Quote:
Originally Posted by john70t
So no injector code was thrown.
Plus the entire engine shut down because of one single mechanically-stuck injector?
Those boys over in Yokohama sure won't be designing Russian tanks anytime soon!
https://scanneranswers.com/p0201-obd2-trouble-code-generic-dtc-fault/
P0200 OBD-II Trouble Code: Injector Circuit Malfunction
P0201 OBD2 Trouble Code ✔️- Time to replace an Injector
P0203 OBD2 Trouble Code - check your fuel injector and wiring!
P0292 OBD-II Trouble Code: Cylinder 11 Injector Circuit High |
The ECM has no way of knowing if the mechanical side of an injector is good or bad in start-mode (see note below). It can only monitor injector coil current. No/low current is a high-ohms issue, short/hi current is a low ohms issue.
And no............, it would not
start, because 6 of the 8 were stuck closed. See vid in post #19.
Note: I purposely left the last injector alone after bumping 7 of them. Wanted to see if it would start. It did start, but ECM threw some dash lights and DTC. Turns out while in run-mode the ECM detected cyl #6 was in mis-fire. In fact it was no fire because that injector was still stuck closed. Engine was running but only on 7 fires. I went back and bumped #6 to unstick it.
So, the ECM can detect something related to mis-fire (which could be no fuel, or bad spark, etc), but only does that when engine is running. Many of the ECM monitors are engine running monitors, and some of them are the 2-trip type.
It's not ez to diagnose some things when the engine is stuck in a small area ("state", in this case a no-start state) and the ECM does not have much self-diagnostics in that state.