Water is always coming from my air gap.When I bypass it the dishwasher won't drain.I am not sure how to fix this. Any suggestions?

Water is always coming from my air gap.
. In the top of an air gap is an insert with two holes. Inside the air gap are two divisions. One division connects to the inflow side of the air gap (from the dishwasher) and the other connects to the outflow side (to the disposal). If the top insert is put in wrong, water will flow from it when the dishwasher empties. For correct operation of the air gap both holes in the insert need to be positioned over the outflow division of the air gap.


In case you ever want to do away with that pesky counter top air gap and install a high loop Air gap.(see image) I'll be more then happy to help.
Note: In all the hundreds of high loop air gaps that my company's installed we have yet to get our first complaint or service call. This holds true in the high loops that we have advised installing on The Plumbing Page right here. If local codes allow, you may forgo installing an air gap and install the drainage hose with a large loop between the point where it discharges from the dishwasher and enters the sink drain. Think of a bell-shaped curve. Make sure to attach the drain hose as far up in the cabinet as you can, using hose clamps or a pipe strap to secure it, when you run it between the dishwasher and the disposal.
I've given you several options. My personal choice would be to remove the counter top air gap and replace with a high loop. The hole left by 56the missing air gap can be filled by installing a soap dispenser. Good luck, Tom

Or it could be that the hose between the air gap and the drain (or disposal) is blocked.

Harold might just have nailed it check the line from the disposal/drain for kinks or a blockage. Let us know what you find. Good luck, Tom