How to winterize closed cooling system engine - iboats Boating …
Oct 2, 2012 · Hello, I would like to winterize 7.4 L Mercruiser engine (1997 Mercruiser 7.4 L 8 cylinder) with closed cooling system. By reading various threads on the forum, I would like to …
Merc 7.4L (454) MPI Fuel Pressure - iboats Boating Forums
Feb 6, 2008 · Anyone know what the factory fuel pressure setting is on a 2001 Mercruiser 7.4L MPI at the fuel rail Schrader valve? I'm trying to diagnose a possible faulty (or clogged) …
what is a mercruiser 188 - iboats Boating Forums
Sep 26, 2013 · Re: what is a mercruiser 188 ^^^ Sir, you are confused. You're thinking of the mercruiser 470, 170, 180 series engines, the big 3.7 liter 4-cylinder. It does have all the …
Mercury MerCruiser Sterndrives & Engines - iboats Boating Forums
Aug 7, 2009 · Mercury MerCruiser Sterndrives & Engines Sponsored by Quicksilver Propellers 1 2 3 … 4746 Next
Mercruiser trim/tilt wiring - iboats Boating Forums
Aug 22, 2010 · Re: Mercruiser trim/tilt wiring For the trim limit switch, look for connectors with a purple/white wire and two blue/white wires. Polarity is not important. Adjust the TL switch to …
New 5.7 distributor installation - iboats Boating Forums
Sep 20, 2012 · Let me start by saying I purchased an 86 boat with a 5.7 mercruiser that was not running. After going over it there was no spark. I tested the old Thunderbolt ignition system …
Mercury Fault Code 312 - iboats Boating Forums
Apr 29, 2020 · Hello, Pulled Mercury fault Code 312 this my Rinda after the alarm went off. Mercruiser 5.0 mpi with Catalyst (puke). Boat runs flawless and oxygen sensor was replaced 2 …
Oil leaking our of "weep hole" in Alpha 1 lower unit.
Jun 14, 2017 · I replaced the water pump assembly in the lower unit of my MerCruiser Alpha 1 sterndrive. The boat was running too warm so I decided to investigate and found the water …
Mercruiser 470 Engine Spec and Mods - iboats Boating Forums
Oct 2, 2006 · Re: Mercruiser 470 Engine Spec and Mods Most 470 owners are just happy if it keeps running It is a real bad pick for a HP motor Tommays
Replacing Exhaust Manifold and Riser on 3.0L - Tips Needed
Aug 19, 2016 · The time has come to do some preventative maintenance and i'm planning on changing out the Exhaust Manifold and Riser on my 3.0L Mercruiser. The engine is a...