2008 Honda Aquatrax ARX1500T3/T3D factory service manual, Page 443Get this manual
TROUBLESHOOTING
ENGINE LACKS POWER
1Engine Speed
Accelerate lightlyDoes the engine speed increase?
- GOTOSTEP2
Air intake duct or air box obstructed Restricted fuel flow Clogged exhaust system Restricted fuel tank breather line
2Engine Knocking
Accelerate or run at high speedIs there knocking?
-Use of poor quality fuel
Worn piston and cylinder Excessive carbon build-up in combustion chamberIgnition timing too advance (Faulty ECM)
3Spark Plug
Remove and inspect the spark plugsAre the spark plugs fouled or discolored?
Plug not serviced frequently enough Incorrect spark plug heat range
- GO TO STEP 4
4Engine Oil