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How To Gap Your Spark Plugs: 101


YOOT

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  • Member For: 21y 8m 14d
  • Location: Birkdale
If you leave the gauge in when you regap the plug there's no way you can go to far. Just be gentle!

<{POST_SNAPBACK}>

Bit hard to hold the guage and the plug together and tap the bastards. Also, what can happen is the pin can compress ( it is very soft ) and the electrode will bend.

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  • Member For: 21y 1m 4d
  • Gender: Male
  • Location: brisbane
If you leave the gauge in when you regap the plug there's no way you can go to far. Just be gentle!

that's what I did...... Hey red, I also had an oily residue on the TB outer lip... cleaned it off and away I went...... It wasnt baked on though.

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  • Here since the start...
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  • Member For: 21y 10m 7d
  • Gender: Male
  • Location: Victoria
If you leave the gauge in when you regap the plug there's no way you can go to far. Just be gentle!

<{POST_SNAPBACK}>

Bit hard to hold the guage and the plug together and tap the bastards. Also, what can happen is the pin can compress ( it is very soft ) and the electrode will bend.

<{POST_SNAPBACK}>

I've gapped quite a few plugs in my time and it's never been a problem, although I don't tap them on the ground like you have. Whatever floats your boat I guess! :mexicanwave:

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  • Member For: 22y 1m 2d
  • Gender: Male
  • Location: Sydney
I noticed my TB had an oily residue in the bottom. I rubbed it with my thumb and it didn't come off. I think it was baked on there!

Other than that it was very clean and look good. I dead set sure the car runs better like that. The boost just seems more solid now, maybe the cylinders are getting a better combustion now? Maybe I am full of it!

Can't wait for the Edit!

<{POST_SNAPBACK}>

Maybe a can of that Throttle Body Cleaner spray stuff could come in handy?

I've used that on a few car and damn it helps a hell of alot :blink:

Lumpy :mexicanwave:

<{POST_SNAPBACK}>

Go to your local Subaru dealer, and ask for a can of "Upper Engine Cleaner" p/n SA459, this stuff is the business for removing any sort of baked on crud inside your T/B, and intake system. Its kinda pricey (bout $15 a bottle), but you get what you pay for! :spoton:

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Guest mercurysteve
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Thanks George :spoton: . When I was edited, I was told @ 248.9rwkw the valve springs were letting go and the fuel ratios were maxed out, running only 9 psi.

By gapping the plugs without getting new valve springs, fuel pump and injectors, my understanding is I cannot run any more boost anyway. Is this true guys? :blink:

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  • In Your Face
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  • Member For: 21y 11m 24d
  • Gender: Male
  • Location: Peninsula
Thanks George :bowdown: . When I was edited, I was told @ 248.9rwkw the valve springs were letting go and the fuel ratios were maxed out, running only 9 psi.

By gapping the plugs without getting new valve springs, fuel pump and injectors, my understanding is I cannot run any more boost anyway. Is this true guys? :blink:

<{POST_SNAPBACK}>

If you had problems with vavles at that stage then it's time to upgrade them Steve

Valves....Injectors and Fuel pump :bowdown:

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  • Member
  • Member For: 21y 8m 14d
  • Location: Birkdale
I noticed my TB had an oily residue in the bottom. I rubbed it with my thumb and it didn't come off. I think it was baked on there!

Other than that it was very clean and look good. I dead set sure the car runs better like that. The boost just seems more solid now, maybe the cylinders are getting a better combustion now? Maybe I am full of it!

Can't wait for the Edit!

<{POST_SNAPBACK}>

Maybe a can of that Throttle Body Cleaner spray stuff could come in handy?

I've used that on a few car and damn it helps a hell of alot :blink:

Lumpy :bowdown:

<{POST_SNAPBACK}>

Go to your local Subaru dealer, and ask for a can of "Upper Engine Cleaner" p/n SA459, this stuff is the business for removing any sort of baked on crud inside your T/B, and intake system. Its kinda pricey (bout $15 a bottle), but you get what you pay for! :bowdown:

<{POST_SNAPBACK}>

Cheers, now how do I spary that sh*t in without the crud running down into the intake plenum?

I so can't be bothered taking all those pipes off again!

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