PORTO-SCREED PSH — TROUBLESHOOTING (ENGINE)
TABLE 4. TROUBLESHOOTING (ENGINE)
SYMPTOM | POSSIBLE CAUSE | SOLUTION | |
|
|
| |
| Spark plug bridging? | Check gap, insulation or | |
| replace spark plug. | ||
|
| ||
|
|
| |
Difficult to start, "fuel is available, but no | Carbon deposit on spark plug? | Clean or replace spark plug. | |
|
| ||
SPARK at spark plug". | Short circuit due to deficient spark plug | Check spark plug insulation, | |
| |||
| insulation? | replace if worn. | |
|
|
| |
| Improper spark plug gap? | Set to proper gap. | |
|
|
| |
| ON/OFF switch is shorted? | Check switch wiring, replace | |
| switch. | ||
|
| ||
|
|
| |
| Ignition coil defective? | Replace ignition coil. | |
|
|
| |
Difficult to start, "fuel is available, and | Improper spark gap, points dirty? | Set correct spark gap and | |
clean points. | |||
SPARK is present at the spark plug". |
| ||
|
| ||
| Condenser insulation worn or short | Replace condenser. | |
| circuiting? | ||
|
| ||
|
|
| |
| Spark plug wire broken or short circuiting? | Replace defective spark plug | |
| wiring. | ||
|
| ||
|
|
| |
| Wrong fuel type? | Flush fuel system, and replace | |
| with correct type of fuel. | ||
|
| ||
|
|
| |
| Water or dust in fuel system? | Flush fuel system. | |
Difficult to start, "fuel is available, spark |
|
| |
Air cleaner dirty? | Replace air cleaner. | ||
is present and compression is normal". | |||
|
|
| |
| Choke Open? (Engine cold) | Close Choke. | |
|
|
| |
| Choke Closed? (Engine warm) | Open Choke. | |
|
|
| |
| Suction/exhaust valve stuck or protruded? | ||
|
|
| |
| Piston ring and/or cylinder worn? | Replace piston rings and or | |
| piston. | ||
Difficult to start, "fuel is available, spark |
| ||
|
| ||
|
| ||
is present and compression is low". | Cylinder head and/or spark plug not | Torque cylinder head bolts and | |
| tightened properly? | spark plug. | |
|
|
| |
| Head gasket and/or spark plug gasket | Replace head and spark plug | |
| damaged? | gaskets. | |
|
|
| |
| Fuel not available in fuel tank? | Fill with correct type of fuel. | |
|
|
| |
| Fuel filter clogged? | Replace fuel filter. | |
No fuel present inside priming bulb. |
|
| |
Fuel tank cap breather hole clogged? | Clean or replace fuel tank cap. | ||
| |||
|
|
| |
| Air in fuel line? | Bleed fuel line. | |
|
|
|
PAGE 20 — STOW
