2008 Timing Belt and Plug - When to replace?
11-03-2016, 07:27 PM
#1
Instructor
Thread Starter
2008 Timing Belt and Plug - When to replace?
When did you start to replace your timing belt and plugs. I've got 90k on it with a road trip coming up and I plan to put at least 40k more on it might as well do it. I was advised the plugs need to be replaced around 110K. I've already got new brakes, tires, all new fluids so once I do the belt and plugs she is good for at least 100K more. 
11-08-2016, 12:39 PM
#3
11-08-2016, 12:45 PM
#4
the stock NGK's are rated for 100k miles.
it's convenient to change them when you change the timing belt, since everything is coming off anyway.
it doesnt hurt to inspect your plugs sooner tho...
takes less than 5 mins to inspect 1 plug. and 1 plug should give you an idea on how the others are doing....so no need to pull ALL of them when just inspecting.
it's convenient to change them when you change the timing belt, since everything is coming off anyway.
it doesnt hurt to inspect your plugs sooner tho...
takes less than 5 mins to inspect 1 plug. and 1 plug should give you an idea on how the others are doing....so no need to pull ALL of them when just inspecting.
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RDX10 (11-09-2016)
11-08-2016, 02:16 PM
#5
Moderator
I never done 100K on them, My MDX had 72-73K with the stock Denso Plugs and they were wore out noticeably, The NGK IR Laser got me 1 full MPG extra and better pick up acceleration.
I dunno how long the NGK IR Lasers will perform but I highly doubt I will run them 100K. I will check them in 50K and decide if they have to be changed, they are expensive for sure but not "I need to pull 100K on them expensive".
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11-08-2016, 06:21 PM
#8
the stock NGK's are rated for 100k miles.
it's convenient to change them when you change the timing belt, since everything is coming off anyway.
it doesnt hurt to inspect your plugs sooner tho...
takes less than 5 mins to inspect 1 plug. and 1 plug should give you an idea on how the others are doing....so no need to pull ALL of them when just inspecting.
it's convenient to change them when you change the timing belt, since everything is coming off anyway.
it doesnt hurt to inspect your plugs sooner tho...
takes less than 5 mins to inspect 1 plug. and 1 plug should give you an idea on how the others are doing....so no need to pull ALL of them when just inspecting.
I never done 100K on them, My MDX had 72-73K with the stock Denso Plugs and they were wore out noticeably, The NGK IR Laser got me 1 full MPG extra and better pick up acceleration.
I dunno how long the NGK IR Lasers will perform but I highly doubt I will run them 100K. I will check them in 50K and decide if they have to be changed, they are expensive for sure but not "I need to pull 100K on them expensive".
I dunno how long the NGK IR Lasers will perform but I highly doubt I will run them 100K. I will check them in 50K and decide if they have to be changed, they are expensive for sure but not "I need to pull 100K on them expensive".
11-08-2016, 07:16 PM
#9
Moderator
The MDX is very easy to work on..
Just pull the Engine Cover with the 2 plastic flat screwdriver rotating clips get: Spark plug gapping tool, Spark plug socket, 5" Extension and Ratch and a small wrench for the Ignitor bolt which I believe is a 7-8mm and remove the #1 Cyl plug (Front of the engine, further left).
Use the gapping tool to check for wear on the plug electrode, OEM Gap spec is 1.1mm anything above that is wear and the plugs should be replaced...
The plugs we use are not meant to be gapped so do not try it!.
Just pull the Engine Cover with the 2 plastic flat screwdriver rotating clips get: Spark plug gapping tool, Spark plug socket, 5" Extension and Ratch and a small wrench for the Ignitor bolt which I believe is a 7-8mm and remove the #1 Cyl plug (Front of the engine, further left).
Use the gapping tool to check for wear on the plug electrode, OEM Gap spec is 1.1mm anything above that is wear and the plugs should be replaced...
The plugs we use are not meant to be gapped so do not try it!.
The following users liked this post:
RDX10 (11-09-2016)
11-09-2016, 01:32 AM
#10
The MDX is very easy to work on..
Just pull the Engine Cover with the 2 plastic flat screwdriver rotating clips get: Spark plug gapping tool, Spark plug socket, 5" Extension and Ratch and a small wrench for the Ignitor bolt which I believe is a 7-8mm and remove the #1 Cyl plug (Front of the engine, further left).
