Recently detailed the engine bay & landed into a strange issue.
Engine was running extremely extremely rich, itna rich k exhaust sy baqaida petrol beh raha tha, it was like from water throwing engine to fuel throwing engine.
Cylinder#1 spark plug was getting wet of fuel.
Even we had raw fuel leaking out of exhaust manifold. I was worried like anything.
- Replaced injectors (alongwith seals & o rings)
- Replaced spark plugs
- Cleaned distributor
- Checked plug wires resistance (it was in spec)
- Replaced MAP sensor
But all in vain.
One of my friend told me that you might have stuck open injector#1 from the Ecu, thats why #1 plug is getting wet, which absolutely makes sense.
So I also checked the wiring of injector#1 from ecu till the injector. It was showing continuity beep only in that wire on the ecu connector as well, hence proved that its not shorted/grounded with any other wire.
I even took out the complete fuel rail assembly along with injectors & cranked the engine, in order to see if the injector duty cycle is correct or not & it was also perfectly fine.
Take a look ...
In video, it might seem like injectors are not working in perfect order, its due to camera results. I was noticing it with my naked eye & it was perfect.