P0303 and P0300. Loss of power and a lot of smoke and Vibration.

[WhitwellMike]

So, after having put my foot down on a dual carriageway, only up to around 65, I eased off and suddenly I lost power and could feel a lot of vibration. Later I also noticed smoke. I limped home with the engine light on. As luck would have it light went out and no codes stored (Autel hand held scanner). That said she was missing and it wasn't long before the light was back on. P0300 and P0303. Expecting to find the usual dead coil pack, I did a quick resistance check across the four of them. All measured ok. Lot of unburnt fuel could bee smelt from the back end. Decided to compression test cylinders 3, and 2. Cylinder 3 came up to compression ok, as did cylinder 2, but as I was doing 2 I noticed an incredible amount of fuel spraying from Cylinder 3 spark plug hole. I had pulled the HPFP solenoid to prevent it from starting. It turns out injector 3 is stuck wide open. Not seen this before so thought I'd share it with you guys. You can see injector 3 has cleaned itself with all that fuel going through it.

[cliffcoggin]

Congratulations on diagnosing the problem. I have never heard of an injector sticking open until now, and would not have imagined it be even possible. Does the engine run well now?

[WhitwellMike]

1 hour ago, cliffcoggin said:

Congratulations on diagnosing the problem. I have never heard of an injector sticking open until now, and would not have imagined it be even possible. Does the engine run well now?

I only got the Injectors out today. Luckily I bought a fuel injector test rig awhile ago, I have hooked it to the rail and can't even get 1 psi of pressure before the no 3 injector starts dripping. Hope to get a replacement tomorrow.

[cliffcoggin]

Ha! So much for the diagnostic codes.

[WhitwellMike]

Rail in in my test rig. Number 3 leaked at less than 1 psi. New injector fitted and car running like a dream again. Not a horrendous job to be honest.

 

[cliffcoggin]

Glad to read of it.