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Thread: 1jz in MA61 making boost problem

  1. #1
    Forum Member Grease Monkey
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    Default 1jz in MA61 making boost problem

    Hey everyone
    I need your help with a problem I have with my 1jz powered MA61. I've only just put the 1j in after removing it from a crashed 61 (don't ask lol) and now am having some trouble with it when ment to be hitting boost when driving.

    It runs fine just makes no boost when it's ment to be boosting.

    Need to get this thing right for a drift event coming up soon haha.
    Any help would be great thanks in advance guys

    Steve.
    Last edited by Sideways Supraboy; 02-11-2010 at 02:10 PM. Reason: New problem
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  2. #2
    ANGRY MAN 2011 Chief Engine Builder Admiral coFF33's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    compression test
    check for oil on plugs

    is it over heating if you continue to drive it when it goes into this lumpy state?

  3. #3
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    Well the cars not rego'ed so I can't drive it but dosent overheat when sitting like it at idle.
    Check the plugs and they were pretty oily with white/sand tips.
    Cheers
    Steve
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  4. #4
    ANGRY MAN 2011 Chief Engine Builder Admiral coFF33's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    sand?
    wtf

    if the tips of plugs are dogshit white or black as fuck put new plugs in it (BKR6E)
    if any of them are SOAKED in oil
    you may have a blown oil/compression ring in the engine meaning rebuild time

  5. #5
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    Yea I changed the spark plugs just then and it seems to be better. So I drove it down the street and back. But now it isn't making any boost. When its trying to make boost it just runs like it used to. Sorta sounds like it's missing or something??
    Any ideas?
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  6. #6
    "it went up in a jiffy" Conversion King Kedderz's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    Vacc/boost leak? check your intercooler pipes.
    RA23 - Twincharged
    JZZ20 - Daily

  7. #7
    i 8 a p00 Carport Converter rob's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    take coil packs out and see if there are cracks in the stems
    - ma61 + 2jz-gte + v160 + 3.5 torsen

  8. #8
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    I check the coils when I replaced the plugs and there were no cracks. Also just took the air filter off an covered it with my hand and could hear it getting air from anywhere else.
    ????
    Thanks
    Steve
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  9. #9
    Junior Member Too Much Toyota
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    Default Re: 1jz in MA61 running at temp problem

    intercooler & piping - check, must be loose clamp or something's disconnected.
    ------------------------------
    ST185 road barge / MZ11 forest barge / RA65 garage barge

  10. #10
    ANGRY MAN 2011 Chief Engine Builder Admiral coFF33's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    ^^ yep try this
    and when you checked the coilpacks did you actually TAKE the rubber blue bootie boots off and see if there was cracks there leading up the "shaft" of it

  11. #11
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    Nah I didn't but I will if changing the fuel pump dosent fix it which is what I'm doing tomorrow
    Thanks heaps for the help so far guys.
    Steve
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  12. #12
    Junior Member Automotive Encyclopaedia
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    Default Re: 1jz in MA61 running at temp problem

    Quote Originally Posted by Sideways Supraboy View Post
    ...changing the fuel pump...
    Why, just because you can, a WAG(wild ass guess)?
    Are there symptoms that point in that direction?
    'I've scrapped better.' John stated when asked about the car by the guy with the silver tipped cowboy boots!

  13. #13
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    Yea well I have one that I know works fine. And when I took the current one out it looked like it had been tampered with so I changed to the good one and haven't been able to check if it's fixes anything yet. But fingers crossed
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

  14. #14
    Not in the diner Alf! Conversion King RyleyMA61's Avatar
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    Default Re: 1jz in MA61 running at temp problem

    mine was doing a very similar thing and it was crack ic pipe and a loose boost controller hose. hope ya get it sorted mate

  15. #15
    Forum Member Grease Monkey
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    Default Re: 1jz in MA61 running at temp problem

    Ryley that may be my problem. I'm using the same intercooler out of the car which had the front on accident. Maybe it's got a crack somewhere I can't see. Any tricks to find out if there are any holes?
    Cheers for the help.
    Steve
    MKII Supra with 1JZ and R154 = win
    Currently building another 1jz powered MA61

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