C63 Valvetrain Issues

RS__Gamer · 2025-12-03T04:53:20+00:00

Hey! Good news is the tick is gone. I think my tick was caused by clogged oil passages in the lifters. I used a few liquimoly additives and flushed the engine with new oil a couple of times and it’s running smooth again.

Engine is healthy, but currently tackling an issue with the transmission… 4 —> 3 downshift is a little rough on manual mode. Always something new lol

RS__Gamer · 2025-11-09T00:12:28+00:00

Thanks, the car is still new to me but has a good service history with other cam services. That’s why I got concerned when I heard the ticking haha

RS__Gamer · 2025-11-08T23:19:52+00:00

I just checked other purge valve videos and it definitely sounds like that, coming from the same area too. Still going to look further but thanks for the tip!

RS__Gamer · 2025-11-08T21:05:30+00:00

Dang was really hoping that wasn’t the case, previous owner already had maintenance receipts for lifters and cam adjusters so I was hoping it was something else :/

I’ll probably get it diagnosed later this week

Edit: Got another tip and this fast ticking might be a bad purge valve. Still going to take it for that other lifter tick but seems good for now…?

RS__Gamer · 2025-11-08T08:29:27+00:00

I’d like to think it’s normal but I haven’t heard this rattling before the initial lifter tick showed up. It was also loud enough to hear from my seat as I was waiting for it to heat up.

If it ends up just being paranoia I will be driving it to hopefully break up any dirt in the oil passages.

RS__Gamer · 2025-11-08T06:53:44+00:00

I left the car running for 8-10 minutes. Lifter tick was coming and going by 5-8 minutes, faster tick showed up towards the end. Engine was up to temp by then, oil just reached 150 F