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 …

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 …

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. …

Aug 7, 2009 · Mercury MerCruiser Sterndrives & Engines Sponsored by Quicksilver Propellers 1 2 3 … 4747 Next

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 …

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...

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

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 and after …

Jun 27, 2017 · I have a 2004 4.3L mercruiser and from my understanding, if I turn the key to the ON "Running" position, the fuel pump should not prime, it should only prime when the engine is cranking …

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 …