With a clear inline fuel filter should it be full of gas or half full?
Summary
Whether a clear inline fuel filter should be full or half full of gas is a common question among our forum users. Some users report their filters are half full, while others see them empty and still running fine. It's generally agreed that as long as fuel is flowing through the system, it doesn't matter if the filter is completely full. One user even speculates that barometric pressure might play a role in how full the filter appears.
Here's what our forum users are saying:
- "Those filters are funny sometimes (especially when just replaced). Most of the time they should be half full, but mine has appeared empty before and ran fine." -- Jimbo, Lawnsite
- "You are okay as long as gas is flowing through." -- Scraper, Lawnsite
- "You ok as long as fuel is being sucked through the system, but you should see fuel in the filter at some point. It may take a few days to fill up and if it doesn't it can cause fuel starvation problems soon." -- LAWNGODFATHER, Lawnsite
- "My fuel filter is full on some days and empty on others, the engine runs the same in either case. I wonder if it has something to do with barometric pressure?" -- Pelican, Lawnsite
Post Mentions
- Those filters are funny sometimes (especially when just replaced). Most of the time they should be half full, but mine has appeared empty before and ran fine. I would remove the hose at the carb and make sure gas runs freely. Jimbo
- My fuel filter is full on some days and empty on others, the engine runs the same in either case. I wonder if it has something to do with barometric pressure?
- I just replaced the one on my 17 Kawi. It was half full prior to changing and then empty when I replaced with new filter. Three weeks later and there is visible gas in it. You are okay as long as gas is flowing through.
- You ok as long as fuel is being sucked through the system, but you should see fuel in the filter at some point. It may take a few days to fill up and if it doesn't it can cause fuel starvation problems soon.
- I have a Kohler 22. Should the inline fuel filter be filled with gas?? The engine runs fine, but the filter is always empty. I couldnt remember if it was always like this. Thanks
- just wondering before I cut the fuel line and put an inline filter. Maybe it will slow down the flow of gas to the carb and create problems? Or does the pressure remain the same even with the filter or it doesn't matter? apparently okay for small push mowers, just making sure. For probably...
- Inlet should flow to the outside of the filter element, allowing grit to fall away from the filter.
- Is it installed right side up? It would probably flow either way but, there is a right side up. Also, is your petcock turned all the way open?
- Maybe.... But from here I can see that you all have loose exhaust bearings. Thats the real reason!!! :eek:
- Thomas I noticed you are low on blinker fluid, while you fill that up better check the license plate fluid also.;)
Related Threads
- I have a Kohler 22. Should the inline fuel filter be filled with gas?? The engine runs fine, but the filter is always empty. I couldnt remember if it was always like this. Thanks
- edit. hold on