Possible Causes & Corrections

Check the following items:

• No voltage to fuel shutoff solenoid. Check electrical connections.
• Restricted air filter. Check and/or replace air filter.
• Faulty glow plugs, relay or PCM. Check and/or replace glow plugs or controls.
• Plugged fuel return system. Remove restrictions.
• No fuel to nozzles. Inspect fuel delivery system.
• No fuel to injection pump. Inspect fuel delivery system.
• Clogged fuel tank filter. Replace filter. See appropriate SYSTEM & COMPONENT TESTING article.
• Incorrect or contaminated fuel. Remove and replace fuel.
• Restriction in turbocharger inlet duct (if equipped). Remove restrictions.
• Incorrect pump timing. See appropriate SELF-DIAGNOSTICS article.