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Got this alarm: NullReferenceException Class = MTInteractiveView Method = PersistValues Can anyone interpret? I recently had two fuel pumps replaced. Not sure if it related. 2009 Merc. 8.1 Horizon 496.

My port motor is running about 900 rpms less than the starboard. Impellers and plugs have b been replaced. Top speed is only 15 mph when both motors throttled up. However, one time for about two minutes while I was returning to my slip, the port side rpm's rose to normal (I did not touch the...

Took the boat out for the first time this season. Noticed the port engine was running at a lower rpm. While trying to match the starboard motor’s power I realized I had the port throttle all the way forward and still could not get full power. The vessel view showed all metrics were equal...

Took the boat out for the first time this season. Noticed the port engine was running at a lower rpm. While trying to match the starboard motor’s power I realized I had the port throttle all the way forward and still could not get full power. The vessel view showed all metrics were equal...

I started my engines yesterday after about a three week hiatus. I noticed blue smoke for about a minute coming from the starboard motor. I’m trying to budget for several jobs I would like to take care over the winter. Is a valve seal repair considered a big/expensive job? Assuming the blue...

Are bilge heaters effective during Maryland winters? I am having issues with my genset and won't be able to get it winterized (motor won't turn over upon ignition) prior to the cold weather. I know that if the marina loses power the heater will stop working but other than that are bilge...

The genset started and ran fine at dewinterization. The next time I tried to run it and since it will not turn over after a few seconds of trying to start. The oil, gas filter and plugs where changed last November. I did not change the impeller. The error code is “OC.” Any ideas?

I ran my genset for the first time this season a month ago. It started fine and ran without issue. Last week it would not start. The engine sounds like it wants to start but the engine never gets going. It's a Kohler 5ECD with 140 hours on it. Any ideas on what could be the matter?

The water pressure at the galley faucet starts out strong and within 30 seconds gets weaker. However, the cockpit faucet pressure is much weaker than it was last season. I have a 40 PSI Jabsco pump with a SeaFlo .75L Accumulator tank. The pump is 11 years old. The accumulator is 3 years old...

I noticed a leak inside the boat at the port side skylight. What is the recommended caulk product for this job? My plan is to remove both skylights carefully, clean them as well as the entire area where they sit and set the glass back and fill in the area. Is the job more involved than that?

Can anyone give me a website or store where I can get the null stripe for a 2009 330 DA? I am trying to find the original stripe replacement.

The shower in the head has great hot and cold flow. The cold water faucet in the cockpit is fine too. However, the sink in the head barely pushes any hot water and the cold is slow. Same for the faucet in the galley. I noticed the problem last year. The screen at the fresh water pump have...

While tuning up my Kohler 5ECD part of the old anode, which was very brittle, broke off and is still in the heat exchanger. The new anode will not slide into place. I was thinking I should remove the heat exchanger and fish it out (I am not a mechanic but can do basic maintenance). Or, should...

There is a float switch out side of the shower sump box that works when turned on manually but does not come on when the water level lifts it. Is this a fix or replace situation?

I have Quick 900 foot switches on my boat. One of the covers broke off after 10 years of sun exposure. Otherwise, both switches work fine. Are the covers available separately for purchase or do I have to buy an new switch?

The shower sump box and outside bilge area was filled with water today. I immediately thought the two sumps were somehow disconnected from power or had gone bad. I engaged each pump’s switch and the water drained out. Any ideas why neither sump automatically came on as water entered as they...

My 2009 330 DA has twin 496 Mags (375hp each). I am burning 30 gph at 3200 rpm. I remember reading somewhere that at WOT the motors should burn around 30.5 gph. I had a tune up (new plugs) last August. Any suggestions on improving gas consumption?

I was out today with the cruise control set to 3250 RPM. I slowed then put the 496 motors into neutral to disabled cruise control and move through a no wake zone. The vessel view warnings started sounding for both motors. First, “limit engine” then “over temp.” But the temp was normal 173...

The hot water flow from the head sink faucet is extremely low. The head shower and galley hot water is great. I replaced the faucet in the head thinking it was the problem but the new faucet has the same issue. I’ve checked and cleaned all filter screens. I’m stumped. Does any have any...

i have a 2009 330 DA. Two of my strainers are leaking water and need to be replaced. Two questions: is this a job that must be done by a service person or can I do it myself? Second, does anyone know the model number or part numbers for these strainers? One dealer told me the units are the...