Winterizing Question - Fogging Process

[TomP]

Item #13 from Don's sticky post on winterization recommends spraying fogging oil into the carb to help protect the inside of the engine. What should be done for fuel injected motors that don't have a carbuetor?

 

[180shabah]

Re: Winterizing Question - Fogging Process

DO NOT spray fogging oil through the throttle body, it will get into the map sensor.

I think you are supposed to add oil to the fuel filter and run it through the system, but please wait until the experts on this chime in.

 

[KJSmitty]

Re: Winterizing Question - Fogging Process

I by no means fall in the boat tech expert category but my Volvo tech had me do as 180^^ suggested: Removed old fuel filter and drained. I then sprayed fogging oil directly in the filter and also added a little Marvel Mystery Oil. Installed fuel filter and started engine. I then also sprayed the fogging oil down the throttle body until the engine sputtered then shut her down.

I then removed all plugs, fogged each cylinder, rotated a few turns, fogged, rotated and then installed plugs. Done.

My Volvo tech didn't mention having issue with the MAP if spraying directly into the TB? Hmmmm I'll take any expert opinions on this as well.

Cheers

 

[JustJason]

Re: Winterizing Question - Fogging Process

fill the fuel filter with 50% gas, 25% stabilizer, and 25% 2 stroke oil.
After that....
Ideally you would pull all the plugs and spray storage seal down into the cylinders... kick it over once or twice with the plugs still out, then put the plugs back in.

 

[TomP]

Re: Winterizing Question - Fogging Process

Thanks for your help. After putting the gas/stailizer/2 stoke oil mix in the fuel filter, how long should I run it to effectively coat the inside of the engine? After doing that, how necessary is it to pull the plugs and do step #2? It seems like you would do one or the other?

 

[KJSmitty]

Re: Winterizing Question - Fogging Process

Thanks for your help. After putting the gas/stailizer/2 stoke oil mix in the fuel filter, how long should I run it to effectively coat the inside of the engine? After doing that, how necessary is it to pull the plugs and do step #2? It seems like you would do one or the other?

Even though you put that concoction into the fuel filter, the volume of fuel flowing in will just dilute it thus it doesn't coat the engine as you might think. It does however definitely do good things to the fuel injectors - That is the main purpose with coating piston/rings etc. second.

Do you have to do both, maybe not - but I am the anal type that likes to ensure the cylinders, pistons and rings get a good 100% shot of fogging without any combustion or fuel burning or rinsing it off etc.. I still like squirting it down the TB as well to get a good mist on the manifold and intake valves as well (bad for the MAP if applicable - I am not sure?????).

To top it all off I had added fuel stabilizer to the tank a month ago during my last fill - this way after several weekends of boating I know the mix has made the rounds...

This has been my process the last few years/seasons.

Overkill? Probably. But I will sleep better the next 6 months....

 

[TomP]

Re: Winterizing Question - Fogging Process

Thanks guys. I should have mentioned up front that my motor is a 2007 Volvo Gi DP - 8.1 liter. Based on the comments here, it seems that I need to run the fuel mixture through the system and also pull the plugs and use fogging oil. Any other comments or recommendations I should consider?

 

[JustJason]

Re: Winterizing Question - Fogging Process

yeah... don't fill the fuel filter like a layer cake.... mix up the cocktail in a shaker and pour it in.