^ concur. never heard of a plug that lasts that long. we should at least be able to check the damn things without it being so involved.

 

It looks like the valve adjustment will probably fall due at the same time as plug replacement, so the whole intake plenum will need to come off to adjust the valves anyway. I think that once the intake is removed there will be enough room to reach the plugs.

It's too bad that Honda had to locate the plugs on the back side of the head, but with a single overhead cam and 4 valves per cylinder and the VTEC rockers, there couldn't be a lot of room for a plug in those tiny combustion chambers. The intake valves are probably larger than the exhaust valves so there wasn't enough room to place them in front.

It's a lot worse than a Dodge Neon (the Neon had hydraulic lifters, too-no valve adjustments), but changing the rear belt on a Harley is a much harder job.

 

According to ISIS:

Remove wiper arms and cowling
Remove lower cowling
Remove coils
Remove plugs
Re-install in reverse order

b

 

Of course 2007 is a different generation of Fit but I was able to change plugs today without removing all the pastics. It is intimdiating at first site but with correct length extensions is not all that hard to do. Dealer wanted $90 to change plugs, I spent $12 at the auto parts store on Denso and it took less than an hour without a manual. Don't be intimidated, do it yourself.

 

when we replaced the plugs on my dad's '01 cruiser and compared the old to the new there wasn't much of a difference, a little carbon scoring on one but they looked great considering they were in there for 50,000 miles. We aren't going to change them again until 100,000 miles, along with the serpentine belt because half of the engine needs to come out to get at either.

 

I started having hesitation at cruising speeds (light throttle)) at about 97k miles. I took it to the dealer for diagnostics and although they found a fault error they could determine the cause. There is no fuel filter on these cars, they have a strain in the tank, so the cheapest try was changing plugs. Dealer wanted $90. Plugs were changed at 101k, doidnt look too bad but now 60 miles dim certain theere the problem. Now I'm anxious to see if it helps mpg. I've been down to about 29 driving in ATL traffic

 

I just replaced the stock plugs on my Civic Hybrid, 205,000 miles they looked amazingly good. They were iridium

 

my 2010 just clocked in 101000 miles, anyone in socal can give me a hand to replace sparklugs?

 

Valves need adjusting too.

I'm curious: did the MM go off yet?

 

sparkplugs are easy, remove the intake box and tubing, and then reach behind the throttlebody and unclip the wire plug from the block bracket thing, so the wiring is loose (plug is still plugged in, its for O2 sensor)

Grab a 10mm socket with a short extension and go at it. Be carefull, its easy to strip #4 (Behind throttlebody)

I recommend inclipping the coils one at a time, so only one sparkplug is being messed with at any single moment

 

At a little over 101K my MM gave me the code for plugs and MT fluid change. '09 Sport. The manual says 105K for the plugs, so the MM might be jumping the gun just a bit. But I'll definitely have them swapped out in the next 2K or so.

 

Did my plugs two days ago, took about an hour. Didn't have to take anything off. Honda use to make engines with the plugs facing you when you opened the hood. Single cam d series engines.

The problem is that the hot exhaust manifold use to run right next to the radiator and under the oil pan.
Switching the motor around must have lowered engine bay temps a lot

 

Modern plugs plus unleaded gas...it's been around now for a while. My 2002 Chrysler calls for a plug change at 100K. Same on my Toyota.

 

Iridium and platinum. Extremely long-lasting rare earth metals utilized. Mined out of the earth during platinum mining operations.

More specifically, the NGK IZFR6K13 spark plug (2010 Fit in my case).

LINK: NGK Laser Iridium Spark Plugs (Click Here)

.

 

Changed spark plugs in my wife's 09 fit. Very easy to do of u remove the cowl under the hood that houses the windsheild wiper motor. Made a quick run down video on YouTube

Watch "2009 Honda Fit spark plugs how to" on YouTube
https://youtu.be/tIz7bbMNmN0

 

Thanks! but the video seems to be set to private?

 

Sorry didn't notice when I posted. Should be good now!

 

So while we are on the topic of spark plugs how important do you think using dielectric grease is?

 

On Car with spark plug wires I always use it. Coil over boots are made a little different and I don't think it's completely necessary. I did not use it this time due to just moving in my house couldn't find the darn stuff

 

My 2010 is at 160,000 and it's due.....