Daleinohio
New member
I have a pair 2004 5.7 crusader closed cooling. I let them freeze in the driveway i t got down to 20 degrees .I tried to start engines to put antifreeze in them and engines crank but wont run ,it seams like there is a lot of back pressure on them. One engine blow off the 4 in 'exhaust I now put boat in my heated garage , and the starboard engine started and I put in anti freeze , but the port wont stay running and seams like its pluged . any ideas