Use the gapping tool to check for wear on the plug electrode, OEM Gap spec is 1.1mm anything above that is wear and the plugs should be replaced...
The plugs we use are not meant to be gapped so do not try it!.
Just pull the Engine Cover with the 2 plastic flat screwdriver rotating clips get: Spark plug gapping tool, Spark plug socket, 5" Extension and Ratch and a small wrench for the Ignitor bolt which I believe is a 7-8mm and remove the #1 Cyl plug (Front of the engine, further left).
Use the gapping tool to check for wear on the plug electrode, OEM Gap spec is 1.1mm anything above that is wear and the plugs should be replaced...
The plugs we use are not meant to be gapped so do not try it!.
Will update once I find out. Thanks again.
11-09-2016, 12:28 PM
#11
Moderator
Well in their defense my MDX did run smoothly with the wore out Densos it just didn´t have the pep I would have liked for a 300HP engine..
NGK IR Lasers in and it was like a whole new car (Joking) but it did restore pick up acceleration and MPGs.
NGK IR Lasers in and it was like a whole new car (Joking) but it did restore pick up acceleration and MPGs.
11-09-2016, 01:43 PM
#13
Moderator
AFAIK Crabman.. DENSO is the main supplier for Spark Plugs for Honda and Acura so odds are that if we do the service on the Dealership we end up with Denso Plugs? I dunno if the 3rd gen came with NGK from the Factory but that would be weird? In any case NGK alternative has always been stated in the Manuals, At least in my TL and MDX they both have the correct fitting NGK Plug part number in the Manual.
In the case of differences the 2nd Gen TL was the only one to ask for Platinums (Even the NGK alternative is Laser Platinum) instead of Iridium plugs (NGK Laser Iridium).. But we end up using the Iridium Alternative anyway.
In the case of differences the 2nd Gen TL was the only one to ask for Platinums (Even the NGK alternative is Laser Platinum) instead of Iridium plugs (NGK Laser Iridium).. But we end up using the Iridium Alternative anyway.
Last edited by Skirmich; 11-09-2016 at 01:45 PM.
11-09-2016, 01:54 PM
#14
Senior Moderator
So bizarre... i thought NGK was the supplier for all J series engine's..
evidently not..
MDX (DENSO):
OEM Acura MDX 5-DOOR 2008 PLUG HOLE COIL - PLUG parts
TL (NGK):
OEM Acura TL SEDAN 2008 PLUG HOLE COIL - PLUG parts
evidently not..
MDX (DENSO):
OEM Acura MDX 5-DOOR 2008 PLUG HOLE COIL - PLUG parts
TL (NGK):
OEM Acura TL SEDAN 2008 PLUG HOLE COIL - PLUG parts
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justnspace (11-09-2016)
11-09-2016, 01:56 PM
#16
Senior Moderator
The 2nd gen TL is also NGK
OEM Acura TL SEDAN 2003 IGNITION COIL - SPARK PLUG parts
6th gen accord is for sure NGK too
OEM Acura TL SEDAN 2003 IGNITION COIL - SPARK PLUG parts
6th gen accord is for sure NGK too
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justnspace (11-09-2016)
11-09-2016, 03:29 PM
#18
Moderator
We recommend the NGK Iridium IX aftermarket plug for the 2G but stock plugs demands for Laser Platinum..
It only happened on the 2G TL as part of the "Maintenance Cost Lowering Plan" Acura had (Odd since both Laser plugs cost around the same) but ended up ditching it for the 3rd gen TL and went back to Iridium Laser.
Doing some research, DENSO Plugs were OEM to the 2G MDX until 2010 with the Facelift.. So only the 07 to 09 MDX uses DENSO as OEM Plug.
TL and RL 3.7L Engine always used the NGK Plug as OEM.
It only happened on the 2G TL as part of the "Maintenance Cost Lowering Plan" Acura had (Odd since both Laser plugs cost around the same) but ended up ditching it for the 3rd gen TL and went back to Iridium Laser.
Doing some research, DENSO Plugs were OEM to the 2G MDX until 2010 with the Facelift.. So only the 07 to 09 MDX uses DENSO as OEM Plug.
TL and RL 3.7L Engine always used the NGK Plug as OEM.
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