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Thread: Spark Plug?

  1. #1
    Jr. Mechanic Chevyman224's Avatar
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    Default Spark Plug?

    How do you know when it is time to change your spark plugs. I have 89,000 miles on my truck and never have changed them. Is it time? or should they be fine?

    2005 Chevy 2500hd 4x4
    5% tint all the way aroung
    325/60/18 Toyo Open Country At's
    18in kmc xd monster series
    Dual Flowmasters
    Rough Country leveling kit

  2. #2

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    G.M. said they are good for 100k.For me I changed them at 70k,along with new Wires.It come down to how your truck is running,good,bad.I would said pull a couple of them and see how they Look.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  3. #3
    Jr. Mechanic Chevyman224's Avatar
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    It seems a lil sluggish at times. But idk. It might be because its such a big engine and a heavy truck.

  4. #4

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    Quote Originally Posted by Chevyman224 View Post
    It seems a lil sluggish at times. But idk. It might be because its such a big engine and a heavy truck.
    Went was the last time you had the Throttle Body and injector's clean? That may be why your Truck is Sluggish.Thats just a Guess.

  5. #5

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    Idk about the plugs bug if your gonna get wires I suggest the MSD wires

    Im gonna change my plugs and wires soon. I plan on going with Bosch +4 Platiums and MSD wires... it seems like a very popular pairing
    2000 GMC Sierra Ext. Cab 5.3L

  6. #6
    Jr. Mechanic Chevyman224's Avatar
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    Um they were never cleaned that i know of.

  7. #7
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    TRPLXL2's Avatar
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    Default

    I am getting ready to change my spark plugs and wires on my S-10, and I just hit 50,000 miles on it. It is running like crap, so I figure it's time for a tune up. In the past when I have had injector problems on newer vehicles, it will get to a point where it will seem like you lose about 50-75 hp and it would almost cut out at an idle. Hopefully a tune up cures your problems, because once you get into the fuel system your talking some good money there.
    2004 Chevy Colorado
    LS1 5.7 swap/TBSS rear axle swap

  8. #8

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    i just put in some Bosch Platinum+2 plugs , and some standard autolite wires from a local advance auto store, the guy actually called around and compared prices to get me the best deal. i swear i'm probably getting twice the mileage now. i changed them at 95,000 i'm sure previous owner never changed em, they were burnt to a crisp. (05' 2500hd 6.0. silverado)
    http://www.boschautoparts.com/Produc.../Platinum2.htm


    Last edited by TroyT; 06-21-2009 at 11:13 AM.

  9. #9
    Jr. Apprentice BAMES's Avatar
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    I've used those Bosch Platinum +2 plugs before, they worked well on my truck. It's probably not a bad idea with the E10.
    BAMES

    1999 GMC Sierra
    5.3l 325 ci Vortec
    Vortex dual exhaust

    Other:
    2003 GMC Yukon 5.3
    1994 GMC Sierra 5.7

  10. #10
    Sr. Engineer
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    Default

    Throw some SeaFoam through your engine and it will clean out all the carbon buildup. Cleaning the MAF and throttle body is a good idea too. Change your oil, put in a new fuel filter then throw in some new plugs. You should be very happy with the newfound pep!
    Black Bear Performance- Custom Tuning Solutions

    Authorized EFILive and MAGNACHARGER seller

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