Troubleshooting: 7-6
5.0 Runs rough at high speed
5.1 The spark plug(s) are
faulty.
Remove and inspect the plugs. Clean or replace as
necessary.
5.2 The spark plug wire(s) are
faulty.
Inspect the wires and connectors for damage or
loose connections. Repair or replace as necessary.
5.3 Inadequate fuel supply to
the carburetor.
Check if the fuel pump is mounted in a vertical
position near the fuel source. Correct if necessary.
Check for blockage in the lter. Repair or replace as
necessary.
If operating altitudes have changed, contact your
distributor to have the engine carburetor jets
checked.
6.0 Runs rich. (Black smoke)
6.1 The air lter is dirty. Inspect and replace as necessary.
6.2 The choke is partially
closed.
Inspect and adjust or repair as necessary.
6.3
Excessive fuel to the
carburetor.
Check to see if the proper fuel pump is installed.
If operating altitudes have changed, contact your
distributor to have the engine carburetor jets
checked.
7.0 Engine overheats
7.1 Poor ventilation in the van. Open all the van doors.
Install a roof vent in the van.
Remove any dividers or other objects impeding airow
around the truckmount.
7.2
Low oil level. Check the level and ll as necessary.
7.3 The engine rpm is too
high.
Check the engine rpm. Adjust as necessary to run at
3,150 rpm under a vacuum load of 14” Hg.
7.4
Excessive back pressure
on the engine exhaust.
Inspect for blockage in the heat exchanger. Clean or
replace as necessary.
To Next Page
Loading...
