i30 diesel starting issue ...

[Citroënbender]

M10 is the thread major diameter. I’d go with the recommendation of the plug maker for torquing, but favouring the lighter end of the scale .

I strongly suggest nickel anti-seize (Loctite brand, at Supercrap, Repco etc) or Würth CU800 lightly applied on the thread and sealing interface.

CU800 is a trade product that everyone should have, it’s the most durable anti-seize under conditions of water exposure, solvent washout, doesn’t run with heat. If you can’t get it easily chase down the local rep and they’ll order a 100ml bottle.

[Tassie f100]

Originally Posted by xkxlxm

It took me 40 minutes this morning to remove the four glow plugs. I started at 8:08 AM and got the 4th one out by 8:48 AM.

Yesterday I reconnected everything that I had removed on Saturday, because I wanted to drive the car this morning (which I did) to warm the engine up before I tried to remove the plugs.

From 8:08 AM: I removed one nut holding a wire connector, one electrical clip, one bolt, the four nuts holding the aluminium rail and the rail itself. Then I removed the plugs. Initially there was resistance but then I could hear and feel the first bit of 'give'. I had a steel pipe ready to use on the socket handle but that wasn't necessary.

One of the removed plugs shows some pitting and another shows a bit less pitting.

I will wait until the engine has cooled to fit the new plugs. On another forum someone suggested tightening them to 8 Nm. He seemed to know what he was talking about and had possibly done the job himself. The new NGK glow plug boxes say this: M10: 15~20N.m (Probably a stupid question but what's the "M10" referring to?)

And I guess I should not put any lube on the new glow plug threads?

M10 is the thread size.Metric 10mm

[ozpacman]

Sounds like you're on the right track with it mate.

[ozpacman]

Originally Posted by Citroënbender

I strongly suggest nickel anti-seize (Loctite brand, at Supercrap, Repco etc) or Würth CU800 lightly applied on the thread and sealing interface.

+1 on the anti-seize!

[xkxlxm]

I installed the new glow plugs today, put the few other bits and pieces back together, started it a couple of times and it sounds healthy straight away, no rough-running. As Tassie f100 said, it will probably be good for another 200,000 ks ...

Thanks to everyone who offered advice.

[ozpacman]

Well done mate - and no doubt very personally satisfying to have done it yourself. They're great little cars. My '08 now has 203000 on the clock so I'm guessing this may be a job in my future.