johnb
New Member
- Sep 21, 2007
- 32
- Boat Info
- 220 Sundeck 2006
- Engines
- Mercruiser 5.0L MPI w/ Bravo III Drive
"Did not see this mentioned, but one does not fog multi-port EFI engines. "
I don't agree with this completely. Mercruiser is very clear in their late model engine/drive manuals. Although you don't spray fogging oil directly like w/ older carburated engines, there is a definite fogging procedure that entails feeding a gas - oil - stabilizer mixture directly into the fuel pump. You get the coating / protection while avoiding the issue mentioned regarding the injectors.
It sounds like a pain, but having just performed it myself, I can say it was quite easy in hingsight. And don't use the 6-gallon mixture the manual suggests. Scale down to a gallon or less, which is more than enough. The fuel line will suck the fogging mixture directly from a smal gas container. then just re-attach the fuel line, and you're done. :smt038
I don't agree with this completely. Mercruiser is very clear in their late model engine/drive manuals. Although you don't spray fogging oil directly like w/ older carburated engines, there is a definite fogging procedure that entails feeding a gas - oil - stabilizer mixture directly into the fuel pump. You get the coating / protection while avoiding the issue mentioned regarding the injectors.
It sounds like a pain, but having just performed it myself, I can say it was quite easy in hingsight. And don't use the 6-gallon mixture the manual suggests. Scale down to a gallon or less, which is more than enough. The fuel line will suck the fogging mixture directly from a smal gas container. then just re-attach the fuel line, and you're done. :smt038