986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Filling the gas tank, what can we eliminate

10/10ths · 05-31-2020, 04:19 AM

......the valve under the battery.

I tested it with air and put it under vacuum and it tested fine. But it was still bad.

I put a new one in and that is what fixed my “can’t fill the tank” problem.

Trust me. Just buy that valve, it’s not expensive, and replace it.

If that is NOT the problem (but it is) you will have eliminated a failure point and have a spare valve for the day it does fail.

But it IS that purge valve under the battery.

Let us know.

Good luck.

05-31-2020, 04:19 AM	#12
10/10ths "50 Years of 550 Spyder" Join Date: Jun 2015 Location: The Road Posts: 937	It is..... ......the valve under the battery. I tested it with air and put it under vacuum and it tested fine. But it was still bad. I put a new one in and that is what fixed my “can’t fill the tank” problem. Trust me. Just buy that valve, it’s not expensive, and replace it. If that is NOT the problem (but it is) you will have eliminated a failure point and have a spare valve for the day it does fail. But it IS that purge valve under the battery. Let us know. Good luck. __________________ 550 SE #310---"It's more fun to drive a slow car fast, than a fast car slow."