I found this great article at GoWesty that gives troubleshooting steps.

https://gowesty.com/blogs/article-library/fuel-gauge-system-in-vanagon-how-to-troubleshoot-check-and-calibrate <https://gowesty.com/blogs/article-library/fuel-gauge-system-in-vanagon-how-to-troubleshoot-check-and-calibrate>

-Mark

> On Aug 28, 2022, at 12:17 PM, Mark McCulley <mark@markmcculley.com> wrote:
> 
> The fuel gauge on my syncro will now only show 3/4 tank when the tank is full. Does this mean the sender needs to be replaced or could there be some other problem?
> 
> -Mark
> ‘87 syncro
> 
> Sent from my iPhone