check that valves are fully open
Absolutely. Every built-in dishwasher can heat water to a higher temperature than what dispenses from your kitchen sink.
Dishwasher line is hot water. Tie ice maker into 1/2 inch cold line going to kitchen sink.
turn up the water pressure
It provides it's own pressure. It has it's own pump which is used to create the needed pressure to wash the dishes.
Where do you not have pressure? At the sink? Probably some rust came loose and is blocking the screen in the end of the spout.
2-3 usually. 1 each for hot and cold water and possibly a third for hot water going to dishwasher.
Possibly unscrew your aerator at the end of the spout and see if the screen is clogged. Blow it out and rescrew the aerator on. If that isn't the problem, sometimes things get caught in the spout. Unscrew the spout and turn the water on. If there is water coming from there and not out the spout when it is hooked up, the spout is plugged. If no water coming out when the spout is off, rehook spout and change cartridges or stems in the faucet AFTER shutting the water off. Depends on the brand of faucet, check the instructions for the brand and model. Also your kitchen dishwasher and sinks are run on seperate valves. The dishwasher valve is usually under the sinks (causing the water to go to the dishwasher first) the valve that was installed for the sink (before the dishwasher) may be bad too.
ummm.... you wash them in a sink? yes and a dishwasher
you can improve water pressure by installing a booster pump or if on a well then turn up your set pressure. If you had good pressure before and now are having poor pressure then it could be many reasons.
When the electrician finishes his work by installing light fixtures, trimming out the breaker panel, installing electrical outlets and switches, cover plates, and connecting appliances like the water heater, garbage disposal, and dishwasher.
It needs at least 38 psi of incoming water.
With the water main shut of valve of course