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Re: 4kq Moaning and groaning
> My 86 4kq 'moans' when starting lately. I believe it has something to do
> with the vacuum reservoir in the fenderwell (I presume there's one in
> there...) as it goes away once the engine has revved a few times. I did have
> to take out the vacuum assist piston rod as it was clacking something
> horrible. I hope this isn't the cause.
different systems though. the pump is for the brake servo only. the
reservoir is drawn by mfld vacuum, and runs the fresh/recirc flap - and
maybe your diff locks too? Not sure if they have their own reservoir or
Still an interesting theory for cold engine funny noises...
> Also, the diff's don't seem to lock/unlock with the knob. I have to roll the
> car back and forth a few times to disengage. Ideas?
I think you have to roll the car a bit, that is normal and proper.
82 Audi Coupe; 84 4kq; 85 Coupe GT; 73 F250