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Spark Plugs

PostPosted: Wed, 21 May 2008 10:45 +0000
by fabfiveferg
Hoping to give the car a bit of a service on Saturday and was wondering about Spark plugs.

Is there a better make I should look out for and what are the size/requirements for sparks for the 5

PostPosted: Wed, 21 May 2008 11:48 +0000
by fabfiveferg
Actually scratch that. by my calculations I've only done about 7000 miles on the curent plugs. So I'll have a look and unless i see any issues I'll leave them in.

The ignition leads however have not been changed AFAIK.

What sort of mileage should you look at from the leads and should I decide new ones are in order any suggestions on makes/types

PostPosted: Wed, 21 May 2008 12:45 +0000
by Ivan
fabfiveferg wrote:
The ignition leads however have not been changed AFAIK.

What sort of mileage should you look at from the leads and should I decide new ones are in order any suggestions on makes/types


I've always assumed they last the life of the car.
What leads are in it?

PostPosted: Wed, 21 May 2008 1:00 +0000
by mx5ash
They do last a long time but not sure about the life of the car, They do fail leading to misfire, poor running etc.
You are talking decent mileage though before that happens but if you don't know the age of them (i.e the car came in from japan 3 years ago with em) then they are probably due a change. They are a service item after all.

PostPosted: Wed, 21 May 2008 1:34 +0000
by fabfiveferg
Yeah they've been on since she came from Japan.

Miata.net suggest that they are changed every 45,000 miles.

As for what's on them at the moment Ivan, they look like the Grey ones

PostPosted: Wed, 21 May 2008 1:51 +0000
by Ivan
Grey ones, sure thats grand yu will get another year or two out of them.

Joking aside, i was asking to see if they where original,
that they might be on the car from new.
Mine had red aftermarket ones on when i got it.
If i where you i would leave them till you are changeing the plugs
i'd also stop smoking and shave my side burns.

PostPosted: Wed, 21 May 2008 2:42 +0000
by Steve
The '5 is particularly hard on ignition leads as the coil fires on the off stroke as well as the ignition stroke (stock leads last around 35k ish), you'll notice an improvement straight away with a set of NGK (blue) or Magnecor (red) leads.

Steve

PostPosted: Wed, 21 May 2008 3:29 +0000
by sspecdave
srigley wrote:The '5 is particularly hard on ignition leads as the coil fires on the off stroke as well as the ignition stroke (stock leads last around 35k ish), you'll notice an improvement straight away with a set of NGK (blue) or Magnecor (red) leads.

Steve


I purchased these a while back as a service item . A bit pricey but have got good reviews and come recommended

http://www.mx5parts.co.uk/product_info.php/products_id/233

PostPosted: Thu, 22 May 2008 8:51 +0000
by fabfiveferg
THis is what MX5PARTS has to say about the Magnecor leads

Although we consider these leads to be 'over the top' for all but the most highly modified cars, you asked for them, so here they are!

If I buy these I'll start worrying that the rest of the engine is letting things down. I'm afraid I'll end up with a turbo nobody asked for :shock:

PostPosted: Thu, 22 May 2008 10:07 +0000
by Ivan
fabfiveferg wrote:THis is what MX5PARTS has to say about the Magnecor leads

Although we consider these leads to be 'over the top' for all but the most highly modified cars, you asked for them, so here they are!

If I buy these I'll start worrying that the rest of the engine is letting things down. I'm afraid I'll end up with a turbo nobody asked for :shock:


Then you end up robbing old ladies hangbags just so you
can get a 1.8 Diff.
Stop the madness now! just get standard leads they will
be better than the ones in your car the last 10 or more years

PostPosted: Thu, 22 May 2008 12:00 +0000
by sspecdave
[quote="fabfiveferg"]THis is what MX5PARTS has to say about the Magnecor leads

Although we consider these leads to be 'over the top' for all but the most highly modified cars, you asked for them, so here they are!

quote]

:? This is what the say about these leads

Why Electrosport 80 leads and not the KV85? Well basically cost! The KV85's cost about £10 more than the Electrosport 80's and they are quite simply not needed on an MX-5. The advice given by Magnecor, and backed up by our own testing, is that the Electrosport 80's are the ideal lead for the MX-5

PostPosted: Thu, 22 May 2008 3:20 +0000
by fabfiveferg
Jesus Steve and Ivan. It's like good cop, bad cop with you two.

I'm going to go with Dave on this. He just seems more balanced :)

PostPosted: Thu, 22 May 2008 4:37 +0000
by Steve
no no ... I totally agree with Ivan.. if you do 3,500-ish miles a year :wink:

PostPosted: Thu, 22 May 2008 4:46 +0000
by Ivan
srigley wrote:no no ... I totally agree with Ivan.. if you do 3,500-ish miles a year :wink:


Sorry you will have to re read my post.
What i mean is that new standard leads wil be better
than the ones that have been in the car for the last 10
years or more.

PostPosted: Thu, 22 May 2008 5:59 +0000
by Steve
Heheh, I read it as :
they will be better than the ones in your car AND last 10 or more years


Doh!