Clubjazz - Honda Jazz & HR-V Forums

Honda Jazz Forums => Honda Jazz Mk2 2008-2015 => Topic started by: pennpeel on October 31, 2020, 08:08:48 PM

Title: replacing spark plugs 2010 jazz
Post by: pennpeel on October 31, 2020, 08:08:48 PM
my Jazz has just past 70k miles so have been doing a few jobs myself. I havn't changed a spark plug in i don't know how long.  A few question if you don't mind, do the spark plugs come with the gap already adjusted? Also watching a u-tube clip the person removes the wipers and panels to access the plugs at the back of the engine. But then only changes 4 plugs.  I've read there is 8, if so where do the other ones live? If any one can recommend any good u-tube clips or other helpful sites most appreciated .
Title: Re: replacing spark plugs 2010 jazz
Post by: madasafish on October 31, 2020, 09:08:22 PM
http://clubjazz.org/forum/index.php?topic=8028.0


8 plugs Mark1
4 plugs Mark 2 (yours).

The proper iridium plugs come gapped for the car.

Title: Re: replacing spark plugs 2010 jazz
Post by: Westy36 on November 01, 2020, 06:40:29 PM
That is a very good video. Enough info to enable the job to be done.  ;)
Title: Re: replacing spark plugs 2010 jazz
Post by: ianhj on November 05, 2020, 05:56:32 PM
Check out this post I put up a few years ago. Have now done this twice now - car is at 73,000 mies.

Its straightforward and just take your time. Yes, only 4 plugs.

https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360
Title: Re: replacing spark plugs 2010 jazz
Post by: Westy36 on November 05, 2020, 08:10:06 PM
Check out this post I put up a few years ago. Have now done this twice now - car is at 73,000 mies.

Its straightforward and just take your time. Yes, only 4 plugs.

https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360

Thanks for the link, appreciated. Ive had a brief read and look at the photos. Lots of useful infor there I will read in more detail prior to doing the job. I like to research a job before I start, that way I know what to do. Ive bookmarked the link together with a couple of others and a youtube video, a library for the job as it were.  :)

Our Jazz supposedly had its spark plugs changed recently by Honda at the recommended schedule. I am a bit sceptical of main dealers to be honest. Nearly every car Ive ever owned with a Full Dealer History has still had the original cabin filter in it, even though Ive invoices showing the previous owner has been charged for the work that the dealer has "done"  >:(  (NOT saying ALL main dealers are like this) So, Im going to change the plugs so I know 100% they've been done.

Title: Re: replacing spark plugs 2010 jazz
Post by: 123Drive! on November 05, 2020, 11:18:51 PM
Check out this post I put up a few years ago. Have now done this twice now - car is at 73,000 mies.

Its straightforward and just take your time. Yes, only 4 plugs.

https://clubjazz.org/forum/index.php?topic=8028.msg39360#msg39360

Thanks for the link, appreciated. Ive had a brief read and look at the photos. Lots of useful infor there I will read in more detail prior to doing the job. I like to research a job before I start, that way I know what to do. Ive bookmarked the link together with a couple of others and a youtube video, a library for the job as it were.  :)

Our Jazz supposedly had its spark plugs changed recently by Honda at the recommended schedule. I am a bit sceptical of main dealers to be honest. Nearly every car Ive ever owned with a Full Dealer History has still had the original cabin filter in it, even though Ive invoices showing the previous owner has been charged for the work that the dealer has "done"  >:(  (NOT saying ALL main dealers are like this) So, Im going to change the plugs so I know 100% they've been done.

Good you are being careful but the plugs on the Jazz are not cheap around £60-70 for the 4. Had them changed recently by my independent garage. He also said it's not easy to get to. As regards to Cabin Filter, they actually get very dirty easily so even after a few months, they get dirty easily. Of course I have the experience of dealer not changing the parts when the said they have.
Title: Re: replacing spark plugs 2010 jazz
Post by: Westy36 on November 08, 2020, 12:38:27 PM
Yes, the plugs are to be done soon.

