My friend gave me a boat with a 1988 Mercruiser inboard I can't get it started. Compression is low (25, 50, 100, 50). Boat's been in dry dock for about 3yrs. I've changed the plugs, and the coil. I'm at a loss. Any suggestions?
My friend gave me a boat with a 1988 Mercruiser inboard I can't get it started. Compression is low (25, 50, 100, 50). Boat's been in dry dock for about 3yrs. I've changed the plugs, and the coil. I'm at a loss. Any suggestions?
let me ask you....is this is a GOOD compression tester? I have seen old/junky testers give faulty results. Just worth a shot to buy a nice new one, before dumping tons of money in the motor.....BTW...drain the oil and look for metal shavings. and check the filter. If it's sparkling...the pistons or bearings are shot and it's time for a rebuild...
My friend gave me a boat with a 1988 Mercruiser inboard I can't get it started. Compression is low (25, 50, 100, 50). Boat's been in dry dock for about 3yrs. I've changed the plugs, and the coil. I'm at a loss. Any suggestions?
Welcome to iboats! There could be a number of problems based on you description, first being "Boat gave to ya". Worst problem would be wore out, but if it set for a long time I would change the oil and crank it with the valve cover off. Observer the rockers / valves and make sure they are moving up and down. Ridged valve travel would be your best scenario regarding those compression numbers. You may also want to check for spark.
