fuel injector cleaning

[Al Ramone]

my datsun is poorly

i've sucked up a load of rust from the petrol tank and it's now running very lean.

it's a 70's injection petrol tank, with a external bosch high pressure pump then onto a standard injection fuel filter.
a nissan ca18det 200sx engine running stock ecu fuel reg etc, returning back to the fuel tank.

i ran the fuel level quite low and started running very rough.
i've disconcected the fuel pump and loads of little rusty bits came out. emptied the fuel at the fuel tank out hose and replaced the fuel filter (which was full of brown petrol) but still running lean.

whats the best way to clean out the rest of the system? injectors etc. any good products i can run through the fuel lines or do i strip it all down and blow compressed air down everything?

i know the cars running lean as i've got a wide band afr telling me.

taa

[ruishy1]

soak the injectors in carb cleaner overnight, and while they are submerged, connect them up to a pulsed 12v power supply.
Unless you have access to an ultrasonic cleaning tank ( which i do

[Al Ramone]

cheers
was hoping for an easy on car fix due to the location of the injectors. maybe i can fill the fuel line/filter with carb cleaner and spin it over to see if that clears it before i strip em all down.

[ruishy1]

yoiu can try the injector cleaner stuff, it does work a little, but if they are that badly clogged they really need removed

[akku]

Ultrasonic is the best option.

[DavidB]

I did this with Starion injectors, which are prone to the same thing.

There is a great page on flushing, etc here:

starquest.i-x.net/viewtopic.php?t=902

Connecting the two pins to live opens the injector permanently, you can then attach a pipe to the top and fill with carb cleaner. Don't use petrol with 12v.