hi, ive been reading a lot about the trim codes. i have a volvo d12d i changed all injectors but mwchanics told me they did not need to be programmed. i used to avg about 7.4mpg now with all injectors new i barely get 6ish.. can this be the problem? is it worth it to open the engine to get all the trim codes from the injectors?
Volvo D12D compression and balancing test
Discussion in 'Volvo Forum' started by bravoo67, May 4, 2012.
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