Subaru Svx – Answers.com

31 Jan 2015 | Author: | Comments Off on Subaru Svx – Answers.com

Frequently Asked Questions

Where can you find a new power window relay or even switch the circuit breaker for a 1992 Subaru SVX?

How do you change the spark plugs on a Subaru SVX 3.3L engine?

The procedure is exactly the same for ALL SVX engines

Take a deep breath and settle in, it’s a long process. You’ll need the obvious tools:* Ratchet* Spark Plug Socket (5/8)* Three-inch and six-inch extensions.* 12mm boxed end wrench (the longer the better). * Retrieval tool (I use the claw type – the magnetic type works also ) is helpful when you drop extensions, sockets, etc.* Pry bar for easing out the coils (a small one with a slight bend on the flat end * Flat bladed screwdriver is also a helpful tool.

I used one to separate my ratchet from the extension so I could finish backing out the plugs by hand.* 10mm socket or flat wrench to remove your battery terminals. PREPARATION Remove the battery.Remove the air filter box.It is easier if you remove the entire box complete with bracket. One of the bolts in the bracket also goes through the bracket of the ABS unit, but, if you just remove the bolt on that one corner, the bracket on the air box should just slide out.

I saved the worst for first (rearmost driver’s side). It’s in the tightest spot. Undo the 12 mm bolt that holds each coil pack. Don’t pull it all the way out. Back it out until the threads begin to emerge from the coil pack housing (you’ll need to pull on this to pop the coil pack out).

Once the bolt has reached this point, begin to pull on the bolt. If the coil doesn’t pop off, keep backing out the bolt until it does. If you back the bolt all the way out and the coil doesn’t come out, then, screw the bolt back in about half way.

Remember the pry bar? Take the slightly bent end and place it on the shoulder of the bolt, then, using the engine block for leverage, gently pry against the bolt. It won’t take much pressure to pop it out.

It is very rare that they come off, but, once the coil is out, check to make sure the rubber boot is still on the end of the coil. If it isn’t, you’ll need to fish it out, possibly with a very long screwdriver. It’ll be difficult to check this one, because there’s only one place you can put it to get it out of the way, and that’s to your left, up in the little recess left from pulling the coil. Try to make sure you don’t stress the wires, or pry against them (coils are expensive)

If you have to fish out a boot, make sure you don’t damage it. The only way you can replace the boot is either by knowing someone who has one, or by buying a new coil. With the coil pack out of the way, remove the access plug from the fender well (Just look right across from the place you removed the coil – it’s also interesting that this access hole is not mentioned in the service manual – the manual is totally sketchy about a plug change).

You should now be able to push you wrench with a six-inch extension and your plug socket through the hole in the fender well – yeah, it’s a pain, but, believe me, it’ll still be easier than trying to do it without it (if you need to get the tire out of the way, just jack your car up a few inches). The recess will practically guide your socket to the plug. This is where normal kind of takes over. Just back out the plug like you would normally.

When it gets to a point where it’s loose enough, take the ratchet off of the extension and back it the rest of the way with your fingers, so you can feel when it’s coming out. Then, put in your fresh plug.

Make sure you start the plug by using just your extension and your fingertips – you don’t want to cross-thread the plug. Luckily, the plug practically threads itself if you do it gently . (Note: I did not re-gap my plugs. They came factory gapped at .040.

The recommended gap is from .039 to .043. I figured .040 was good enough for middle ground, plus, I didn’t want to take a chance on damaging any of the platinum bits – they look fragile) .

Once you’ve gotten the plug as tight as you can get it with your fingers, then, attach the ratchet and tighten her down. Torque spec is 14-22 ft.lbs. I didn’t use a torque wrench, I trusted my instincts.

If you’ve changed plugs before, you can feel the not too tight, not too loose point. Now, all that’s left is replacing the coil. Once you’ve taken it off, it’s easy to figure out how to put it back on.

Don’t forget to put the access plug back in – you’d hate to be throwing water into the engine bay on rainy days.

The rest of the plugs are similar. Working toward the front, your next is a bit of a bear, but, you can use your three-inch extension and the coil is easier to get out of the way. Of course, the front driver’s side is the easiest.

You’ll have the most room here.

Moving to the other side, again, the access hole will make the work easier on the rearmost plug. The coil is easily moved out of the way.

If you’ve removed the bracket for the air box, your job should be pretty much a piece of cake from here on out. Once you’ve gotten that first bear plug out, then (or this is how it worked for me), your confidence level will be up enough to complete the job.

Again, be careful of boots, wiring, etc. and, DO NOT put never seize compound on the plugs. It’s a big no-no, both from Subaru and from NGK. The temperature of our engines makes the compound too hard.

Pieces could possibly fall into the plug holes and into the cylinders – definitely not good.

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