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    5.0 mpi shuts off while cruising! (((Update))) Still in need of help with fuel pressure specs and what to try next. Thank you!

    5.0 mpi shuts off while cruising! (((Update))) Still in need of help with fuel pressure specs and what to try next. Thank you! 2002 5.0 mpi alpha 1 gen 2. Been having trouble with rough idle so I thought I would take boat for a ride with some fresh gas. Cruising along around 2000 rpm and the...
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    O ring under manifold

    2002 merc 5.0 mpi. The drain under exhaust manifold is leaking and I has this posted for a while without any success. Anyone know how to change the o ring without unscrewing the whole valve? The bottom just spins and I tried to pry it apart but I am afraid to break it. Thank you. RR
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    Exhaust manifold drain

    I originally posted this under risers because that was where I started to look for my problem. I see the manifold drain under the starboard manifold that has two hoses and a ball and o ring in it is leaking. The o ring is available so the part is supposed to come apart. I took the hoses off and...
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    Exhaust risers

    Re: Exhaust risers . The picture is not clear but it is part number 863786a 1 and o ring part no. 47632. Thank you. RR
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    Iac

    2002 merc 5.0 mpi alpha 1 gen 2.Can someone tell me what an iac valve is and what it does? When I took the boat out of the water last season it kept stalling. A couple of years ago we took a ride in the ocean and every time we stopped the motor stalled. I took it to the dealer and the iac was...
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    Aftermarket part?

    Anybody hear of Mallory marine products gaskets as in exhaust manifolds? Merc number on pkg in addition to their number. Thanks. RR
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    Exhaust risers

    2002 merc 5.0 mpi. I changed exhaust using Barr parts 3 years ago. I see rust behind risers on tops of manifolds so I think the risers are leaking at high speed and want to fix it before putting boat in the water. Can anyone think of something special to look for? I have read bad things...
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    2002 merc 5.0 alpha 1 gen 2 mpi

    I have been fogging motor that I have had for 10 years for winter and last year was told that there are sensors and this should not be done. I never had a problem. They said I should take fuel line off and with a remote tank use a two stroke gas mixture that I cannot find the ratio for. Another...
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    Depth finder

    2002 sea ray depth finder stays at .05 and flashing. Couple weeks ago flashed 17 for a short time. When boat was out I looked at transducer that I sprayed with transducer paint at beginning of season and it looked fine. What do you think? The first thing that I keep forgetting to do is the...
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    Ethanol free gas

    My coworker bought a late 90' s merc i/ o that the previous owner paid an extra $2 gallon more for ethanol free gas. Any problem using regular gas. Thank you, RR
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    Engine coupler

    2002 merc 5.0 mpi 260 hp. Sea Ray. Had a new engine coupler installed less than 2 years ago and I remember the Merc. mechanic saying how important it is to line the engine up. I have less than 100 hours on the coupler and yesterday it went again. Dealer that did the work is checking it out.
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    Merc 5.0 MPI won't start

    I have a 2002 Merc I/O 5.0 MPI motor. Before I found out at the end of last season that I should not fog the motor I did as I have for the past 10 yrs. I took boat out of stoarage and it fired right up. I have used the boat a few times with no problems. Two weeks ago I filled the 50 gal. tank...
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    Grease guns

    Merc alpa 1 gen 2. I have a grease gun for cars. One for gimbal bearing. One for outdrive. One for trailer bearings. I need one to do engine coupler. Are there any of greases that will do the job for one and exceed the need for the other uses? Thank you, rr.
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    Sea Ray ski hatch drain blockage

    2002 Sea Ray 220 Sundeck that has water at times in the ski hatch after I wash the boat that does not drain. I have tried to use a fish tape and water pressure through the access hole right over the tube to clear it with no success. When the motor was out the mecanic could not see anything from...
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    warning beep

    2002 Sea Ray 5.0 260 HP MPI Alpha 1 Gen 2. Took boat out and after a while started to get 2 beeps about 1 minute apart. Everything looked fine. New water pump about 2 wks. ago. Did it for about an hour. This happened a few years ago and it was the sonsor that senses water pressure was bad and...
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    Starting or deep cycle??

    I cannot find a current post on this. I have a 2002 Sea Ray and this is not about batt. capacity. Boat is stored in water and has a bilge pump. We sometime sit a short time with radio on and motor off. I know there are many opinions but I am not sure whether to buy 2 /1000 cca amp "starter...
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    Overheat/water pump

    2002 Sea Ray 5.0 MPI Alpha 1 Gen 2----Started boat after winterizing. Overheated with hose hooked up in driveway. Water pump was new last year. Took hose off power steering cooler and hardly any flow. Backwashed from cooler out since that was a problem early last year and no dirt came out. Took...
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    Trim sensor

    2002 Sea Ray 5.0 Alpha 1 Gen 2. The wire for sensor on my drive broke off at end where it goes into the sending unit. I was told the drive has to come off to run the wire. Does anyone think it can be done without taking off the drive? I see a bolt just under the wire going through the transom...
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    Hole too big for drain plug

    2002 Sea Ray and I cannot think of the proper word but the drain plug screws into the brass (flange) ?- that has three screws holes that screws into the hull of the boat. These holes have been redrilled in a different location with bigger screws being used and now the screws do not grab onto...
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    Outdrive tilt gauge

    2002 Sea Ray 5.0 Alpha One Gen 2 MPI I had my motor pulled for an engine coupler replacement. Shortly after that when I adjusted tilt the gauge would jump all the way up or down. I checked connections in engine compartment and they seem ok. The next time I take the boat out of the water how do I...
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