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Subies don't like hot weather...


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Understanding gasoline and knowing that using WAY gigher octane than is called for really does no good, I put 89 octane in my Legacy and I gave 88 a shot in my XT (There is a gas station in town that has 87,88,89,91, and 93 octane..)

 

Both cars pinged a little when I got on it. So I put a couple bucks of 93 in each and guess what? They both still ping a little :madder: I think next tank on both, I'm going to try 91, I know for a fact that the Legacy doesn't like a whole tank of 93...

 

Is it the fact that the ambient temperature right now in Orlando is in the mid-90's, or do both my Subies have excessive carbon buildup?

 

Whatever it is, I cringe when I hear that nasty pinging...:mad:

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That can't be it on the Legacy, simply because the Legacy has electronic ignition controlled by the ECU.

 

That said, I've been spoiled with coilpacks the whole time I've owned and worked on cars, and therefore know little about distributors.

 

But, I did look on the XT, and the disty is turned as far clockwise as possible, which means it's as retarded as possible (right?)! So that can't be it either...

 

I'm calling carbon buildup on this one. I'll probably do an engine cleaner/induction service on them and see what happens from there...

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Reoff, it should be counter-clockwise. If the engine spins clockwise, then the rotor must spin counter-clockwise, since it's gear-driven. Also dig out a firing order and diagram (in a Haynes, for instance) and you will see the firing order go around the disty counter-clockwise...

 

Unless I'm not looking hard enough, I don't think I have a vacuum advance. I see no diaphragm on the disty, nor do I see a vacuum hose going to it anywhere...

 

I put 91 octane in it and it went away, but as we know, it should take 87:temper:

 

I guess I'll just hafta play with it, and teach myself a few things about distributors in the process:-\ :o

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