fogging raptor motor

[mcjimmy33]

First winter with my craz and first time with a catalytic converter marine engine. I am used to fogging the motor by spraying down into the throttle body, which I understand is a no no on the catalytic converter engines. So I have read to pull each plug, spray fogging oil, and bump the motor to move the oil around. Couple questions. I understand the raptor engines have 16 plugs. Do I need to remove all 16 or just one per cylinder? Also can I remove all 8 or 16 and then bump the motor or do I have to do individually by cylinder? Do I bump the motor with the plug out or back in? If out, do I need put a town or something blocking the open hole or will oil blow out there? I am assuming you guys all bump the motor with the safety lanyard pulled so that it wont start?

[Darter]

Without getting into specifics about your motor, pull the lanyard (or distributor coil wire, for those that have one and no lanyard) first. I like to spray, bump, spray into each cylinder. That just gets a little more coating of the oil in the cylinder (not 100% guarantee, just better). I always have towels on hand when working with any fluids around the boat, just good practice. But you probably won't get more than a drip coming out.

[MJHSupra]

Bumping the motor w/o a plug will cause some oil to shoot out of each cylinder.

You can fog all at once.

There are different options about fogging with or without spark plugs and running a chance to foul a plug. I bump mine w/o the plugs to avoid it.

Yes on the lanyard.

Are you referring to the Indmar site when they talk about the Raptor motors:
DUAL SPARK PLUGS
Time proven, aviation grade dual spark plugs provide more power per liter and redundancy in emissions systems and more efficient combustion leading to increased fuel economy, reliability and cleaner emissions. Dual Spark plugs also extends the spark plug service life to 300 hours.

[mmandley]

Why are you fogging at all

You realize when you start the engine next season you will burn that through the cats.

I've never fogged my boats and they have sat 9 months in Oregon before.

I've never fogged my Vette when it's in storage.

Get away from the old mentality of fogging.

You don't need to jeopardize anything in your engine.

Honestly it's safer to just go start it for 30 seconds once a month

You won't hurt the impeller and you won't overheat the engine.


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[lsvboombox]

From indmar,

"Indmar does not recommend applying fogging oil while
the engine is running. The fogging oil could damage the
catalytic converter. The cylinders must be protected by
removing the spark plugs and applying the fogging oil
directly into the cylinders.
3. After all the cylinders have been treated, crank the
engine to spread the lubricant on the cylinder walls.
Replace the spark plugs in the engine.
4. Perform annual maintenance; refer to Section 6,
Scheduled Maintenance Chart."

[mcjimmy33]

Indmar recommends doing it. Going to go with their word over yours...

Why are you fogging at all

You realize when you start the engine next season you will burn that through the cats.

I've never fogged my boats and they have sat 9 months in Oregon before.

I've never fogged my Vette when it's in storage.

Get away from the old mentality of fogging.

You don't need to jeopardize anything in your engine.

Honestly it's safer to just go start it for 30 seconds once a month

You won't hurt the impeller and you won't overheat the engine.


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[mcjimmy33]

Yes I saw the comment about dual plugs in my manual. So is it still just 8 plugs?

Bumping the motor w/o a plug will cause some oil to shoot out of each cylinder.

You can fog all at once.

There are different options about fogging with or without spark plugs and running a chance to foul a plug. I bump mine w/o the plugs to avoid it.

Yes on the lanyard.

Are you referring to the Indmar site when they talk about the Raptor motors:
DUAL SPARK PLUGS
Time proven, aviation grade dual spark plugs provide more power per liter and redundancy in emissions systems and more efficient combustion leading to increased fuel economy, reliability and cleaner emissions. Dual Spark plugs also extends the spark plug service life to 300 hours.

[mmandley]

Indmar recommends doing it. Going to go with their word over yours...

And that's fine just saying it's really not needed, divas you wish I was just giving you my experience with engines for 30+ years.




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[flienlow]

Yes I saw the comment about dual plugs in my manual. So is it still just 8 plugs?

My Raptor 400 is 8 plugs. I shut the engine off, pull one plug at a time, and give her a good Juicing with fogging oil, Reinstall, and then go to the next one. Beginning of Season she lit off in 1/2 revolution no smoke or issues.

[sivs1]

Does it even get cold enough in GA to winterize? I don't fog, never have and will reach -30. My dads family used to own a marina and they did not fog either. Maybe we're old school and the newer engines need more love during the winter months?