1990 350 Mag/Alpha I. The engine will start and run for a while, then dies. Gauges stay on. It will start again immediately. Per Don S. in another post, I ran a wire from the + battery to the + coil and it runs perfect all day long. I installed a new coil and ignition sensor, plugs & wires...
I?m trying to figure out what size fuses to use on a new ACR dual battery setup. The engine is a 1989 Mercruiser 350Mag. Does anyone know what the charging amps are for this alternator? It?s all stock as far as I can tell.
1990 Merc 350 Mag
I just replace my thermostat housing from old style to new. The original housing mounted 2 temp senders. The new housing mounts the second sender at a different angle and it hits the intake manifold. My understanding is that the 2nd sender is for a dual console boat which I...
I recently ordered transom seal kit (bellows, gimal bearing, etc.) with all Mercruiser brand parts. The gimbal bearing that came with the kit does not have a grease hole through the outer race. I called the vendor and he told me that the new bearings are perma-seal type and require no grease. I...
Has anyone here successfully repaired their gimbal ring steering pin hole?
I'm rebuilding my 20 year old Alpha Gen I. It has a lot of slop in the steering. The gimbal ring is wallowed out a good bit. The part new is +/-$500. I found a guy (JR Marine) who welds and machines them for about half...
My 1989 Merc 350 Magnum with 650 hours is on an engine stand in my garage while I replace the stringers and floor in my boat. I didn't check the compression before I took it out. Is it possible to check the compression without warming it up or would it be a waist of time?
Also, the engine ran...
So I've owned this boat for about 10 years and have completely got my monies worth of pleasure out of it. While getting it ready for the winter last fall I noticed that it had fuel leak somewhere under the floor. The wife suggested we give it to donation with a liability letter stating the...
I tried to remove my fuel pickup tube for inspection. It's in a 20 year old plastic tank. I loosened the lock nut, but the pickup won't turn. I soaked it with penetrating oil for a week and it's still tight. I don't want to damage the tank because it's no longer produced. But I'm replacing all...
I have a Merc trim system, single bolt through the bottom of the plastic reservoir, 1990 350Mag. The system had a lot of water in it (white milk). I rebuilt the cylinders, clean with new seals. Now I want to purge the pump. The pump is on the bench.
Can I fill the reservor with new oil and run...
