Fuel PSI hit zero. Bad sensor or gelled fuel?

[Youngblood24v]

Question about fuel gelling: so yesterday it was -1 all last night and I went to go start my truck at around 2pm. Got in and it started right up like normal but my fuel psi gauge was at 15psi (normally idles at 18-20) then within 10 seconds it dropped right down to 0 and the truck would smoke when high idle kicked on. The truck still ran great and sounded great like it really didn’t have 0psi of fuel pressure. After about 10 minutes of idling the fowl pressure just randomly started to go up a psi every couple seconds until I hit 20 psi and then it ran good for the rest of the day. Went to the store and put some howes in so if it did gel up it won’t happen again. Sorry for the novel but is this my fuel gelling up? Never had something gel up before so don’t know what to look for. Thanks

[Me78569]

sounds like a fuel gel issue to me.   doesn't sound like it fully gelled but enough to block the sensor from reading.