I have a 2005 Honda 150 VTEC and the flush port seems to be clogged. When I hook a hose up to it, the pressure builds and blows the hose off the motor (the flush hose, not the garden hose). I have tried blowing compressed air, I've tried delicately to run a piece of wire in it (didn't get more than 8"or so, and I've also left it unscrewed while running it on ears and no water came out. Anybody have any other ideas? The motor was used with 90 hours on it. Runs perfect otherwise. No overheating issues. I changed the oil, water pump and gear oil when I bought it...plugs too. This is the only thing not working and it irks me to not know why. Mechanics have said it's clogged with salt and corrosion, but I don't think 120 psi air would be stopped by some salt deposits. IDEAS????