x 

Pro's trick

Troubleshooting Your Nitro Engine

Problem: Engine Won't Start 

Airflow is restricted

Fuel doesn't reach the carburetor

Engine and/or fuel system has an air leak

Fuel mixture needles not properly set

Glow plug fails to function

Solution

Clean air filter

Clean fuel filter

Inspect fuel tank, line and engine for poor seals

Return needles to factory-recommended settings

Replace glow plug and/or change glow plug filter

Problem: Engine Starts, then dies 

Idle is set too low

Low-speed needle is set to rich

Low-speed needle is set to lean

Clutch is binding

Glow plug is loose

Glow plug is fouled

Piston and sleeve are worn

Damaged bearings in the clutch bell

Solution

Adjust idle-speed screw clockwise

Lean out low-speed mixture

Richen low-speed needle

Take clutch apart and fix the problem

Tighten glow plug

Replace glow plug

Seal engine with high temp sealer

Clean or replace bearings

Problem: Engine bogs when given full throttle 

Low-speed needle is set to rich

Clutch engages too quickly

Glow plug is too cold

Solution

Lean out low-speed mixture

Replace clutch spring/shoes

Install a hotter plug

Problem: Engine doesn't idle correctly 

Engine might have air leak

Low-speed needle is set to lean

Solution

Seal engine with silicone

Richen low-speed needle

Problem: Engine bogs or dies at high speed

High-speed needle is set to lean

Fuel flow is restricted

Piston and sleeve are worn

Solution

Richen high-speed mixture

Clean fuel filter

Replace piston and sleeve