i changed the plugs in my H6 last night, WOW what a poor design flaw.
is there any tips to make this job go alittle faster than 3 hours.
Dar
is there any tips to make this job go alittle faster than 3 hours.
Dar
changing spark plugs>>H6
1 - 17 of 17 Posts
Yes. On the driver side, take the battery and washer reservoir out. This makes room to remove the coils.
On the pass side, its just a tight fit. Really nothing you can move out of the way. You could remove the one engine mount nut on that side and jack the motor up as his will help clear the body rail.
(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
Joined
·
19,681 Posts
I wish I could have done it in only 3 hours the first time.
I had to use a length of wood and my floor jack to push the engine up a little to re-install the DS rear coil.
'wobble' plug socket and 'wobble' extensions help get the tools in/out.
I had to use a length of wood and my floor jack to push the engine up a little to re-install the DS rear coil.
'wobble' plug socket and 'wobble' extensions help get the tools in/out.
One major one--do them from the bottom. I can't imagine trying it from the top, just don't see how that could possibly be easier.
Otherwise, here's what I learned when I was changing mine: http://www.subaruoutback.org/forums...40473-h6-plug-change-not-quite-bad-hyped.html
Otherwise, here's what I learned when I was changing mine: http://www.subaruoutback.org/forums...40473-h6-plug-change-not-quite-bad-hyped.html
with the valve cover gaskets off it's much easier. i did mine when the valve cover gaskets were off and it was actually easy from underneath.
will do my other one soon too and will replace the valve cover gaskets as well.
it's not a design flaw either - cars are not designed with your comfort level or ease of maintenance in mind....no one purchases that way so dealers would be silly to design as such.
note - there are quite a few vehicles (no subarus) that require the engine to be lifted to replace the spark plugs (all the ones I know of are American vehicles). now that is a bit much for me....but only because i'm used to Subaru's.
will do my other one soon too and will replace the valve cover gaskets as well.
it's not a design flaw either - cars are not designed with your comfort level or ease of maintenance in mind....no one purchases that way so dealers would be silly to design as such.
note - there are quite a few vehicles (no subarus) that require the engine to be lifted to replace the spark plugs (all the ones I know of are American vehicles). now that is a bit much for me....but only because i'm used to Subaru's.
Or Ford F series where the rear of the engine sits under the cowl and you can barely fit a hand in to clean an IAC, or having to replace a forward O2 sensor and the harness plug is midway between the top of the head and exhaust with 1.5 inches between the engine and firewall. Still can't figure that one out except it saved a few bucks a truck in harness cost. So some manufacturers don't even consider replacement of maintenance items in their design.
Subaru is an easier vehicle to work on compared to others. You just don't have other vehicles to compare it with.
Subaru is an easier vehicle to work on compared to others. You just don't have other vehicles to compare it with.
Oh yeah i did it from the bottom, On the pass side i did put a small port-a-power between the engine and frame and moved it over about 1 inch, that help alot, as well as all the corect tools, i just didn't want to unhook the motor mounts to raise it up, although i probly will the next time.
i think maybe raise it up and scoot it over mite be the way to go.
i think maybe raise it up and scoot it over mite be the way to go.
Kind of like doing that 6th injector on your Dodge...some jobs are a pain.
I have an 06 3500 Ram in the fleet.
My 6th injector is easier to get to than yours. 
![]()
but there are things that are a pain on everything i guess.
just never thought it would ever take me 3 hours to change plugs...
but there are things that are a pain on everything i guess.
just never thought it would ever take me 3 hours to change plugs...
As someone already mentioned the first step on a head gasket job for some ford powerstroke trucks is #1 "remove the cab"
what were they thinkin.
what were they thinkin.
On Ford stupidity. Have one in the shop now for ignition plugs replacement. 5.4 3 valve POS. The coils were removed and plug ports flooded with PB Blaster and sat for 5 hours. 7 of 8 plugs broke off. This morning, I'm going in to remove the lower portion of the broken plugs. The rear of the engine will be the most difficult because of the placement of the engine. I will probably spend about 3 hours getting them removed and replaced.
Ford is the worst for building a vehicle for maintenance. It's like they are put together as if nothing will ever go wrong and reg scheduled maintenance is labor intensive.
Ford is the worst for building a vehicle for maintenance. It's like they are put together as if nothing will ever go wrong and reg scheduled maintenance is labor intensive.
I heard the new powerstrokes are that way.
I had a ferrari 348; to change belts the first step was remov.e the car from the engine cradle.
+1 on this!! I have a '98 Lincoln Navigator; last two spark plugs/coils on each side are so far back under the cowl you can't even see them. When I needed plugs, I waited until a local dealer had a "loss leader" special and let them do it. Coils are starting to die (not unexpected at 270K) so my ground rule is that I will replace 1,2,5 and 6; my mechanic will do 3&4 or 7&8 as one on each side fails. End of rant!!!
on the other side of the coin, i think the easiest stock vehicle i ever changed plugs on was my 94 corvette. With the hood tilted forward, the entire engine is available to work on.
the old 84 F250 with straight six was pretty easy too, you just climbed up and sat in the engine bay next to the engine.
the old 84 F250 with straight six was pretty easy too, you just climbed up and sat in the engine bay next to the engine.
1 - 17 of 17 Posts
