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Old 08-14-2019, 12:39 AM
cropduster cropduster is offline
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Join Date: Jul 2015
Posts: 20
99 E300d hard cold stsrt

Have a new to me 99 that runs great, but itís a real hard starter. New glow plugs, relay is fine, o rings were replaced on plastic lines. Injectors rebuilt, new filter. The prevailing theory is either air in the lines, which I canít see, or a weak lift pump. My idea was to place an electric helper pump around 5 psi on the supply line just as it enters the engine compartment. Would this help me out?
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