Can I keep my 496HO from starting?
 

Ok, now to explain myself :D ...

Basically, I'm trying to figure out how to crank the motors without them actually starting so that the oil filters can fill up after an oil change. Ideally, it wouldn't throw any codes either. Any ideas?

I've already consider pre filling the filters, but I think this would be a real challenge on the 496 since the oil filter openings face down.

John

Pull your coil wire. I don't know about the code though. I think it would be better just to start the engine as the oil pump needs RPMS to make pressure and circulate the oil. If you are that worried put a Pre-oiler on your engines.

Flip your kill switch to off.

Just jump the solenoid. You can use a screwdriver or buy a cheap starter button from the auto parts store. I have a very good one from Snap On but for what you are doing a $10 one from Autozone will do the trick. Just hook it to the two main posts on the solenoid and push the button. Eddie

There is enough oil on the moving parts and bearings to sustain a start up without oil in the filter for 5 seconds. Just start it and don't rev it.

I changed oil last week. Also have "upside down" filter mount. Filled filters 3/4 full, oil soaks thru filter sides and seems to stay there. Flipped over for upside down install, and did not have a mess!
Also prior to taking old filters off, I punched hole in top w/ nail, which I think helped oil to drain down before take off.

There is no coil wire. Kill switch.

Kill switch. However, this is unnecessary on an oil change. just put the new filters on dry and start it up. You will get oil pressure almost immediately. I've never heard so much as a tick or knock.

Scz3ad- The 496 has a coil for each plug

I agree with Griff, having low oil pressure for 5 Seconds is not a big deal. If you ran the engine before the change you will have more oil on the surfaces than if you had not ran the engine for a few weeks without an oil change. What do you do for spring start up?

If you really insist you have a few options.

- If you have a tether engage it, engine should turn without starting.
- pinch off rubber fuel line and run engine out of fuel before oil change, then turn over with no fuel
-Disable Ignition control module (box with wires that lead to coils) This is what your tether shuts off
-unplug the crank sensor- will throw a code

There is no real difference between turning the engine over without firing it and just starting it normally when it comes to circulating the oil. The same parts are moving whether its actually firing or not, just at a slower speed. It will also have to turned over longer at the slower speed to circulate the same amount of oil.
Its also hard on the starter to crank it for very long.

Thanks for the info.

I think Griff makes a good point. Cranking it without starting it probably has the same impact as starting it and letting it run slowly (maybe even faster to get oil to the filter).

I'm gonna try the kill switches just for fun, but I'm not sure the boat is wired to crank them over without the cords in place.

BL6 - Thanks for the input. I'll try the pre-fill trick on the next change. I didn't know the filters could trap a little bit of oil like that without spilling everywhere. They're Amsoil filters.

I'm from Cali. I start the thing every month or so at the least. What's a "spring startup"? :p

John

On a 496MAG or HO just unplug the injector 10 pin plug on the harness next to the manifold, it won't start. Then you can crank a 496 till your batteries are dead or your starter motor overheats and fries (joke). You should always drain your oil after the oil has been warmed which means you've got to run the engine. The oil will be warm and well distributed and starting the motor after a filter change will not be a problem as the filter fills in about 5-10 seconds with the motor running at idle. If you're taking a boat motor out of storage after a long non-use its a good idea to prime the motor by cranking only or a preluber system before running the motor since most of the oil has drained off the critical surfaces.

Regards,
Ray @ Raylar