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Old 2007-03-18, 08:35 PM   #1
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Default How to change the spark plugs in a 2002 mazda mpv

this is what i did. I am not responsable for you screwing up your car. This is just a guide on how I did mine.

Here is a how to for those that are worried about changing the plugs. The dealer and shops make it sound like a big deal ("oh the whole intake maniifod has to come off and that take 4 hrs to do"). bullsh**. Took me 2 hrs and i had no manual to guide me. I will try to explain the best i can but i warn ppl right now, I'm inclined physically not mentally. Meaning i can do this and show how to do it but i cant put words together explaining how i did this or that very well. So please bear with me.
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Old 2007-03-18, 08:35 PM   #2
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So heres the colprit. 2002 mazda mpv. 3.0l v6.

Step 1: Take the cover off. There are 3 8mm bolts holding it on.


This is what it looks like with it off.
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Old 2007-03-18, 08:36 PM   #3
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Next disconnect the 2 cables from the throttle body.
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Old 2007-03-18, 08:36 PM   #4
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Next take unbolt the cable harness from the intake manni. Red arrows indicate where the 3 10mm bolts go
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Old 2007-03-18, 08:37 PM   #5
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Next unplug this. This is on the pass side of the intake manni.



Also just below this connector there is 3 more connectors that need to be undone from a braket. You'll know what i mean when you look down there.
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Old 2007-03-18, 08:37 PM   #6
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Next remove the (maybe im wrong on what this is)pcv valve thats on the top side of the intake manni
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Old 2007-03-18, 08:38 PM   #7
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These connectors were located in the front of the intake tube from the throttle body to the mafs. I slid them out and moved them to the side



This was also unpluged from the intake tube


Unplug this, its above the intake tube. The red arrow is the last thing i showed to removed.


Here is another connector that needs to be unpluged. The red arrow indicates the throttle body.
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Old 2007-03-18, 08:38 PM   #8
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Now that all that is out of the way you can take the 6 8mm bolts that hold the intake manni out.


This is the red arrow on the right side of the screen


And this is the one on the left
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Old 2007-03-18, 08:39 PM   #9
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Theres 2 12mm bolts holding this onto the intake manni. It sits next to the brake booster. Trust me when i say just remove the bolts. Be very careful when removing the bolts because there is a metal gasket that goes in between. Also where you see my 8mm socket is where you will find another bracket bolt that holds down the intake manni. On the last pic you can see where this is placed. The arrow thats all alone on the right is it.


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Old 2007-03-18, 08:39 PM   #10
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Next up you will have to pull the intake manni up to get at these hoses. Red arrows indicate there location. They're under the throttle body

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Old 2007-03-18, 08:40 PM   #11
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Next you need to pull the manni out some to remove this hose.


And this hose. Both are located in the back side of the intake manni.


Right here


L=little hose. B=big hose
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Old 2007-03-18, 08:40 PM   #12
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Now comes the easy part. This is a pic of the front coil pack. Remove the bolt(8mm) and the connector.


And now remove the coil pack.


You can do 1 at a time(like i did)or remove all the coil packs and do all the plugs at once.

Heres the placement of the back coil packs. just do the same for the back as you did with the front.

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Old 2007-03-18, 08:41 PM   #13
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Just a shot of the old plugs and the new. The old ones have 72000 miles on them and i was getting 14 mpg so thats why i decided to change them. Hopefully this is the cause of the low mpg or else i will put a wood block under the gas pedal so the wife dont use all 200hp. lol.



Do yourself a favor and spend the 2 bucks on some anti-seize. These plugs are suppose to last 100k according to the dealer.*cough-bullshi*-cough*


Now that the plugs are changed just follow the directions backwards to put everything back together. Have fun. And remember you just saved yourself around 200 bucks by doing it yourself.
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Old 2007-03-18, 08:45 PM   #14
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mods/admin please put this in the right spot. i put it under mpv just to give mpv guys a heads up.
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Old 2007-03-18, 09:32 PM   #15
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also make it a sticky if you want to.
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Old 2007-03-18, 10:20 PM   #16
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That's a lot of work to change just the spark plugs!
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Old 2007-03-19, 04:22 AM   #17
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Quote:
Originally Posted by Intruder View Post
That's a lot of work to change just the spark plugs!
What's funny is my buddy's wife has one that's 1 year older with the 2.5 and you don't have to remove the intake manni.
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Old 2007-03-19, 08:36 AM   #18
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I think it would be easier to pull the engine out
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Old 2007-03-19, 07:46 PM   #19
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also check the pcv hose for leaks cause they had a big problem with them. they collapse and leak air and cause idling problems and lean codes. i have one in my stall and i waiting for a ok to fix it
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Old 2007-03-19, 08:35 PM   #20
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in fact, there was a recall on a certain build of those MPVs
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Old 2008-09-01, 11:49 PM   #21
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I know I'm somewhat late to this tread. BUT I have to say this was the thread that gave me enough "ballz" to flip the bird at my local mazda wanting to take food from the mouths of my family to fix a stuttering engine while idile. The service advisor suggested that I do three things to "fix" the jittering engine:

1. Fuel induction service
2. Transmission service
3. Replace PCV and PCV hose.

Well since I did the work myself I decided to change the plugs since it's sooooo damn annoying to have to remove an intake manifold just to do "minor" maintainence. While there I removed the old PCV and flattened PCV hose. As suspected the PCV looked like smokers lungs. Installed the PCV hose, etc.

Started the service as noted above today. Had to pack it up for the day. Should get back to it Wednesday. I'll let me you know how it turns out!
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Old 2008-09-02, 06:06 AM   #22
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Quote:
Originally Posted by lazarus View Post
I know I'm somewhat late to this tread. BUT I have to say this was the thread that gave me enough "ballz" to flip the bird at my local mazda wanting to take food from the mouths of my family to fix a stuttering engine while idile. The service advisor suggested that I do three things to "fix" the jittering engine:

1. Fuel induction service
2. Transmission service
3. Replace PCV and PCV hose.

Well since I did the work myself I decided to change the plugs since it's sooooo damn annoying to have to remove an intake manifold just to do "minor" maintainence. While there I removed the old PCV and flattened PCV hose. As suspected the PCV looked like smokers lungs. Installed the PCV hose, etc.

Started the service as noted above today. Had to pack it up for the day. Should get back to it Wednesday. I'll let me you know how it turns out!
Good luck. Let us know how it turns out.
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Old 2008-09-02, 08:03 PM   #23
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since this is kind of relevant....

M-Tip 5858
2001-2006 MPV
Intermittent Misfire under load - P0303/P0306

If after performing normal ignition system diagnosis and repair
for P0303 and P0306 the engine misfire continues, drain the fuel
from the fuel tank and inspect for water contamination and/or
poor quality fuel.
The fuel line is connected to the fuel distribution pipe where
the No. 3 (P0303) and No. 6 (P0306) injectors are located. Due to
their location in the fuel system, these cylinders are particularly
subject to misfires due to water contamination and/or poor quality
fuel.

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Old 2008-09-04, 02:14 AM   #24
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Have anything for a lean code(I think its 176) bank 1? When we fill the mpv no engine light. After time engine light. Fill back up no light. Have any advice?
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Old 2008-10-01, 02:03 AM   #25
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Quote:
I am not responsable for you screwing up your car.



You are right - the logistics engineers at Ford who "demanded" Mazda (by economies of scale) to squeeze their engine into the otherwise great MPV did...
Though the engine has run well until the other day when CEL started blinking every now and then. replaced the plugs for now - seems to have taken care of misfiring cylinfer
Your fix-guide worked excellent thanks!
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