Just found out I definately need to replce the plugs on 300 Tdi. Quoted £ 16 each for plugs but on RCV site they give 3 types all for 300 Tdi. 2 types at ~ £5 and the Champion ones at £15 each. Am I missing something or is it simply a case of ... yer gets wot yer pays for ....
I assume the Champion plugs are miles better ???
John H
Are you sure you have to replace them all. Mostly, if there are any problems, just one has gone. Test them first and replace just the bad one(s). It is NOT said that if one has gone the others will soon follow.. Kind regards, Erik-Jan.
I only paid a tenner each for mine at "Motomania" but I think they are only £8 plus vat from LR and all four of mine had gone. It is fitted with EDS and was a bugger to start without heat.
Peter.
Yup, had them tested and instead of pulling 80 they only pulled 40 whatever so it looks like one or more are up the creek. I reckon it's probably worth doing them all at same time, just like changing the cells in a torch; leave a weak one and the others will have to carry it for a while. The cost difference shocked me though.
Well.. glow plugs are wired in series, not paralell like torch batteries, which is why you still have 2 of them working while the other 2 are dead,
Of course if the plugs are easy to get at, then change all of em.. some engines have one plug that's a pain to get at.. usually tucked behind the injection pump mounting brackets (not landrover specific here) of course that's the one that's likely to be gone :)
When you pull the old glow plugs, have a look at them as they come out of their respective holes.. any that are eaten away, or have big lumpy deposits on them indicate that cylinders injector isn't firing cleanly.
As for the differance in price.. it's the same with everything, the champion ones your paying for the brand name most likely.. but some times cheapest isnt always best.. Halfords own brand glow plugs have always been poor with my vehicles, every single vehicle i'd fitted halfords brand glow plugs to had at least one dead by the next winter...
ok they will change the dead ones for good uns when you take them back.. but it only happens again later on,
If i'm buying the plugs for my own vehicles then i go for bosch ones, but that'll be never for the next few years, as my current vehicle is direct injection.. and has a thermostarter system.. at minus 2 degrees it uses a single glow plug and injector combined to squirt hot diesel into the inlet manifold as your cranking the engine, (kinda like squirting easy start down the intake)
Never had this engine need more than 4 revolutions to fire up.. even in sub zero temps, kinda makes me never want to go back to indirect injection engines :)
It is the other way around. Glow plugs > paralell Torch Batt. > Series If a glow plug breaks down the internal resitance will become higher or infinite. This is why the others do still work. In series the whole system would break down. Kind regards, Erik-Jan.
On or around Sun, 19 Dec 2004 13:10:20 +0100, Erik-Jan Geniets enlightened us thusly:
There are some engines that are series-wired.
O.K. If so, you really have a problem if one breaks down. You could always try to short-cricuit the broken one but it will give higher power to the remaining ones. Do not know if they will last in that case. Kind regards, Erik-Jan.
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