Re: Soaking a FI assembly to dissolve crud?

On Mon, 01 Dec 2003 15:41:50 GMT, [EMAIL PROTECTED] (dstvns) wrote:

>Hello,
>
>I have a small problem with my car, a suzuki import.  It's currently
>at 181k miles.  I checked the fuel pressure and it is much lower than
>normal.  Normal is 23-31 psi, and at idle it registers 17psi.   

Are you checking this with the engine running, or Key On Engine Off?
Most specifications are for KOEO.

>
>I performed the diagnostic procedures in the manual, and when I
>pinched the fuel return line, the pressure increased dramatically.
>The manual said this means it's a faulty fuel pressure regulator.  The
>filter was also replaced a few weeks ago, with no change in pressure.
>
>The regulator is a non-removable part of the entire FI housing and
>assembly, but it's fairly easy to remove the entire thing from the
>vehicle.  I have a spare FI assembly from the salvage yard, but I was
>wondering  if I could soak my original assembly in something like
>alcohol to clean out the crud.  Is there such a thing as a
>concentrated FI cleaner that I could soak the entire assembly in?
>I've already tried all the "system cleaner" fluids and they don't
>change the psi one bit.
>
>Thanks for any help,
>Dan
>
You also don't mention any type of problem that you are trying to
correct.  Are you just curious?  Year, Make and Model would help.