Friend of mine has problems starting his '03 Grizz when it is cold. Any advice from other owners would be appreciated.
Thanks

 

Here are a few things you can check for, but if it were my guess I would start with the plug/ wire then go to the fuel/ carb. Post back with progress/ questions.

STARTING FAILURE/HARD STARTING

FUEL SYSTEM
Fuel tank

Empty

Clogged fuel filter

Clogged fuel strainer

Clogged fuel breather hose

Deteriorated or contaminated fuel

Fuel ****

Clogged fuel hose

ELECTRICAL SYSTEM
Spark plug

Improper plug gap

Worn electrodes

Wire between terminals broken

Improper heat range

Faulty spark plug cap

Ignition coil

Broken or shorted primary/secondary

Faulty spark plug lead

Broken body

CDI system

Faulty CDI unit

Faulty pickup coil

Faulty charging/rotor rotation direction coil

Broken woodruff key

Carburetor

Deteriorated or contaminated fuel

Clogged pilot jet

Clogged pilot air passage

Sucked-in air

Deformed float

Worn needle valve

Improperly sealed valve seat

Improperly adjusted fuel level

Improperly set pilot jet

Clogged starter jet

Starter plunger malfunction

Air filter

Clogged air filter element

Switches and wiring

Faulty main switch

Faulty engine stop switch

Broken or shorted wiring

Faulty gear position switch

Faulty start switch

Faulty rear brake switch

Starter motor

Faulty starter motor

Faulty starter relay

Faulty starter clutch

 

mine had trouble starting, turned out to be the plug

 

change the plug and since its colder out now, you may be lean. Richen it up a little on the idle ckt, I like a 1/2 turn out on the fuel screw.

 

My friend had that problem on his raptor. He had to flood it to get it started. We tried a plug, and messed with the carbs. Then decided to check the valve adj. 4 out of the 5 were out of adj. we adjusted them and put it back togather and it runs great.

I would definetly start with the plug first though.

 

Thanks everyone,
Adjusted the valves. We will see how much that helps when we get colder weather.