Re: how often to change glow plugs?
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They are not like spark plugs. Only get juice when the PCM instructs the relay to close. As mentioned the relays fail with regularity. I replaced my relay with a Stancor contactor rated to 600 amps peak and 200 amps continuous current. No problems in over about 4 years. I was on my third OEM relay in my first cold winter.
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Should a guy pack an extra one with them then and if so how much do they run (relays)
[/ QUOTE ]Do you carry jumper cables or a large screwdriver in your truck? If so you have what you need to start in an emergency. Use the jumper cable between the two large studs on the aft most relay on the passenger side valve cover. If you are brave, you can use the screwdriver to jump the two studs but remember there are a LOT of amps going to that circuit. So it is not necessary to carry a spare GPR. Just put a good one (Stancor) in and forget about it.
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2µ Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203º T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.