Crack-Vac Model 100G Manual
Chapter 8 Troubleshooting
©2020 by Crafco, Inc. All Rights Reserved
Troubleshooting 8-1
8.0 Troubleshooting
to help you troubleshoot the problems you may encounter with the
Model 100G CrackVac. Also see the Engine Operators Manual for further troubleshooting.
Problem
Possible Cause
Remedy
Engine will not start or stalls.
No Spark
•
Check electric system for
defective wires, switches, etc. See
Engine Operators Manual.
Inadequate supply of fuel
to carburetor.
•
Check fuel valve and lines, fuel
filter and fuel pump. See Engine
Operators Manual.
Relief valve not functioning
properly.
•
Use a vacuum gauge to test
tension on the relief valve spring.
The relief valve should open at
6”
HG. Adjust as necessary.
•
Valve stuck in closed position,
determine cause and repair or
replace.
Engine air intake restricted.
•
Replace air filters.
Engine d
oesn’t spin properly
when cranking.
Starter problems.
•
Repair or replace starter. See
Engine Operators Manual.
Low battery.
•
Charge or replace battery.
Restriction from rotary
blower.
•
Check for clogged hoses and/or
plumbing, check for kinked hoses
and remove any restrictions.
•
Check for dirty air filters. Clean or
replace as needed.
•
Check blower lobes for corrosion
or restrictions. Rust can form on
blower lobes causing them to turn
less freely. Use penetrating oil or
rust preventive oil on lobes to
keep them spinning freely.
Engine misfire or loss of
power.
Dirty carburetor.
•
Clean/Service Carburetor. See
Engine Operators Manual.
Defective fuel pump.
•
Replace fuel pump. See Engine
Operators Manual.
Loss of suction at the
Vacuum Wand.
Kinked or plugged hose.
•
Clear blockage or replace hose.
Dirty air filters.
•
Clean or replace air filters.
Table 8-1 Trouble Shooting Guide Vacuum System
Summary of Contents for 60800N
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