Replacing spark plugs

[Keekster71]

About to replace my first generation jazz with a second generation. I do all my own servicing and first generation was straightforward but I’ve just watched a video of some American changing them and he seems to have taken a lot of the car apart. I was wondering is it not easier to remove the intake manifold plenum that goes over the top? I had to do that on a Chevy spark in the past and it was straightforward. To be fair I’ve not had a proper look at it yet, but seems bonkers to take half the car apart! Or is this the actual dealership approved maintenance?

[Westy36]

I've not replaced the spark plugs on my car yet. I am trusting that the Honda dealer did the job when they invoiced the previous owner for it! Mind, I've had cars where work has been invoiced and not done.....Ford Focus pollen filters being a case in point.

This is the forum post I have bookmarked for when I will doing the job. https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360

Removing the cowl to get at the plugs is about 15 mins apparently and makes access so much easier. I would hazard a guess that it would be easier than removing intake plenum. That said though, if you do it that way and it is easy, please do post a 'how to'. 

If you've not found it already, the manual for the car is here: http://hondafitjazz.com/manual3/index.html

[culzean]

I've not replaced the spark plugs on my car yet. I am trusting that the Honda dealer did the job when they invoiced the previous owner for it! Mind, I've had cars where work has been invoiced and not done.....Ford Focus pollen filters being a case in point.

This is the forum post I have bookmarked for when I will doing the job. https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360

Removing the cowl to get at the plugs is about 15 mins apparently and makes access so much easier. I would hazard a guess that it would be easier than removing intake plenum. That said though, if you do it that way and it is easy, please do post a 'how to'. 

If you've not found it already, the manual for the car is here: http://hondafitjazz.com/manual3/index.html

Not a problem to remove the metal scuttle - no need to remove wiper motor just take bolts out and slide the metal scuttle from under it - mind out for spacers on the bolts.   You have a fair bit of access once the scuttle is out the way and can actually see what you are doing, by removing the intake you can get your arms in but would have to work by 'feel'. 

Info on spark plugs

https://clubjazz.org/forum/index.php?topic=9164.0

[Keekster71]

Thanks for the comments and links. Having had a look at a few videos it doesn’t look too bad. Snapping the clips looks like a problem so worth buying spares in advance. Also looks easier just to leave the wiper motor on the scuttle panel when you pull it out, to avoid dropping the spacers. I suspect once I’ve done it once, it will take less time the next time. At least you only have to change 4 on a second generation!

[Keekster71]

I've not replaced the spark plugs on my car yet. I am trusting that the Honda dealer did the job when they invoiced the previous owner for it! Mind, I've had cars where work has been invoiced and not done.....Ford Focus pollen filters being a case in point.

This is the forum post I have bookmarked for when I will doing the job. https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360

Removing the cowl to get at the plugs is about 15 mins apparently and makes access so much easier. I would hazard a guess that it would be easier than removing intake plenum. That said though, if you do it that way and it is easy, please do post a 'how to'. 

If you've not found it already, the manual for the car is here: http://hondafitjazz.com/manual3/index.html

I’ve had a look at that manual, not very easy to find specific instructions  fir example changing the cvt oil!

[jamesdean]

If you are blessed with small hands then I suggest that you disconnect the brake reservoir and CAREFULLY put to one side. Now easing your left hand into the tight space revealed BEHIND the top of the engine gently extract No.1 coil/plug cap (DO NOT DROP THE 2 FIXING NUTS). Lower an appropriate plug socket into the deep well, deftly followed with the correct extension and now attach the socket bar. Be certain you are rotating in the correct DIRECTION and watch your knuckles!! Original plugs may be VERY tight. Fit the new replacement with care; I use rubber pipe over the top of plug or the extension alone to get on the right thread. Tighten appropriately. Now, without refitting No.1 coil, work on No.2. and repeat for the rest [ I number the coils with Tippex ]  I have done this twice on my 177k Jazz and I found it less tedious than the usual recommendation to remove ageing panels and wiper motors.
Make sure you have all the correct tools and leave loads of time for this fiddly task.

[ssashton]

Hi I'm a new Jazz owner!

Can someone please confirm the correct spark gap for the L12B engine?

Thanks!

For future reference the the right ones are supposed to be:

NGK: IZFR6K13
DENSO: SKJ20DR-M13

Gap: 1.2−1.3 mm (0.047−0.051 in.)

[charles yates]

Hi I'm a new Jazz owner!

Can someone please confirm the correct spark gap for the L12B engine?
you can also use denso IK20 and VK20 iridium
Thanks!

For future reference the the right ones are supposed to be:

NGK: IZFR6K13
DENSO: SKJ20DR-M13

Gap: 1.2−1.3 mm (0.047−0.051 in.)