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Passat - Glow plugs and leak? - wonderwheels
Is there a service interval for glow plugs or are they only changed when there is a problem?. My car is at 57K miles and occasionally seems to run a bit rough shortly after starting.Also I have notice that there is water dripping from the boot catch when the boot is open.Should I be concerned at this?Where would this water be coming from?
Passat - Glow plugs and leak? - dieselnut
Glow plugs arn't part of routine service.
Disconnect the wire to each glow plug & test with an ohm meter - they should show about 1 ohm which on most meters will show as a short circuit. If any show an infinite reading ie. oposite to short circuit, then change it.
This isn't a defining method, as other things can go wrong with glow plugs that don't show with an electrical test, but it shows 99% of problems.
The water from the boot lid may be condensation at this time of year. Warm moist air from the cars interior condenses on the cold boot lid surface.