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Don't alter the gaskets. They work perfectly well, and are designed to become thinner with proper torque applied to the screws.

Completely disassemble the poppet, spring, diaphragm and washer. ...

Check the battery voltage with the engine running at idle. It's very likely that it's not charging.

Next step is to check the voltage at the large RED output terminal on the alternator with...

You would need to make direct contact with a service facility for that info as it varies.

Read here: www.integrityinjection.net/injectorservice.html

+1

See Rhonda's post, pinned at the top of the Forum. She can assist you with all of your Parts/Accessories needs.

+1

There is a post in the FAQ Section that covers the removal and replacement of the fuel rails. You're not disassembling anything because all hoses (EVERY ONE) should remain on them.

Be sure...

Additionally, Mercury issued a Service Bulletin about using ANY type of device that is a wedge, spacer or bracket on the engine mounting hardware. NOTHING between the engine and it's mounting...

+1... most of us dealers keep those in stock. See Rhonda's post, pinned at the top of the Forum.

^^^ This, or adapter plate gasket, OR A STICKY POPPET VALVE (if they don't slide in and out like they're buttered, they WILL HANG open when engine is hot).

ANY Authorized Mercury Dealer can take care of this for you.

Pretty much any system built after 1/1/11 will have one.

On the B1-15 (Gray) line, make certain that you put each end into piping-hot (near boiling) water for 20 seconds or so, shake off the...

Ask him if his spark plugs are more than 364 days old.

Moving your post to the 4-stroke Forum for you. Please update with engine serial number for further assistance.

Thanks!

Temps sound normal.

For TESTING ONLY: Disconnect the connector from the ENGINE oil tank sensor. Jumper across the two wires on the HARNESS side: the horn should no longer sound if it's the...

Maintenance History? What fuel (and how old)?

The "Trophy" is the problem here more than any pitch question. Simply put- you can't purge the can and remove the water that's blocking the exhaust.

Try a 24 pitch Tempest Plus or POSSIBLY a 24P...

+1 to #4 and #5.

Have also seen poor grounds on the electrical plate (where it bolts to block, or where grounds connect to it) causing this type of problem.

You cannot test an FDV by "blowing through it". It's a DEMAND valve, so the way you test it is to place a DEMAND on the outlet side (providing low pressure or suction).

You stated the line was...

Please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks! :beers:

Run it FULL DOWN (verify clearance, may have to do on the water) and hold the trim DOWN for 4 seconds (stalling the trim motor DOWN). This will ADAPT the full down position.

If TRAILER LIMIT is...

Make sure it's going to handle 125a input just to be safe (you might also look at an alternator upgrade at some point, and need that extra capacity).

Vessel View LINK will not work with your phone. That would be Vessel View MOBILE.

Confirm which unit... because LINK is what works with your Lowrance units and NMEA-2000.

That 14 pin connector "can" be de-pinned, but it's a real PIA to do it.

That's MEGA hot for this engine. Don't continue running it.

I would be going back into the water pump FIRST before going any further. Failed or incorrect gasket or gasket orientation, or...

As indicated above, YOU are inducing faults and engine guardian. Never apply throttle unless your engine is IN THE WATER, IN GEAR, and GOING SOMEWHERE.

Very BAD idea.

I'm not buying "crankshaft sealing rings". Something (simple) is being overlooked.

Remove pressure hose from crankcase, use gearcase pressure tester (or bicycle pump) to...