Fuel that has been sitting is a real fault
Plenty of vehicles around here work hard for part of the year and then stand. A second truck, a seasonal vehicle, something that comes out when the work does.
Gasoline does not keep indefinitely. Over months it oxidizes and the lighter components evaporate, which leaves fuel that is harder to ignite and can leave deposits behind it. A vehicle that ran perfectly when it was parked in the fall can crank and crank in the spring, start roughly, run unevenly, and stall at idle.
The owner usually concludes the engine developed a fault while it sat, which is understandable and often wrong. The engine is fine. It is being asked to run on something that is no longer really fuel.
What to say when you book
If a vehicle has been standing, lead with that. How long, roughly how full the tank was, and whether it is gasoline or diesel.
It changes the diagnosis completely. A running problem on a vehicle used daily points one direction; the same symptom on a vehicle that has sat since last season points at fuel, at a fuel filter, and at what may have grown or settled in the tank.
Stopping it happening
For a vehicle you know will stand: store it with the tank full rather than nearly empty, which leaves less air space for condensation, and run it occasionally rather than letting it sit untouched for the whole off-season.
Neither is a guarantee and both help.
Diagnosis before parts
The national engine repair page covers what a warning light does and does not tell you, and when a symptom means stop driving rather than drive in.
Heavy truck engine work is not offered. The commercial side here is tires, alignment, OTR services, roadside assistance, mining fleet services and fleet accounts.
About this store
The Jonesboro store runs seventeen services and is managed by Tony Kuehnel.
See the national engine repair page for all 33 locations.