3 sets of glow plugs in 3 months???? HELP

[wdoyle2410]

Hi all,

about 3 months ago the glow plugs went in my 1996 306 1.9TD, I'm in Australia so this was the start of winter so didn't think anything of it.
These plugs lasted about a month before failing again. So i again replaced them and all was good for about another month. Until this week they decided to fail again!
I know they're failing as both times I've pulled each plug out and tested it, it seems that both times 3/4 plugs failed. the one that didn't fail being the second from front (cambelt end) both times.
Am i just getting an unlucky batch of glow plugs or can anyone help?
I have tested the glow plug relay which stays on for 10-15 seconds then shuts off, as it should. All injectors are getting fuel.
Any ideas will be greatly appreciated.

Thanks,

Will.

[andywhy]

Have you been using cheap glow plugs? If so, get yourself Bosch Duraterm plugs and you'll probably find they'll be alright. Get your alternator tested to make sure it's not outputting too much voltage and causing them to burn out (unlikely but possible).

[wdoyle2410]

Have you been using cheap glow plugs? If so, get yourself Bosch Duraterm plugs and you'll probably find they'll be alright. Get your alternator tested to make sure it's not outputting too much voltage and causing them to burn out (unlikely but possible).

They were relatively cheap glow plugs. All that was in stock at the time, so hoping that's all it is, but didn't think the cheap ones could be this bad surely?  

Will check the alternator.

Cheers.

[Mattcheese31]

buy Beru or Bosch duraterms, should be all good then mate

[wdoyle2410]

Sounds like they're the way to go! Will get some in ASAP!