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Nissan Terrano II - Deseil pump - Jimbloby

Ok. Can someone tell me what would happen to the pump if no deseil is flowing

Through it. Will it sieze or melt. Im using another pump which bypasses it

However the main pump would still be hooked up

Nissan Terrano II - Deseil pump - RobJP

Most diesel pumps use the diesel going through them to lubricate them - after all, it is an oil. So if that is the case, and no diesel in there to lubricate, then it will fail sooner or later.

If the pump is working, then why are you bypassing it ?