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bobbobb
06-10-2007, 02:34 PM
i have a 318 diesel

and i have changed the plugs today but have now noticed when the car is all back together that the gauge on the dash as soon as i start it up goes way off the dail into i presume 0 miles to the gallon

any ideas

dont know if this is connected to other problem
Pirate_copy
06-10-2007, 02:38 PM
It stays there i take it, and doesn't come back when you let off?
bobbobb
06-10-2007, 02:46 PM
thats right doesnt come back at all i'll give it a good thrashing tommorrow and reprt back
Pirate_copy
06-10-2007, 02:49 PM
How very strange!! :confused:
Lanc3r
06-10-2007, 03:14 PM
i have a 318 diesel

and i have changed the plugs today but have now noticed when the car is all back together that the gauge on the dash as soon as i start it up goes way off the dail into i presume 0 miles to the gallon

any ideas

dont know if this is connected to other problem

The mpg gauge is vaccum gauge.

Im guessing you disconnected something on the intake manifold during your sparks change.
Pirate_copy
06-10-2007, 03:26 PM
I never knew that. You learn something every day. Thanks buddy :thumbup:

Ps, lets hope he didn't put spark plugs in his Diesel engine..... :D
Lanc3r
06-10-2007, 03:34 PM
Ps, lets hope he didn't put spark plugs in his Diesel engine..... :D

:eeps:Glow plugs Doh! :D
Pirate_copy
06-10-2007, 03:35 PM
:rofl:
johnf
06-11-2007, 01:04 AM
The mpg gauge is vaccum gauge.Why do people keep claiming that? When is the last time anyone saw a vacuum hose running to the instrument cluster of a BMW?

The gauge is electric/electronic and calculates a fuel consumption rate from the road speed ('tach'), engine speed ('td') and fuel injection time ('ti') signals. The latter two are supplied by the DDE (diesel motor electronics) which might suggest some things to check.
bobbobb
06-11-2007, 09:24 AM
cheers for that a few good pointers
Pirate_copy
06-11-2007, 10:49 AM
Why do people keep claiming that? When is the last time anyone saw a vacuum hose running to the instrument cluster of a BMW?

The gauge is electric/electronic and calculates a fuel consumption rate from the road speed ('tach'), engine speed ('td') and fuel injection time ('ti') signals. The latter two are supplied by the DDE (diesel motor electronics) which might suggest some things to check.

...interesting