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justatroll · 08-04-2016, 08:51 PM

Your Timeline:
1 - "I went to start the car, it wouldn't start." (around noon?)
what did it do? did it crank and crank an crank and never 'catch' and fire up? did it crank one turn then stop abruptly? did it fire and try to start and stumble? etc.

2 - "I waited an hour and it started." (about 1PM?)
did it start right away or did you have to crank it longer than usual?
"But this time it was idling really bad, smelled like fuel, and was shaking because of the bad idling."

I believe by this time you had already bent the rod.

3 - "It also threw out a CEL code was P0203 Injector Circuit/Open (Cylinder 3)."

4 - "That night it started up perfectly fine this time." (8PM?)
" No idle issues. BUT there was a LOUD engine knocking."

the youtube video above was your very first attempt to start it after the attempt at 1PM where it started but ran like crap?

I think you have it right.
You parked the car in the morning running fine.
I believe this is when the DI injector failed open (valve stuck open) and some amount of fuel filled the cylinder

You tried to start it at noon and it woudlnt
I bet this is when the rod bent but the cylinder was still too flooded for the engine to turn over

An hour later it did start, but ran like crap
So the fuel had time to vent now that the engine turned far enough to open a valve during the rod bending event
It started but was running with a partially bent rod.

That evening you took the video and now the rod is clearly bent.

So the tech is full of shit, it is perfectly plausible.
Now how much fuel could leak into the cylinder assuming it is a credible failure mode of the valve mechanically sticking open?
Considering that when you shut off the car, the fuel pressure rail is probably above 1500 PSI, a leak could result in quite a bit of fuel.

Then if there is such a thing as an automatic "fuel pressure test" of some sort, that could dump even more fuel into the cylinder if the injector is the leak.
However the tank Fuel Pump would not get the DI fuel rail back above 1500 PSI by itself.

08-04-2016, 08:51 PM	#46
justatroll Senior Member Join Date: Dec 2015 Drives: Full race 4cyl boxer Location: CO, USA Posts: 587 Thanks: 310 Thanked 510 Times in 269 Posts Mentioned: 20 Post(s) Tagged: 1 Thread(s)	Your Timeline: 1 - "I went to start the car, it wouldn't start." (around noon?) what did it do? did it crank and crank an crank and never 'catch' and fire up? did it crank one turn then stop abruptly? did it fire and try to start and stumble? etc. 2 - "I waited an hour and it started." (about 1PM?) did it start right away or did you have to crank it longer than usual? "But this time it was idling really bad, smelled like fuel, and was shaking because of the bad idling." I believe by this time you had already bent the rod. 3 - "It also threw out a CEL code was P0203 Injector Circuit/Open (Cylinder 3)." 4 - "That night it started up perfectly fine this time." (8PM?) " No idle issues. BUT there was a LOUD engine knocking." the youtube video above was your very first attempt to start it after the attempt at 1PM where it started but ran like crap? I think you have it right. You parked the car in the morning running fine. I believe this is when the DI injector failed open (valve stuck open) and some amount of fuel filled the cylinder You tried to start it at noon and it woudlnt I bet this is when the rod bent but the cylinder was still too flooded for the engine to turn over An hour later it did start, but ran like crap So the fuel had time to vent now that the engine turned far enough to open a valve during the rod bending event It started but was running with a partially bent rod. That evening you took the video and now the rod is clearly bent. So the tech is full of shit, it is perfectly plausible. Now how much fuel could leak into the cylinder assuming it is a credible failure mode of the valve mechanically sticking open? Considering that when you shut off the car, the fuel pressure rail is probably above 1500 PSI, a leak could result in quite a bit of fuel. Then if there is such a thing as an automatic "fuel pressure test" of some sort, that could dump even more fuel into the cylinder if the injector is the leak. However the tank Fuel Pump would not get the DI fuel rail back above 1500 PSI by itself. __________________ Arguing with an engineer is like wrestling with a Pig in the mud. You are never going to win and after a couple of hours you realize that he likes it.