My V6 Sonata is used primarily for city driving. I have been told
that this driving pattern can somtimes result in a deposit build-up
internally on the engine.
Recently my car overheated because of the failure of the water pump.
The water pump was replaced and now the car runs as good as ever and
the bonus is that my MPG creeped up just a bit. Can this be the
result of deposit build-ups burning off when it overheated?
I check my MPG closely by setting the trip meter to zero when I fill
up and then on the next fill-up I divide the miles driven by the
gallons needed to refill. I do this check frequently.
Remembering when with carbureted cars I sometimes sprayed a bit of
water into the intake to clean out deposits.