Dr.killjoy
- Joined Apr 28, 2013
- 1,196
Are you trying to test the injector outside the motor or is the ignition system dead ??
Because those detergents do not dissolve well into octane. Those detergents eventually for varnishes (polymer films) on the injectors. The solvents needed to dissolve the varnish will also swell rubber gaskets and o-rings. The idea of using an ultrasonic cleaner while the injector is pulsing is pretty good. Actually physically cleaning the part instead of solvating the crud.Why couldn't you just leave the injector in the motor and run the motor with high octane gas which has cleaner in it or pressurized the fuel system with cleaner as teh motor is running ??
The OP sent me a PM this morning. I suggested (and he happened to have) an old automotive Bridged Class-D audio amplifier that could drive a 2 ohm speaker. Since the coil in the injector is essentially a voice-coil as in a speaker, he drove it with a 10 - 30 hz signal (available from various you-tube "sub-woofer test tone" videos). It worked. He is now converting his big mess of cables to something a bit cleaner looking.I see from this link that the injector has a moving-coil system with a spring return, so I don't think you need to reverse the pulse polarity.
by Jake Hertz
by Jake Hertz
by Robert Keim
by Duane Benson