new amg gas cap, rough idle plus flashing check engine light and loose gas cap messag








Pity... 🙁
I stopped by the dealer to get a new purge valve. replaced the purge valve and inspected the old one. It was very dirty on the inside of the tube, some corrosion, and what look like sand or dust. Engine a lot more responsive, power feels like before when I first got pure 900 turbos. Idle smooth asf. Ticking sound is completely gone. No more loose gas cap light.




I stopped by the dealer to get a new purge valve. replaced the purge valve and inspected the old one. It was very dirty on the inside of the tube, some corrosion, and what look like sand or dust. Engine a lot more responsive, power feels like before when I first got pure 900 turbos. Idle smooth asf. Ticking sound is completely gone. No more loose gas cap light.




The Best of Mercedes & AMG
1. Purge valve started getting loud a few thousand miles back (ticking noise on driver side for right hand drive cars)
2. Loose gas cap light randomly coming on and off
3. After a week or 2. Car would start rough, misfiring plus check engine light. that along with surging rpm on idle and drive
some other things i’ve noticed is the power. it feels like I lost 200hp from my pure 900




1. Purge valve started getting loud a few thousand miles back (ticking noise on driver side for right hand drive cars)
2. Loose gas cap light randomly coming on and off
3. After a week or 2. Car would start rough, misfiring plus check engine light. that along with surging rpm on idle and drive
some other things i’ve noticed is the power. it feels like I lost 200hp from my pure 900
I think that those were manufactured while a ago for the edition 1 and they are sitting in warehouses since then, so they are few years old and depends on the place and the climate where
they were sitting the gasket might been affected... that's just an assumption I'm making I'm not professional in any mean.
I would try and order another one from somewhere else just make sure you can return it and the next one will get probably will be good. gl !
I think that those were manufactured while a ago for the edition 1 and they are sitting in warehouses since then, so they are few years old and depends on the place and the climate where
they were sitting the gasket might been affected... that's just an assumption I'm making I'm not professional in any mean.
I also have zero issues so far with the G55 cap so far.
I’m not sure I’d necessarily agree that storing these caps in a parts warehouse is going to degrade the seal enough to cause this issue - after all, has caps are installed on cars for years. I’ve only just replaced the gasket on a 20 year old BMW cap.
Unfortunately I don’t have my stock cap to compare to the G55 AMG one - has anyone taken any measurements or even do a side by side to compare the depth of the seals etc?
I’m not sure I’d necessarily agree that storing these caps in a parts warehouse is going to degrade the seal enough to cause this issue - after all, has caps are installed on cars for years. I’ve only just replaced the gasket on a 20 year old BMW cap.
Unfortunately I don’t have my stock cap to compare to the G55 AMG one - has anyone taken any measurements or even do a side by side to compare the depth of the seals etc?
Always wondered why they look different.
Edition 55 inside with a conical nozzle
I got my caps from ECS tuning. Haven’t driven long enough or had my cars dirty/washed enough to notice a difference yet.




If you get stuck let me know i'll walk you through it 👍


