volvo penta web site or forum??? HELP!
I have a VP 2003 that was driving me nuts. I removed the heat exchanger, took it to a radiator shop and had it inspected and cleaned. It was fine, slapped it back on and I was still runnning hot.
So (under sail I might note) I ripped out the elbow where the salt-water return from the heat exchanger meets with the exhaust from the engine. Sure enough, clogged to the hilt. A long skinny screwdriver let me clean the two ports and I was back in business, no problems ever since. I wish I did this in the first place, because it was a LOT easier than taking the heat exchanger off. This elbow is located on the top of the engine in the very back and the exhaust hose connects to it.