State 2 Full Throttle Engine Revolution - TOHATSU MD 70-90C2 Service Manual

O
Troubleshooting
K
State 2 Full throttle engine revolution speed is low, engine revolution speed falls off, or engine stalls.
Check battery cables for
defective contact, and
ground lead wire securing
bolt for looseness or
Normal?
Check throttle position sensor
and crank position sensor
connectors for connections.
Normal?
Check throttle valve for bend,
and shaft if it is seized.
Normal?
Fully open throttle to check if
advancer arm goes to full
open position.
Normal?
Check compression pressure.
Normal?
Check ignition system, fuel
system, lubrication system
and/or cooling system.
9-22
YES
YES
YES
YES
YES
NO
Repair or replace
defective parts.
NO
Repair or replace
defective parts.
NO
Replace throttle body.
NO
Adjust throttle cable.
NO
Disassemble engine and
check reed valve, piston rings
and cylinder head gasket.
TLDI 75/90C2 2010