Mash Seventy Five - Table of Engine Troubleshooting

57
Table of Engine Troubleshooting
Trouble
Cau
ses
ese
se
Remedy
•
Engine cannot be started or stalls suddenly
Sparking
normal in high
voltage cable
and no
sparking in
spark plug
• Oil stained spark
plug
• Broken spark plug
magnetic core or
broken electrode
• Carbon deposit in
spark plug
electrode
• Incorrect spark
plug gap
• Remove, clean and
dry it
• Replace spark plug
• Clean out carbon
deposit
• Adjust the gap.
Normal
sparking to
spark plug,
poor cylinder
compression
• Leaking cylinder
head gasket
• Loose spark plug
• Seized piston ring
• Excessively worn
piston or broken
piston ring
• Serious cylinder
wearing
• Leaking intake pipe
• Damaged
crankshaft
sealing
• Tighten screw or
replace gasket
• Tighten spark plug
• Clean off carbon
deposit in piston
ring and ring groove
• Replace piston and
piston ring
• Replace cylinder
body
• Tighten or replace
rubber ring
• Replace sealing