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    Quick Links: Low Coolant Sensor on Coolant Reservoir 2.7 2007 2016 SR 2.7L towing 2.7L oil capacity Changing Diff Fluid ?'s and i read all the other posts Oil filter wrench Best Exhaust Choice

terrible stumble

Discussion in '4 Cylinder' started by bsb120, Jan 31, 2015.

  1. Jan 31, 2015 at 7:27 PM
    #1
    bsb120

    #1
    bsb120 [OP] Well-Known Member

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    Ok got a 2000 prerunner 2.7 When taking off from a complete stop the truck hesitates kinda stumbles then catches up and everything is fine. It has just started. The fuel filter was replaced not long ago. Everything seems fine. Every now and again there's a quick pop not real loud almost soubed like a backfire. Possibly a bad spark plug?
     
    bsb120, Jan 31, 2015
    #1
  2. Jan 31, 2015 at 7:34 PM
    #2
    Steves104x4

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    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Installing new plugs would be a good start. Check for dry, brittle or cracked vacuum lines.
     
    Steves104x4, Jan 31, 2015
    #2
  3. Jan 31, 2015 at 7:55 PM
    #3
    bsb120

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    bsb120 [OP] Well-Known Member

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    well the vacume lines seem fine but, i changed the plugs like a year ago. i just dont understand what it is the exhaust acctually sounds a little raspy and the tail pipe is black inside and out.
     
    bsb120, Jan 31, 2015
    #3
  4. Feb 1, 2015 at 1:09 AM
    #4
    nickonfire700

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    nickonfire700 Reg. Cab Nation Member

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    Try cleaning the throttle body, and the MAF sensor as well.
     
    nickonfire700, Feb 1, 2015
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  5. Feb 1, 2015 at 5:52 AM
    #5
    bsb120

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    bsb120 [OP] Well-Known Member

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    Cleaned the maf sensor not long ago as well. But I guess it can hurt to do It again.
     
    bsb120, Feb 1, 2015
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  6. Feb 1, 2015 at 5:53 AM
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    hetkind

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    hetkind Well-Known Member

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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    you have a misfire...start with a tune up and then start looking for other problems.

    Howard
     
    hetkind, Feb 1, 2015
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  7. Feb 1, 2015 at 7:46 AM
    #7
    bsb120

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    bsb120 [OP] Well-Known Member

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    why is there no check engine light?
     
    bsb120, Feb 1, 2015
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  8. Feb 1, 2015 at 8:15 AM
    #8
    hetkind

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    hetkind Well-Known Member

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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    because it won't give EVERY cause for a misfire...
     
    hetkind, Feb 1, 2015
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  9. Feb 1, 2015 at 8:54 AM
    #9
    bsb120

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    bsb120 [OP] Well-Known Member

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    Hmm well I pulled a plug and its deffinatly running rich. It's black around the bottom but them haven't been in there long
     
    bsb120, Feb 1, 2015
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  10. Feb 1, 2015 at 9:07 AM
    #10
    hetkind

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    hetkind Well-Known Member

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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    it is the correct heat range? are you having terrible gas mileage? is it getting good spark?

    Those would be my first three questions.

    Howard
     
    hetkind, Feb 1, 2015
    #10
  11. Feb 1, 2015 at 9:33 AM
    #11
    bsb120

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    bsb120 [OP] Well-Known Member

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    Heat is fine. Gas mileage has been slowly declining for a while went from 19.7 to 18.8 over the coarse of about 2 months according to the ultra gauge
     
    bsb120, Feb 1, 2015
    #11
  12. Feb 1, 2015 at 10:49 AM
    #12
    hetkind

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    hetkind Well-Known Member

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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    I would look for a failure in the ignition system...does that motor use the individual coil towers?

    Howard
     
    hetkind, Feb 1, 2015
    #12
  13. Feb 1, 2015 at 11:38 AM
    #13
    bsb120

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    bsb120 [OP] Well-Known Member

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    I'm not sure. It's the 2.7 from 2000 just changed the plugs. Cleaned the throttle body I'm waiting on the k&n to wick all the oil it needs then I'll test drive an. Check for improvments
     
    bsb120, Feb 1, 2015
    #13
  14. Feb 1, 2015 at 12:16 PM
    #14
    hetkind

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    hetkind Well-Known Member

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    bilstein set at 1.75, Racho 5000 rear with 4 leaf kit, floor mats, high lift jack, pull hook in hitch, bed rail corner braces, severe duty brake pads and devil horns on the grill....
    oh...I think I just found why your plugs are fouling...how about you put fresh plugs in and try a paper air filter?

    Howard
     
    hetkind, Feb 1, 2015
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  15. Feb 1, 2015 at 12:29 PM
    #15
    bsb120

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    bsb120 [OP] Well-Known Member

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    It's fixed now. But I have had a paper filter. But if had the k&n for probley 2 years with no problem . But it's fixed now
    thanks for all the help guys
     
    bsb120, Feb 1, 2015
    #15
  16. Mar 10, 2015 at 6:59 PM
    #16
    bsb120

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    bsb120 [OP] Well-Known Member

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    and now its back. I have changed to a paper filter again and claned MAF
     
    bsb120, Mar 10, 2015
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