Aftermarket fuel filter with drain

[Finnegan1008]

My new to me truck came with an aftermarket fuel filter that has a little petcock at the bottom to drain.

should I be cracking this drain periodically to check for water? Will doing so introduce air into my fuel system? Should I crank the engine while doing so or just let gravity work

 

[5 Ton John]

My new to me truck came with an aftermarket fuel filter that has a little petcock at the bottom to drain.

should I be cracking this drain periodically to check for water? Will doing so introduce air into my fuel system? Should I crank the engine while doing so or just let gravity work

Yes you should drain it every so often and let the water out of it. If a lot of water comes out, then do it more frequently. If not then less frequently. Don't run the engine while doing this.

 

[87cr250r]

Does it have a water in fuel indicator? No need to drain unless the indicator is illuminated.

 

[Finnegan1008]

Yes you should drain it every so often and let the water out of it. If a lot of water comes out, then do it more frequently. If not then less frequently. Don't run the engine while doing this.

I won’t need to worry about air getting into the fuel system?

 

[87cr250r]

You're only draining a little bit. If any air does get in, the DB2 pump has provisions to clear it out.