How to winterize closed cooling system engine - iboats Boating Forums
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 verify the …
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) injector vs. a …
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 problems you list. …
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...
How to check ECM | Boating Forum - iboats Boating Forums
Sep 1, 2014 · My engine is a 1997 Mercruiser 5.7EFI with a replaced engine by Mercruiser put in 2007. It is a solid beep when it goes on. The service guys is checking the whole system and so far is …
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 give a …
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
555 ECM faults | Boating Forum - iboats Boating Forums
Jun 6, 2009 · Re: 555 ECM faults Do you have Mercruiser Manual #36, ECM 555 Diagnostics? I didn't see it under the Adults Only sticky, but I downloaded it from somewhere. If you have it, follow the …
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 pump …