How often should i change my plugs

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How often should i change my plugs

Postby chriscburgess » 25 Jun 2010, 08:36

1.9DG running on lpg the majority of the time apart from starting on petrol in winter. I have done around 4,000 miles since the plugs were last changed 12 months ago.

Its running fine but what i wanted to know was:
when should I change them? or do i need to clean them or just leave them?

Thanks
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Re: How often should i change my plugs

Postby Ian Hulley » 25 Jun 2010, 09:00

On my 4,000 service I fit a set of cleaned and re-gapped single electrode plugs. Saving the other set and preparing them for next time. I get a new set of 4 every other year.

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Re: How often should i change my plugs

Postby chriscburgess » 25 Jun 2010, 11:12

Cheers thanks Ian. what plugs would you recommend bearing in mind i'm running lpg.
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Re: How often should i change my plugs

Postby steve8090 » 25 Jun 2010, 13:28

Bosch (+1) WR7DC with a 0.63mm gap (25 thou)
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Re: How often should i change my plugs

Postby Ian Hulley » 25 Jun 2010, 22:51

From the 'orses mouth so to speak :wink:

Ian :ok
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Re: How often should i change my plugs

Postby ermie571 » 27 Jun 2010, 12:49

oh pooh. Just done two vans and gapped them as per haynes....

is that the same for the 2.1 on LPG 99.9% of the time. We gapped them to .7 or .8. Looks like we was wrong.

Just out of interest, what happens if the gap is too big/too small...how would it affect the running of the van?

ta

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Re: How often should i change my plugs

Postby chriscburgess » 28 Jun 2010, 08:44

Cheers Steve!
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Re: How often should i change my plugs

Postby silverbullet » 28 Jun 2010, 21:29

ermie571 wrote:
Just out of interest, what happens if the gap is too big/too small...how would it affect the running of the van?

ta

xx

You are industrious Em! From memory of my boy-racer days (it's been a while) bigger gap = higher resistance = bigger spark but only if the coil/leads/LT supply/earths will stand it. If they won't then you'll get misfires or poor economy due to unburnt fuel.
Somebody correct me if I'm wrong...
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