Inspecting Compression System; Cleaning Fuel Tank Filter; Cleaning Fuel Tank - TOHATSU TLDI 40 Service Manual

Cleaning Fuel Tank Filter

q Fuel pickup elbow
w Filter
Turn q to the left to remove and clean w.

Cleaning Fuel Tank

Clean the fuel tank whenever there is a buildup of
water or foreign matter.

4. Inspecting Compression System

Measuring Procedures
Use the following procedures to measure the
compression of the individual cylinders.
1. Fully charge the engine battery.
2. Start engine and idle for 3 minutes to warm.
3. Unlock the stop switch.
4. Remove all spark plugs.
5. Remove all air injector w and fuel injector e
connectors.
Accurate compression readings are only possible
when all w & e connectors are disconnected. It
should also be noted that the ECU records detailed
information on
disconnected during each inspection. Refer to the
section on the TLDI self-diagnosing function for
more information.
6. Attach the compression gauge r into the spark
plug hole (only one at a time).
7. Use the starter motor to turn over the engine.
Engine speed: approx. 400 rpm for at least 5 seconds
(Note that throttle position does not affect compression
readings.)
• Measure the compression for all cylinders
• Confirm that all compression readings conform to
specifications.
Rated compression:
830 kPa (8.5 kg/cm
Results and Steps to Take
Repair or replace components as necessary when the
readings fall under the following categories.
• Below specified compression:
• Difference between cylinders exceeds 103 kPa
(1.05 kg/cm 2 , 15 psi)
• Compression is abnormally high.
which connectors
, 120 psi) ±10%
2
were
3-4
q
w
r
w
e