496 problem
03-27-2007 | 05:06 PM
#1
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496 problem
Hey Guys,
Anyone ever hear of the air actuator going bad. Its opening up @ 4000 rpms and flooding my bilge. its not a big problem until the boat fills up with water. I'm just not sure if its the actuator or something else causing this to happen.
Anything will be helpful.
Thanks
Anyone ever hear of the air actuator going bad. Its opening up @ 4000 rpms and flooding my bilge. its not a big problem until the boat fills up with water. I'm just not sure if its the actuator or something else causing this to happen.
Anything will be helpful.
Thanks
03-28-2007 | 08:32 AM
#2
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Joined: Jan 2003
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From: Castle Rock, Colorado
Mine occasionally opens (higher speeds) and dumps water. But not always. I thought I'd seen a post on this problem a couple of years ago and Raylar had an anwer but I can't seem to find it. I seem to recall another person talking about releasing the air pressure again after making your first run of the season?
03-28-2007 | 10:34 AM
#3
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From: Worldwide
The spring tensioner in the air actuator does go bad over time. Its a fairly simple replacement, and if you are under warranty; its a warranty item.
If you don't need or use your air pump system, just pull out the actuator an put a piece of pipe in there instead. This works in a pinch as well as a more permanent solution.
If you don't need or use your air pump system, just pull out the actuator an put a piece of pipe in there instead. This works in a pinch as well as a more permanent solution.
03-28-2007 | 11:44 AM
#5
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From: San Diego, California
Mhale00
If you have added headers or exhaust to your engine, be careful, it could be a raw water system high pressure
build-up that will open the valve when the raw water system pressure gets to high. A scan tool can tell you what the system pressure is a higher rpms and then you can check that against what the pressure Mercury lists for correct pressure range. we have seen this in a few header, new manifold system installs.
Regards,
Ray @ Raylar
If you have added headers or exhaust to your engine, be careful, it could be a raw water system high pressure
build-up that will open the valve when the raw water system pressure gets to high. A scan tool can tell you what the system pressure is a higher rpms and then you can check that against what the pressure Mercury lists for correct pressure range. we have seen this in a few header, new manifold system installs.
Regards,
Ray @ Raylar
03-29-2007 | 10:44 AM
#7
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Joined: Jan 2004
Posts: 2,777
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From: San Diego, California
Then I would suspect a weak or bad relief valve. You can take them out, remove the snap ring and clean and reassemble them. Sometimes they just get crudded up inside. If you are never going to be in winter freeze temperatures, the best thing to do is remove them entirely and substitute a coupling between the hoses that feed through them.
Regards,
Ray @ Raylar
Regards,
Ray @ Raylar