I remember the old expression of 'measure twice, cut one' to avoid errors. So on that basis, I spend plenty of time researching if it's a job new to me.  8) This Forum has so much helpful information to assisit all Jazz owners.
Title: Re: replacing spark plugs 2010 jazz
Post by: cornishpasty on November 08, 2020, 07:56:26 PM
I would check the torque value on the new ones after reading of loose plugs on the Jazz. Sometimes needing a thread insert. I was lucky to buy NGK DIFR6D13 in Australia in January, for £40 for 4, from a national chain equivalent to Halfrauds. The factory manual states 18 Nm. But checked the NGK UK website, and it states 20 to 25 Nm with a DRY thread for that plug. But then, most just wang them up tight. I can't see dealers using a torque wrench either...
Title: Re: replacing spark plugs 2010 jazz
Post by: madasafish on November 09, 2020, 07:50:31 AM
https://tinyurl.com/yyxem3pn

£16.70 each
Title: Re: replacing spark plugs 2010 jazz
Post by: culzean on November 09, 2020, 09:22:16 AM
I would check the torque value on the new ones after reading of loose plugs on the Jazz. Sometimes needing a thread insert. I was lucky to buy NGK DIFR6D13 in Australia in January, for £40 for 4, from a national chain equivalent to Halfrauds. The factory manual states 18 Nm. But checked the NGK UK website, and it states 20 to 25 Nm with a DRY thread for that plug. But then, most just wang them up tight. I can't see dealers using a torque wrench either...

With copperslip or anything else on the thread reduce the torque by 30%.  With more expensive Iridium or Platinum plugs which are designed to stay in engine a long time the threads should have a special non-stick plating ( NGK call it trivalent coating ) which needs no lubrication.  I have never used a torque wrench on plugs. With a brand new plug with a crush washer that has never been compressed just hand tighten the plug without using ratchet handle and then 1/2 to 2/3 turn with ratchet handle.  If plug is being re-installed and crush washer already flattened use no more than 1/8 to 1/4 turn.  Be careful because the thickness of the plug wall below hexagon where the thread starts is very thin and easy to shear off so don't even think about overtightening a plug 'just in case'  because a sheared plug is a whole new ball game.   The plug seals on the crush washer nt really the thread, and they do not have to be as tight as you think,  there are no forces trying to unscrew a plug as there would be with a bolt.
Title: Re: replacing spark plugs 2010 jazz
Post by: Rory on November 09, 2020, 10:33:56 AM
Check out this post I put up a few years ago. Have now done this twice now - car is at 73,000 mies.


Can I ask what's prompted you to change them twice already?  Daughter's car was just serviced by a Honda specialist and I was expecting the plugs to need doing at 6yrs as that would normally equate to 75,000 miles, although the car has only actually done 60K.  He was adamant no need to change them and said they're easily good for 75K.
Title: Re: replacing spark plugs 2010 jazz
Post by: Westy36 on November 09, 2020, 10:53:45 AM
I would check the torque value on the new ones after reading of loose plugs on the Jazz. Sometimes needing a thread insert. I was lucky to buy NGK DIFR6D13 in Australia in January, for £40 for 4, from a national chain equivalent to Halfrauds. The factory manual states 18 Nm. But checked the NGK UK website, and it states 20 to 25 Nm with a DRY thread for that plug. But then, most just wang them up tight. I can't see dealers using a torque wrench either...

With copperslip or anything else on the thread reduce the torque by 30%.  With more expensive Iridium or Platinum plugs which are designed to stay in engine a long time the threads should have a special non-stick plating ( NGK call it trivalent coating ) which needs no lubrication.  I have never used a torque wrench on plugs. With a brand new plug with a crush washer that has never been compressed just hand tighten the plug without using ratchet handle and then 1/2 to 2/3 turn with ratchet handle.  If plug is being re-installed and crush washer already flattened use no more than 1/8 to 1/4 turn.  Be careful because the thickness of the plug wall below hexagon where the thread starts is very thin and easy to shear off so don't even think about overtightening a plug 'just in case'  because a sheared plug is a whole new ball game.   The plug seals on the crush washer nt really the thread, and they do not have to be as tight as you think,  there are no forces trying to unscrew a plug as there would be with a bolt.

To be honest, I was just going to use my feel on tightening. I've changed the plugs on loads of cars over the years, and (famous last words!) never had a problem. Just a firm 'nip' them up has always worked for me. 

