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Rough start when turning 98 tacoma 2.4L on

Discussion in 'Technical Chat' started by Mac98, Jun 8, 2012.

  1. Jun 8, 2012 at 8:28 AM
    #1
    Mac98

    Mac98 [OP] Member

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    Hey new to the forum and still doing a lot of researching. Just picked up my 98 tacoma 2 days ago and am in the process of researching all my maintenance I need to do.

    The truck idles fine and runs great. It has 175k miles, but when I turn key to start it really hesitates and keeps cranking. It barely turns over, but always does.

    Like I said Im going to replace all fluids and plugs here in the next week, but what are some things I can be looking for to help it have a more healthy start.

    Thanks in advance!!

    Mac
     
  2. Jun 8, 2012 at 8:33 AM
    #2
    98tacoma27

    98tacoma27 is going full "Ben" Moderator

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    Some stuff. Not a lot, just some.
    Is it a slow crank? Or it just doesn't fire initially?
     
  3. Jun 8, 2012 at 9:12 AM
    #3
    Mac98

    Mac98 [OP] Member

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    It's not a slow crank. It just cranks for longer then it should and then barely turns over.
     
  4. Jun 8, 2012 at 9:23 AM
    #4
    Demon Taco

    Demon Taco Well-Known Member

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    Fuel filter ?
     
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  5. Jun 8, 2012 at 10:16 AM
    #5
    98tacoma27

    98tacoma27 is going full "Ben" Moderator

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    Some stuff. Not a lot, just some.
    There's a lot of things it "could" be.

    Do you know where the MAF sensor is?
     
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  6. Jun 8, 2012 at 11:36 AM
    #6
    Mac98

    Mac98 [OP] Member

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    Yes, right off the intake tube before the intake box, right? What should I check on that?

    I know its a super broad question, and many possible problems, but Im looking for a few common problems or things to check.

    I appreciate all the help!!
     
  7. Jun 8, 2012 at 11:38 AM
    #7
    98tacoma27

    98tacoma27 is going full "Ben" Moderator

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    Some stuff. Not a lot, just some.
    Try cleaning it once. Disconnect it before you spray it. Use MAF cleaner. Make sure it's dry before you plug it back in. Try starting it and see what happens. If it still starts the same, disconnect it and try starting it again.
     
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  8. Jun 8, 2012 at 11:56 AM
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    Mac98

    Mac98 [OP] Member

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    Great, Ill pick up some of that cleaner tonight and give it a shot.

    Youre saying if it starts the same disconnect it and start it disconnected?

    Any other possible things I can clean or adjust that you can think of?

    Thank you!
     
  9. Jun 8, 2012 at 11:58 AM
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    98tacoma27

    98tacoma27 is going full "Ben" Moderator

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    Some stuff. Not a lot, just some.
    Yes. It may throw a CEL when it's disconnected though
     
  10. Jun 8, 2012 at 12:00 PM
    #10
    Mac98

    Mac98 [OP] Member

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    Ok Ill give that a shot and see what happens, thanks!
     
  11. Jun 9, 2012 at 10:09 AM
    #11
    Mac98

    Mac98 [OP] Member

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    Bump for anymore ideas.

    I think I found a vacuum leak so I'm going to try and find that. Changed the oil last night with Mobil 1 syn high mileage and it runs a little better.
     
  12. Jun 9, 2012 at 6:25 PM
    #12
    Ga tacoguy

    Ga tacoguy Well-Known Member

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    :) To help your looking for solutions, Demon Taco has suggested, the Gasoline filter. That is good place to start, but do you have idea of the prior servicing of the Taco ? Has anyone changed the timing belt ? your problem sounds more fuel related, so you may want to check your fuel filter first, then your fuel pump, then your intake butterfly to see if it clogged with carbon.
    Good Luck and Welcome to the Forum.
     
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  13. Jun 9, 2012 at 10:01 PM
    #13
    Mac98

    Mac98 [OP] Member

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    Thanks for the welcome.

    I was reading about it and talking to a few guys that said its a total PITA. How do I check to see if its good or not? I just bought the Haynes manual today so Im soaking that up too.

    Not to sure on prior maintenance, but Im guessing minimal. The oil that I changed was pretty bad. The 2.4L has a chain, so I lucked out there. :)

    Thanks for the input!
     
  14. Jun 15, 2012 at 7:50 AM
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    BamaToy1997

    BamaToy1997 Wheel Bearing Master

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    When you say cranks longer that it should, I get that...extended crank times...but then you say it "barely turns over" can you explain that in more detail? I will say though that many extended cranks are usually a fuel related issue. (though not a rule) so a fuel pressure gauge would be a smart investment. You need to be able to measure the fuel pressure at the rail though, which is difficult on the Toyota. (never could figure out why they never put a fitting on the older Toyota) Pull the vacuum line from the fuel pressure regulator. Does it have fuel in the vacuum line? If it does, you have a faulty regulator. There are many other possibilities from faulty fuel pump check valves, to bad pumps, clogged fuel filters, etc. The more detailed information we have the better. Is there a chance you could post a video/audio clip of starting your truck?
     
  15. Jun 20, 2012 at 11:16 PM
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    Mac98

    Mac98 [OP] Member

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    Sorry for the late response Bill. I really appreciate the detailed help. I changed the spark plugs in it today and unfortunately the old ones were in pretty good shape, and the start issue is still there. I will try and get a video tomorrow and post it up. I will pull the vacuum line and check for fuel. Anything otherfuel related issues that I could do a quick troubleshoot on? I think the auto hobby shop on base should have a fuel pressure gauge.

    Thanks in advance,
    Mac
     
  16. Jun 24, 2012 at 8:17 PM
    #16
    aptech

    aptech Jetfixer

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    your battery is getting week pull it and have it checked.
     
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  17. Jun 25, 2012 at 8:35 AM
    #17
    Robertgeejr1

    Robertgeejr1 Well-Known Member

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    Here is one thing i did beside complete tuneup, I had to replace the battery cables, and when i did i really cleaned the ground connections with a wire brush, one in the engine compartment and one on the block.
     
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  18. Jun 25, 2012 at 8:40 AM
    #18
    aptech

    aptech Jetfixer

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    i just did this to my wifes car. same symptoms as yours op.
     
  19. Jun 25, 2012 at 8:42 AM
    #19
    aptech

    aptech Jetfixer

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    love your sig cant stop looking lol :drool:
     
  20. Jul 5, 2012 at 10:32 PM
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    Mac98

    Mac98 [OP] Member

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    Did a compression test and it was 95, 195, 195, 205 :(


    Any advice on places with good used engines or advice on rebuilding?
     
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