Comboverfish wrote:
>
> Pete C wrote:
> >The way it works is to connect to the fuel rail test port and
> >inject pressurized cleaning solvent at that point. You disable
> >the regular fuel pump and then start and idle the engine running
> >entirely on the cleaner. They recommend about 10min of idle
> >time or about 1 can of cleaner for a smaller 4 cyl or 2 cans for a
> >larger 8 cyl.
>
> And to add to that, block off the fuel return line from the fuel
> pressure regulator. Most cars currently in service return unused fuel
> to the tank; newer ones with returnless systems would not require this
> step. Rubber return hoses can be pinched shut; hard return pipes can
> be removed and capped off.
>
> Toyota MDT in MO


You shouldn't need to do that since the 3M system has it's own
regulator. You just use the 3M systems pressure gauge to measure the
normal pressure in the system and then set the 3M regulator a couple PSI
below that which should keep anything from being returned to the tank
while still operating the engine just fine since all you do is idle it.

Pete C.