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Power System Troubleshooting
PROBLEM
Engine hard to start or will
not start.
Lack of engine power.
Low battery output.
Low battery charge.
800.392.2686
CAUSE
No fuel.
Wrong fuel.
Leak in fuel line.
Dirt or water in fuel system.
Air in fuel system.
Fuel filter is dirty.
Wrong weight engine oil.
Restricted air filter.
Injectors dirty.
Operating at high elevation
Wrong fuel.
Dirt or water in fuel system.
Air in fuel system.
Fuel filter is dirty.
Wrong weight engine oil.
Restricted air filter.
Injectors dirty.
Low engine compression.
Engine is too hot.
Overcharged battery.
Defective battery cell.
Cracked battery case or broken
terminal.
Dirty or wet battery top, causing
discharge.
Loose or glazed alternator belt.
Alternator not charging.
Loose or corroded battery cables.
Defective battery cell.
RG74DXH Operator · Service · Maintenance Manual
Add fuel.
Use correct fuel.
Check fuel line and connection.
Remove fuel, clean tank, and replace
fuel filter.
Remove air from fuel system.
Replace fuel filter.
Use correct oil.
Clean or replace air filter.
See your Rayco dealer.
Ensure map sensor (manifold absolute
pressure sensor) is in good working
order
Use correct fuel.
Remove fuel, clean tank, and replace.
Remove air from fuel system.
Replace fuel filter.
Use correct oil.
Clean or replace air filter.
See your Rayco dealer.
See your Rayco dealer.
See your Rayco dealer.
Clean and tighten battery cables.
Replace battery.
Clean battery top.
Tighten or replace belt.
See your Rayco dealer.
Clean and tighten battery cables.
Replace battery.
Troubleshoot
SOLUTION
39
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