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Thread: 01 Blazer X - Bad mpg

  1. #16
    Draggin body packofqtips's Avatar
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    you can buy the 3 dollar ones and change them after 30k or get the 6 dollar ones and go 100k
    2009 ford fusion
    1997 bagged and body dropped suburban
    2003 yamaha road star warrior
    still got the 4 Door Love

  2. #17
    Draggin body packofqtips's Avatar
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    just be glad you dont have the big block vortec that needs the uridium plugs
    2009 ford fusion
    1997 bagged and body dropped suburban
    2003 yamaha road star warrior
    still got the 4 Door Love

  3. #18
    LQ4/LS1 Turner's Avatar
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    i put a set of the e3 plugs in my 4.3 and got between 1-2 mpg better.

  4. #19
    Administrator Blazin Low's Avatar
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    I changed the fuel filter (Purolator) today, and got the following for my tuneup

    AC Delco Cap
    AC Delco Rotor
    AC Delco 41-993 Platinum Plugs
    Borg Warner Premium Wires

    Ended up costing about $150 in parts.... hopefully i'll get that back in saved gas...if not, I'm going to replace both pre-cat 02 sensors.

  5. #20
    Zombie Killer 6SpeedBlazer's Avatar
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    Quote Originally Posted by Blazin Low View Post
    I changed the fuel filter (Purolator) today, and got the following for my tuneup

    AC Delco Cap
    AC Delco Rotor
    AC Delco 41-993 Platinum Plugs
    Borg Warner Premium Wires

    Ended up costing about $150 in parts.... hopefully i'll get that back in saved gas...if not, I'm going to replace both pre-cat 02 sensors.

    i personally would have replaced the o2 sensors first. i find it hard to believe that ignition parts that only have 50-60k on them would make you loose 8-10mpg.

  6. #21
    Administrator Blazin Low's Avatar
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    I have the o2 sensors too. I'll probably replace them next weekend when my buddys lift is available. I got the AC Delco AFS105's

    At least I can do the tuneup in the driveway.

    The truck has 57k miles now, but it sat for 4+ years, so I figure replace it all since all the parts are 9 years old.

  7. #22
    Zombie Killer 6SpeedBlazer's Avatar
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    Quote Originally Posted by Blazin Low View Post
    I have the o2 sensors too. I'll probably replace them next weekend when my buddys lift is available. I got the AC Delco AFS105's

    At least I can do the tuneup in the driveway.

    The truck has 57k miles now, but it sat for 4+ years, so I figure replace it all since all the parts are 9 years old.
    i guess it cant hurt to do it all.

    on the 02 sensors. i suggest using the box end of a 7/8" wrench. the pigtail does not fit through the box end but you can either cut the connector off or remove the pins from the connector. i prefer to remove the pins because i hate o2sensor sockets.

  8. #23
    Administrator Blazin Low's Avatar
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    UPDATE:

    Previous mileage per tank: 240

    Did cap, rotor, wires, plugs --- > 260

    o2 sensors -> 325 on the first tank (alot of highway) 300 on the 2nd (more mixed city/hwy)

  9. #24
    Zombie Killer 6SpeedBlazer's Avatar
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    :spin:

  10. #25
    Administrator Blazin Low's Avatar
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    My mileage is in the shitter again...

    I am running the AC nowadays, but the last few tanks Ive been getting about 13.5mpg

    the last tank i went 257 miles filled it up and it took 19.2 gallons = 13.38mpg

    Alot of the last tank was highway too. I dont smell any gas in the cab, and it seems to run OK....

    What to do?

  11. #26
    I'm BATMAN! Harley's Avatar
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    This is what you've already done:

    Fuel Filter
    AC Delco Cap
    AC Delco Rotor
    AC Delco 41-993 Platinum Plugs
    Borg Warner Premium Wires
    O2 Sensors

    Looking over the thread and 6speeds suggestions I'd order up a Fel-Pro intake gasket kit (factory are known to break down before they should, so it doesn't hurt to replace sooner rather than later) and check to see if you're injector pod is leaking. I've pulled a couple intakes off this age of truck and it isn't a terrible job. Give yourself an afternoon and evening and you should be set.
    Black 'n Tanazer, Long Bed, Coupe Quattro, Old Caddy, Old Rice

    Member of the SCUDS Task Force
    Spike Clean Up & Disposal Service

  12. #27
    Administrator Blazin Low's Avatar
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    How do i check for a leaky injector pod? Are there 6 of them?

  13. #28
    Zombie Killer 6SpeedBlazer's Avatar
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    Quote Originally Posted by Blazin Low View Post
    How do i check for a leaky injector pod? Are there 6 of them?
    look into the intake manifold and see if there are pools of gas. if there is gas i remove the upper intake then reinstall the fuel lines and pressurize the system and track down the leaks.

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