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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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Got two 2007 Mercury optimax 225s. When they reach 2500 rpms

Customer Question

Hi Charles. Got two 2007 Mercury optimax 225s. When they reach 2500 rpms alarm goes off and govenor kicks in. This happens for both the same way. Any ideas what's going on?
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.

Hello, this is Charles. Thank you for requesting me. I have a few questions back for you.

How many batteries are you running?

Is the alarm beeping or steady in tone?

Do you know the maintenance history?

Customer: replied 1 year ago.
2 batteries. Steady tone. Ran it a couple months ago with no issue. Ran it last night with no issue. This morning is when issue started.
Expert:  Charles replied 1 year ago.

Thanks, ***** ***** happen to have SmartCraft gauges? If so, what did the text say?

Do you also have a multimeter to do some testing, and basic hand tools?

One fuel tank in the boat?

Customer: replied 1 year ago.
No smartcraftYes multimeterHave hand tools.One fuel tank.
Customer: replied 1 year ago.
Port side actually just started working. Starboard still having issue. Did find some water in fuel but got it cleaned out.
Expert:  Charles replied 1 year ago.

Ok, the first thing that we need to verify is that there is no water inside the VST in the engines. On the left side you will see a silver container with a red castle piece on it. On the bottom of that there is a hose. Remove the hose from the rear fitting, then while holding the hose into a glass jar, open the FWD drain of the VST. DO this for both engines.

Customer: replied 1 year ago.
How do we open the forward drain
Customer: replied 1 year ago.
We were able to forward drain in starboard but nothing came out the bottom.Could not get drain open on port engine but it seems to be working fine now.
Expert:  Charles replied 1 year ago.

Can you remove the red topped filter on the stbd engine and then look inside the chamber?

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