- Never run the engine with the air cleaner removed: if anything is sucked into the inlet manifold it will go straight to the combustion chambers, or jam behind a valve.
- Never wash a diesel engine: the reaction of a warm fuel injection pump to cold (or even warm) water can ruin the pump.
- Never operate a diesel engine with one or more fuel injectors removed unless fully familiar with injector testing procedures: some diesel injection pumps spray fuel at up to 1400 psi-enough pressure to allow the fuel to penetrate your skin.
- Do not skip engine oil and filter changes.
- Strictly follow the manufacturer's oil and fuel recommendations as given in the owner's manual.
- Do not use home heating oil as fuel for your diesel unless it's a dire emergency.
- Most manufacturers caution against using starting fluids in the automotive diesel engine, as it can cause severe internal engine damage.
- Do not run a diesel engine with the Water in Fuel warning light on in the dashboard. **see Section** 5 for water purging procedure.
- If removing water from the fuel tank yourself, use the same caution you would use when working around gasoline engine fuel components.
- Do not allow diesel fuel to come in contact with rubber hoses or components on the engine, as it can damage them.
TACHOMETER HOOKUP - DIESEL ENGINE
A magnetic pick-up tachometer is necessary for diesel work because of the lack of an ignition system. The tachometer probe is inserted into the hole in the timing indicator.