Re: 05 F250 Diesel idols rough sometimes won't start
Don't overuse starter fluid, the engine will get used to it, and you'll be nuked!
Just to throw some things at you: crank position sensor, throttle position sensor, idle air control valve, injector service, check fuel pressure at the RAIL, not at the pump. Diesel fuel pumps are slower than their gas counterparts. Fuel rail pressure should be rather high.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!