Check fuel pressure engine running and then shut off engine. If pressure drops right away then injectors or fuel lines/pump has a leak.
If injectors are suspect then injectors can be tested individually.
Watch a ScannerDanner utube for instructions.

 

pulling the injector is the best way to test it imho.
lots of vids on this subject and info on this forum search function.

it's basically a garden hose.

turn on the water with the valve off (spray seafoam through it without hooking up a 9v battery to the 2 terminals first) to see if it leaks. if not, then turn on the valve and test for leaks with the valve open. also, see if it sprays the seafoam out of it ok.

not sure how to test it on the car for leaks.

the click has nothing to do with leaking btw. the click is just the valve turning on.

if you have negative short term and/or long term fuel trim(s) at idle that approach stoich at 2500 rpm, then you could have a dripping injector.

note, don't manually turn the injector on for more than a second at a time as normal operation pulses it for millisecond duty cycles.

tony

 

Yes!! Thank you for the advice on how to diagnose a leaking fuel injector!

Both of the reply's above me are fantastic. I don't have much experience with leaking injector problems.
I'll use the advice at full disposal for my any work I do on vehicles.

Thanks!