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05-13-2002, 03:10 PM | #1 |
Scooby Newbie
Member#: 17657
Join Date: Apr 2002
Location: Massachusetts
Vehicle:1995 Legacy Wagon White |
When to change spark plug wires?
Quick question... how do you know when to change your spark plug wires? Is there a certain resistance measurement on an Ohmmeter? Something physical I should look for?
Also, tonight I'm doing as much routine maintance as I can on my exwifey's 94 impreza L (130K Mi) before she moves with it to NYC where repairs will cost an arm and a leg. I'm planning to do spark plugs, brake pads, oil change, fuel filter, rotate tires, etc. Anything else anybody can suggest I should do? Thanks! RTS
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05-13-2002, 11:07 PM | #2 |
Scooby Newbie
Member#: 18690
Join Date: May 2002
Location: omaha
Vehicle:99 impreza silver |
in response
i replace my plug wires every 5000 miles every time i get my tires balenced and roteted replace the air filter as well.
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05-13-2002, 11:12 PM | #3 |
*** Banned ***
Member#: 10615
Join Date: Sep 2001
Location: sunny so cal
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damn.......evey 5k? you either got lots of cash or just luv ur car way too much..............but anyway, as for the resistance you should be getting...........i believe it should be 500 ohm per foot. or you could just go w/the manual recommendation.......as for other maintaince......go to a dealer and pick up a schedule maintance........it'll list everything you need to do
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05-13-2002, 11:21 PM | #4 |
Scooby Specialist
Member#: 9213
Join Date: Aug 2001
Location: My grandma was 6' 6"
Vehicle:2000 RS Red |
?!?! You're wasting money changing your wires that often. Maybe you meant plugs? Filter too after 5k? Get a K&N...those last forever and flow more air too. The ohms are a bit higher than 500/ft. I'd go ahead and change them every 30k miles afterwards. That's what I have done on every car I've owned.
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05-13-2002, 11:24 PM | #5 |
Scooby Newbie
Member#: 18690
Join Date: May 2002
Location: omaha
Vehicle:99 impreza silver |
they only cost
they only cost 24 dollars for a set of wires and i just want to keep it running for as long as i can.
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05-14-2002, 01:06 AM | #6 |
Scooby Specialist
Member#: 9213
Join Date: Aug 2001
Location: My grandma was 6' 6"
Vehicle:2000 RS Red |
I would bet there is absoluetely no difference between wires you swap out at 5000 miles and the wires you put in your car. $24 extra per oil change...that's a waste of money. Spend that extra money and get some good oil, like amsoil or redline, and a k&n filter. That would do so much more for you car than changing plug wires every 5000 miles. Or buy a set of magnecor's.
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05-14-2002, 10:06 AM | #7 |
*** Banned ***
Member#: 2992
Join Date: Nov 2000
Chapter/Region:
NESIC
Location: Connecticut, USA
Vehicle:02 WRX Sedan Silver |
The info below is applicable to a 2002 2.5L engine, not a 1995 2.2L. But it still might be useful.
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05-14-2002, 10:58 PM | #8 |
Scooby Specialist
Member#: 11778
Join Date: Oct 2001
Chapter/Region:
MWSOC
Location: Illinois
Vehicle:1980 VWRabbit Diesel w/AAZ Swap |
hey man where did u find that pic? that is cool...
-ERIC |
05-15-2002, 09:38 AM | #9 | |
Scooby Newbie
Member#: 4116
Join Date: Feb 2001
Location: Humboldt County, CA
Vehicle:2002 Impreza TS White |
Re: in response
Quote:
Really, this might still be cheaper than a hooker every 5,000 miles, but don't pretend like this maintenance fetish is doing your car any good... If you have an irresistable urge to do this, then keep two sets of plug wires and two air filters and just swap them in and out them every 5,000 miles... LOL. Ben |
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05-15-2002, 05:38 PM | #10 | |
Scooby Guru
Member#: 1134
Join Date: Mar 2000
Chapter/Region:
MAIC
Location: Mechanicsburg, PA
Vehicle:2015 Outback H-6 White |
Quote:
Same argument as Monster Cable for a car. It's a huge ripoff, they have the market cornered. Just good advertising and scare tactics. Truth be told, blind sound tests show no improvement between bought-from-the-spool, cheap Home Depot/Radio Shack speaker wire and something like Monster/Kimber Kable/ etc. So long as you have the proper GAUGE (thickness), the rest is irrelevant. While all the principles surely don't apply to cars and sparkplug wires, it's still just wiring, still just electrical connectivity, so ... I can see why the argument's out there. Up to the buyer. -S2- |
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05-15-2002, 06:28 PM | #11 |
Scooby Specialist
Member#: 9213
Join Date: Aug 2001
Location: My grandma was 6' 6"
Vehicle:2000 RS Red |
I have a set, and the only reason I got them, wasn't for performance, but it was so I wouldn't ever have to buy another set of wires. I know any performance gains (if any) are very slight. The only tests I did for myself, was test resistance of the wire when brought up to engine temps. The resist of the stock wires almost tripled, and the magnecores stayed the same...only going up a few hundres ohms.
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05-17-2002, 04:15 PM | #12 |
Scooby Specialist
Member#: 11620
Join Date: Oct 2001
Location: Ontario
Vehicle:1997 GF4-STiV3 clone |
Replacing wires that are not obviously deteriorated is a waste. I had the original skinny wires on my 11 year Toyota with 0 ignition trouble. Started like a dream, no RF noise and performed great.
Maybe replace them at 5 years, but no way with oil changes. Magnacores are good. They do not claim any performance improvement. They just state that they are high quality and will not be problem like some bargain wires. You can find them on-line for $60. For some cars it may give 1 or 2 hp. Supposedly Subaru wire and ignition is high quality and you will get no performance gain from just wires. As for the '94, if they look ok and are still flexible, just leave them until they do break. Save your money for the next real repair like the brakes, rad or a/c. PS Spend the wire money on changing the tranny, diff and rad fluid instead. |
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