Some background-<br />I bought a 1975 Cobalt 18' tri-hull, 233 Mercruiser(I/O), this past September. Everything appeared to be in great shape on the surface. I purchased it from a couple that had owned it all but the first year (they bought it from a friend). I paid $3,800 for it and the EZ...
I purchased my '75 Cobalt Tri-Hull (351 Windsor, pre-alpha outdrive)last September. I've put about 25 hours on her, making a total of less than 450 hours on the engine. The boat is in great condition considering her age.<br /><br />I am storing my boat at an indoor facility for the winter. I...
I am looking to buy plugs for a tune-up in the Spring. I have a 1975 Cobalt Tri-hull(18') with the Mercruiser 233 (Ford 351) engine. When I go to websites to look for plugs, I get two options. They are 14mm and 18mm Hds. Any idea on what that means? My boat is in storage for the winter, so...
I have a 1975 Ford Windsor 233 (351) engine. I'm looking to upgrade it with an electronic ignition. The cap says that it is Mercury Marine and has screws to tighten it down. I don't see anything on the distributor itself that would identify whether it is a Mercury Marine or Prestolite...
I just bought a '75 Cobalt with a Ford 351 about a month ago. I'm on my second tank of gas and it is running REAL rough, with smoke (gas smell) coming out of the exhaust until it warms up.<br /><br />I just read on top of the engine that you need to run at least 88 octane (I put midgrade in it...
I recently bought a 1975 Cobalt 18' Tri-hull. It has the Mercruiser 233 (Ford Windsor 351). I had to have my Cut-off Switch adjusted to switch in and out of gear.<br /><br />I'm looking to replace the switch myself, but I have called 10 different places that Mercury recommended and none of...
My new (1975 Cobalt Tri-hull) has a knob underneath the steering column. The owner's manual is pretty much worthless. Anyone know what it is for? Thanks!
I just bought a 1975 18' Cobalt with a Mercury 233 (Chevy 350). I launched it yesterday and when I got in the water the boat stuck in gear (both forward and reverse). My control is one with a black pushbutton in the middle.The only way I could get it out of gear was to turn off the ignition, put...
I just bought a 1975 18' Cobalt with a Mercury 233 (Chevy 350). I launched it yesterday and when I got in the water the boat stuck in gear (both forward and reverse). The only way I could get it out of gear was to turn off the ignition, put it in neutral, re-start the engine, and put it back...
