Automotive Servicing NC I Practice Questions - TESDA Automotive Servicing NC I Competency Assessment Exam

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When installing a spin-on type diesel fuel filter, which procedure should the technician follow to prevent air lock and dry running of the transfer pump?

Fill the new filter with clean diesel fuel before installing it and lubricate the gasket with clean engine oil or diesel. Install the filter dry, then crank the engine for 30 seconds to prime the system. Coat the filter threads with thread locker and tighten it with a filter wrench as hard as possible. Leave the filter half-full of water to allow the water separator to function immediately.

Correct Answer:

Fill the new filter with clean diesel fuel before installing it and lubricate the gasket with clean engine oil or diesel.

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