"sheared plug is a whole new ball game."   :o indeed. A world of trouble I don't want to get involved with for sure.

With the Jazz, its access that's the problem, and knowing what to remove to get to the plugs. The video and ianhj post has some great information.

https://tinyurl.com/yyxem3pn

£16.70 each

I plan to replace with Bosch 0242236610 Double Iridium. They are a direct replacement and £11 each, so a lot cheaper.
Title: Re: replacing spark plugs 2010 jazz
Post by: madasafish on November 09, 2020, 11:06:29 AM
"I plan to replace with Bosch 0242236610 Double Iridium. They are a direct replacement and £11 each, so a lot cheaper "

I plan to do the same  but mine have 45k and appear like new - in terms of starting , running, and fuel consumption.

There is no point in unnecessary expenditure. I was educated in Aberdeen so have adopted many of the traits which made Aberdonians infamous  :P

I suspect 75k from a  set of plugs is well within reach.. that will be around 2024.. The question is: will I be too senile or physically incapable to change them , or just too lazy? :'(
Title: Re: replacing spark plugs 2010 jazz
Post by: sparky Paul on November 09, 2020, 11:37:06 AM
The question is: will I be too senile or physically incapable to change them , or just too lazy? :'(

I know the feeling... and more importantly, why does that smiley never work? :'(
Title: Re: replacing spark plugs 2010 jazz
Post by: sparky Paul on November 09, 2020, 11:51:16 AM
I plan to replace with Bosch 0242236610 Double Iridium. They are a direct replacement and £11 each, so a lot cheaper.

£35 for 4 here

https://www.ebay.co.uk/itm/4-x-Bosch-FR7DII35V-Spark-Plug-Fits-Honda-CR-Z-Jazz/184166382559

...so nearly half the price of NGK at £65 a set. Feedback on here seems pretty positive so far, the only unanswered question is over their longevity.
Title: Re: replacing spark plugs 2010 jazz
Post by: madasafish on November 09, 2020, 12:48:33 PM
Ebay says incompatible with my 2012 1.4 Jazz.
Title: Re: replacing spark plugs 2010 jazz
Post by: sparky Paul on November 09, 2020, 02:09:43 PM
Ebay says incompatible with my 2012 1.4 Jazz.

It's the same spark plug as Westy posted?

Bosch 0242236610 [ FR7DII35V ]

You can't rely on the ebay parts compatibility checker, it relies on the seller putting the correct data in.
Title: Re: replacing spark plugs 2010 jazz
Post by: sparky Paul on November 11, 2020, 09:34:39 AM
I plan to replace with Bosch 0242236610 Double Iridium. They are a direct replacement and £11 each, so a lot cheaper.

£35 for 4 here

https://www.ebay.co.uk/itm/4-x-Bosch-FR7DII35V-Spark-Plug-Fits-Honda-CR-Z-Jazz/184166382559

I put these in my watch list two days ago, and this morning I have a seller offer in my inbox for these at £31.49
Title: Re: replacing spark plugs 2010 jazz
Post by: embee on November 24, 2020, 02:12:52 PM
A word of caution, there are a lot of fake plugs on auction sites! With precious metal plugs retailing at prices like £10+ a go, there's a lot of money to be made by fraudsters.
I quite like the Denso TT double iridium plugs where suitable, I've put them in quite a few modern engines for people, never an issue yet.
FWIW, I use three suppliers for my plugs, never had any problems with any of them. I don't have any commercial connection, just a customer. They've all been around for a good few years now and you can be sure they're genuine items.
https://www.gsparkplug.com/
https://www.sparkplugs.co.uk/
https://www.opieoils.co.uk/

Title: Re: replacing spark plugs 2010 jazz
Post by: Brendan976 on December 14, 2020, 03:15:29 PM

I would research this job all winter,  when you have amassed sufficient information the summer will be here and that's the time to work on cars.lol
Title: Re: replacing spark plugs 2010 jazz
Post by: Westy36 on December 15, 2020, 10:41:31 AM

I would research this job all winter,  when you have amassed sufficient information the summer will be here and that's the time to work on cars.lol

Agreed. Nice weather always make DIY more pleasant.  :)