Glow Plugs

I had never had fail one glowplug yet. They were all replaced with new ones when I bought the troopie second hand (it had 5 bad ones!) and they still worked perfectly 12 years later, when I upgraded to a bigger engine.
Klaus

I had never had fail one glowplug yet. They were all replaced with new ones when I bought the troopie second hand (it had 5 bad ones!) and they still worked perfectly 12 years later, when I upgraded to a bigger engine.
Klaus

I ran my GQ for 12 yrs without a glow plug fail
(or nearly anything, for that matter).
Gerry

might be good practice but considering glow plugs arnt esential to start your vehicle (just make it easier) and you will know when they need changing coz your vehicle gets harder to start I personally wouldnt worry until you know they need doing, its not like a stuffed glowplug will leave you stranded

steveA
toyota hilux 89 2.8ltre not only does engine get hard to start but can cause the wiring system to burn out back to the relay which happend to my sons hilux so I would consider replacing glow plugs every 2yrs. Hate to get up one morning in the bush and go to start vehicle and smoke pooring out from bonnet horrible sight.

cluffy

I replace mine regularly...
every time I change my vehicle.
We have three diesels in the family, one 24 years old (isuzu), one 14 (nissan) and one four.(nissan)
ALL are on original glowplugs!
If you want to throw away money, then go for it.
Think of it like this... They're unlikely to all fail at once, and I guarantee you you'll be able to start a 6 cyl motor with five working glow plugs- except maybe in the Antarctic.........
Save your money IMHO.
Cheers

did 450000 in my lux using the replace as needed method. When they get lazy you will know you may get all or some of hard starting, white smoke on start, a miss in engine on cold start for a 5-10 seconds. Either way a auto elec can test them and so can you if you get someone to show you. It's simply a matter of isolating the plugs by removing the bar that connects them and using a multimeter to check the resistance of each one. once you bin shown it's easy and multimeters are only a couple a bucks.

Thanks for everybodies input, I don't think I'll be changing my glow plugs just yet!!