Injector Clean

[T Hergen]

Bruce,

When using the pressurized cans connected to the fuel rail, was it
recommended to block the return line?  Some
of the contraptions that connect the pressurized can of cleaner to
the fuel rail have an adjustable regulator built in.  If this
regulator is set to a lower pressure than the one on the car, fuel
shouldn't go back into the tank.  Of course, all the pressure
pulsations caused by the injectors opening and closing may cause
fuel/cleaner to sneak past the fuel rail regulator back to the tank.

Thanks,
Tom

On Thu, 17 Sep 1998, Bruce Plecan wrote:

> 
> -----Original Message-----
> From: peter paul fenske <ffnsp955 at bcit.bc.ca>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Thursday, September 17, 1998 12:10 AM
> Subject: Re: Injector Clean
> 
> 
> >Hi David
> >
> >Summit sells a Sutton on car cleaner.
> >Connect a bottle of cleaner to your test valve
> >disable the fuel pump and run the kar till bottle 
> >is empty.
> >
> >Not as good as bench cleaning, and there are
> >conflicting arguments about injector damage.
> >
> >Still much better than dumping?? in tank
> 
> Well working at dealerships we used the pressureized can
> stuff, and had at least good results.
> Working on neighbors cars, and me own the in tank stuff
> worked well.
> 
> I wouldn't take bets over if one is really better than the other.
> Pressure in the rail is potentialy faster.
> 
> One common denominator, and no I'm not gonna argue 
> about it, that the cars running premium fuel had fewer problems.
> Weither do to owners differing level of care or gas quality I 
> don't know.  There has been twice when I got the dregs form
> the gas station, and both times the treatment inna can cured
> things.   
> 
> One other thing that seems to mess things up for what seems 
> to be injector cleaning is when they change fuel brews in cold
> country, in the fall+summer, and an odd hot cold day hits.  The
> first few brews can leave ya talking to your assitants in foreign
> tongues.  
> 
> Cheers
> Bruce        I gotta be good or Doc is threating to let the details
>                   out about the recliner incident,,,,,........
> Cheers
> Bruce
> 
> >
> >:peter
> >
> >At 12:25 PM 9/17/98 +0930, you wrote:
> >>Hello all,
> >>
> >>Is there a good way to clean injectors while still fitted to the car?
> >>
> >>If not, how do you clean them on the bench without damaging it.
> >>Ie: chemical or mechanical
> >>
> >>Reg
> >>
> >>DW
> >>
> >>
> >>
> >
> >
>