Cellboost 427W Manual Do Utilizador

6-7-06 - Fifth Proof

When engine trouble occurs, check the simple causes which, at first, may seem too obvious to 
be considered. For example, a starting problem could be caused by an empty fuel tank. Some 
general common causes of engine troubles are listed below. 

Engine Cranks But Will 

Not Start

• Empty fuel tanks.

• Fill fuel tanks

• Fuel shut-off valves closed.

• Open both fuel shut off 

valves.

• Poor fuel, dirt or water in the 

fuel system.

• Drain fuel system and 

replace with fresh, clean fuel.

• Clogged fuel line

• Clean or replace fuel lines.

• Spark plug leads 

disconnected

• Check to make sure that both 

spark plug leads are securely 

attached to the spark plug 

and that they are not 

damaged.

• Faulty spark plugs.

• Replace spark plugs.

• Faulty ignition module(s).

• Test and replace faulty 

ignition module. See engine 

manual.

• SMART-SPARK™ 

malfunction (applicable 

models).

• See engine manual.

• Carburetor solenoid 

malfunction.

• See engine manual.

• Diode in wiring harness failed 

in open circuit mode.

• See engine manual.

• Vacuum fuel pump vacuum 

malfunction, or oil in hose.

• See engine manual.

• Vacuum hose to fuel pump 

leaking/cracked.

• Replace hose.

• Battery connected 

backwards.

• Remove battery connections 

and reinstall.

Engine Starts But Does 

Not Keep Running 

• Restricted fuel tank cap vent. • Clean fuel tank cap.

• Replace fuel cap

• Poor fuel, dirt or water in the 

fuel system.

• Drain fuel system and 

replace with fresh, clean fuel.