MotorVac CarbonClean System MCS 245 - Manual (Page 46)

Fuel Volume Test
1.
Verify that Setup Steps 1-10 from the appropriate previous chapter have been
completed for the specific fuel system type to be tested
.
2. Verify that the vehicle’s engine is running and check connections for leaks.
3. Press and hold the Fill/Purge button.
• You should observe a strong flow of fuel from the vehicle into the units fuel reservoir. The Fuel
Level Window should show a 1/4 tank in the unit’s fuel reservoir within 15 to 20 seconds. This
indicates sufficient fuel volume.
• If the vehicle stalls during this test, adjust the gate valve on the T-adaptor (#060-4500) with a 3/4 turn
in the counterclockwise direction to close it. Re-start the vehicle and slowly turn the gate valve
clockwise to open it until the engine begins to labor slightly while idling. Resume the test by
repeating
Step 3 .
4. Release the Fill/Purge button.
• If the proper fuel level was not reached within 15 to 20 seconds, this could indicate a blocked fuel
filter or fuel line on the vehicle.
5. Return to the appropriate previous chapter, Fuel System Cleaning Procedures , to
continue the cleaning process. Otherwise, conclude the test as described below.
6. Turn the vehicle off.
IMPORTANT
Close the gate valve on the T-adaptor and wrap a shop
towel around pressure fittings before disconnection to
protect against residual fuel spray.
7. Disconnect the battery leads, hoses, and adaptors. Return the vehicle fuel system to
its normal operating condition by re-connecting the vehicle fuel lines.