Any guesses why it left me stranded?

Spooler · 01-21-2021, 06:12 PM

Our engines dropping valves is not normal at all. If you did have piston to valve contact it may be due to the galley gasket leaking oil. It supplies oil to the VTC's on the cams. Normally that won't cause any piston to valve issues unless the timing chain jumped or broke. That diagnoses is lacking lots of information. Something else was missed.

BrianInSoCal · 01-21-2021, 06:21 PM

Thanks Spooler. So maybe the timing chain broke causing the valves to go nuts. I guess then the question is why would a timing chain fail at that mileage on the VQ37? I've not heard of that happening on our engine.

The shop didn't do a full diagnosis - I would have had to pay for a bunch more labor. He just did some of his own (without charging me) based on his curiosity.

01-21-2021, 06:12 PM	#1 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,176 Drives: 2013 Nismo 370z Rep Power: 2684395	Our engines dropping valves is not normal at all. If you did have piston to valve contact it may be due to the galley gasket leaking oil. It supplies oil to the VTC's on the cams. Normally that won't cause any piston to valve issues unless the timing chain jumped or broke. That diagnoses is lacking lots of information. Something else was missed. BrianInSoCal likes this.

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01-21-2021, 06:21 PM	#2 (permalink)
BrianInSoCal Base Member Join Date: Jan 2014 Location: San Diego Posts: 30 Drives: 2014 370z Rep Power: 13	Thanks Spooler. So maybe the timing chain broke causing the valves to go nuts. I guess then the question is why would a timing chain fail at that mileage on the VQ37? I've not heard of that happening on our engine. The shop didn't do a full diagnosis - I would have had to pay for a bunch more labor. He just did some of his own (without charging me) based on his curiosity.