first tune not so good
Page 1 of 2 12 LastLast
Results 1 to 15 of 18

This is a discussion on first tune not so good within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; So i had a couple problems, some bad some not so bad. 1st- My intercooler was leaking (solved for now) ...

  1. #1
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50

    first tune not so good

    So i had a couple problems, some bad some not so bad.

    1st- My intercooler was leaking (solved for now)
    2nd- My mbc wasn't working right. boost was up and down
    3rd- 2 spark plugs were cracked!
    4th- Tune was not completed because i need to figure out another issue. He said my timing was jumping across the map. He said maybe its bad gas or I need to do a compression test. Which i am doing tomorrow.

    Anyone know of anything else I should check for?

    08 wrx 66,000 miles
    Perrin intake
    Borla muffler
    DP no cat
    MBC

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    He simply abides. SD_GR's Avatar
    Join Date
    Jul 2002
    Location
    CA, US
    Posts
    22,711
    I Support ClubWRX
    Spark plugs don't just crack. Find out why. Look carefully at fueling vs. timing because I can't imagine how this happened otherwise.
    WRX Info Links, Courtesy TheJ
    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

  4. #3
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    he said they were probably put in wrong..

  5. #4
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    compression test
    #1 & 4 are 135.
    #2 & 3 are 140.

    What is the specs? Im looking and i think those are good but find sti's not wrx. I dont know if there is a difference

  6. #5
    Pro Manscaper Mikie13's Avatar
    Join Date
    Oct 2006
    Location
    Palmyra, NJ
    Posts
    20,971
    Those aren't really that bad though a little low, and they are all pretty consistent with each other which is what you want. Anywhere around 140 and above is considered normal.
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
    2012 Lightning Red WRX Sedan
    Stock...for now Soon to be OpenSource tuned by: Mattypants @ WTF Tuning

  7. #6
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    leak down test is next the tuner said. if i pass bad gas or coil

  8. #7
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    those readings are cold motor btw

  9. #8
    Pro Manscaper Mikie13's Avatar
    Join Date
    Oct 2006
    Location
    Palmyra, NJ
    Posts
    20,971
    Isn't the compression test supposed to be done on a warm motor?
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
    2012 Lightning Red WRX Sedan
    Stock...for now Soon to be OpenSource tuned by: Mattypants @ WTF Tuning

  10. #9
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    ive read both but according to him there fine. im getting the leak down anyway

  11. #10
    zax
    zax is offline
    \_(ツ)_/ zax's Avatar
    Join Date
    Nov 2008
    Location
    Neverland Ranch, Maryland
    Posts
    13,156
    I Support ClubWRX I Support ClubWRX
    That's OK for a cold motor. You should be doing compression tests on a warm motor per the shop manual (coolant temp > 100 degrees C IIRC)
    2015 CWP WRX STi ... But how did I get roped back into an EJ motor?!
    Zax's utterly unimaginably stock 2015 STi build thread
    Zax's Shaggin' Wagon Build Thread Now tuned for 99% pure Unicorn Jizz!

    Zach | Moderator -- Mid-Atlantic States, Tech & Modifying & General Repairs
    Rollin' with the Bugeye Mafia #302 | N.E.R.D. Subject Zero
    Facebook me here

    Your Mid-A local board: http://www.clubwrx.net/forums/mid-atlantic-states/

  12. #11
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    whats the best way to do leak down

  13. #12
    Registered User
    Join Date
    Aug 2012
    Location
    north jersey
    Posts
    50
    turn the crank to build pressure than read gauge?

  14. #13
    Moderator Donkey's Avatar
    Join Date
    Apr 2005
    Location
    Da boonies
    Posts
    6,149
    I Support ClubWRX
    You can do a compression test on a cold motor but you generally want to add some oil to the cylinders first. You don't want to do it dry. You can just pull the fuel pump relay and crank the motor over a couple times. But you do get more accurate results on a warm motor.
    Also for future reference: Technical Articles
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




  15. #14
    Moderator Donkey's Avatar
    Join Date
    Apr 2005
    Location
    Da boonies
    Posts
    6,149
    I Support ClubWRX
    Quote Originally Posted by Fusionf21 View Post
    turn the crank to build pressure than read gauge?
    Uh.....no. You need an air compressor and the cylinder needs to be TDC on the compression stroke. Google " cylinder leak down test"

    http://www.carcraft.com/techarticles...r/viewall.html
    Last edited by Donkey; 10-12-2012 at 01:14 PM.
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




  16. #15
    Registered User nsibanez's Avatar
    Join Date
    Aug 2012
    Location
    Tucson, AZ
    Posts
    1,811
    Quote Originally Posted by SD_GR View Post
    Spark plugs don't just crack. Find out why. Look carefully at fueling vs. timing because I can't imagine how this happened otherwise.
    Over torqued when they got put in could it it right?

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •