ready to run out of the box. They need setting and pray the engine is good, used ones for those often are questionable. good luck