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Thread: 3.0L engine swap

  1. #451
    Administrator Ron's Avatar
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    +1 (dry first).

    ======
    Before the tester broke, you had
    125 PSI on cylinder 2. Now it's 184 PSI. It would be very odd to actually have a ~50% increase on the same cylinder....
    Try:
    Battery fully charged.
    Throttle and choke fully open!
    All spark plugs removed.
    Record readings for 1st, 2nd, and highest
    compression stroke (after, say, 3 or 4 cycles).
    Reset tester and repeat.
    Move to next cylinder (order doesn't matter).
    Report back.

    If you do a 'wet' test afterwards, make sure you use the same amount of oil each time.



  2. #452
    Not a DeLorean Guru
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  3. #453
    Administrator Ron's Avatar
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    Quote Originally Posted by opethmike View Post
    Hug me, Ron.
    Hug3.jpg

  4. #454
    Owner since 2007 Farrar's Avatar
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    Quote Originally Posted by Ron View Post
    Battery fully charged.
    Throttle and choke fully open!
    All spark plugs removed.
    Record readings for 1st, 2nd, and highest
    compression stroke (after, say, 3 or 4 cycles).
    Reset tester and repeat.
    Move to next cylinder (order doesn't matter).
    Report back.
    Well, that made quite the difference...

    Cylinder 1: 130 PSI
    Cylinder 2: 130 PSI
    Cylinder 3: 130 PSI
    Cylinder 4: 140 PSI
    Cylinder 5: 150 PSI
    Cylinder 6: 150 PSI

    You and Bill agree that I did the test incorrectly the first time. He gave me instructions similar to yours. I'm glad I followed them.

    No oil on hand, so I haven't done a "wet" test yet.
    DeLorean status: It's complicated.

  5. #455
    Administrator Ron's Avatar
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    Quote Originally Posted by Farrar View Post
    No oil on hand, so I haven't done a "wet" test yet.
    With those readings, I'd say it would be a waste of time. It wouldn't reveal anything related to a dead miss anyway...

    You might try pulling the plug wires one at a time and listening for one that does not change the engine's sound or RPM...

  6. #456
    Owner since 2007 Farrar's Avatar
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    Quote Originally Posted by Ron View Post
    With those readings, I'd say it would be a waste of time. It wouldn't reveal anything related to a dead miss anyway...

    You might try pulling the plug wires one at a time and listening for one that does not change the engine's sound or RPM...
    I can do that next. However, I noticed something troubling ... The HVAC/Brake vacuum hose was on very tight, so when I went to yank it off and attach a vacuum gauge (spark plugs were black so I thought I'd adjust idle mixture), it came off violently. Not only did I knock three of the plug wires off of the cap, but I saw the cap move a little bit. My fault: I didn't tighten the distributor enough. But now the timing is sure to be off. So I have to look up timing procedure and make sure it's timed properly before I go any further. One step forward, two steps back.
    DeLorean status: It's complicated.

  7. #457
    TGTF (Too Greek to Function) AugustneverEnds's Avatar
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  8. #458
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    Quote Originally Posted by AugustneverEnds View Post
    Whoever said it's the journey that counts and not the destination did not own a DMC-12.

    Just think about all the hours and hours of fun these cars give us....and its never the same thing..so it keeps things interesting.
    Rob Depew
    Tacoma, Wa
    '81 DeLorean 4877 Grey, Auto, 4 wheels
    The Ressurection of 4877......
    Now Accepting Donations to get her back on the road

  9. #459
    TGTF (Too Greek to Function) AugustneverEnds's Avatar
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    Quote Originally Posted by Lwanmtr View Post
    Just think about all the hours and hours of fun these cars give us....and its never the same thing..so it keeps things interesting.
    You got that right. Honestly thought I get more satisfaction working on this car than any other I have laid hands on. Not totally sure what it is but once you're hooked it's hard to go back to cars without shiny unpainted finishes and doors that make you feel as giddy as a six year old.
    Nick A.
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    1988 BMW 325iS
    1982 DeLorean DMC-12

  10. #460
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    Doors that on occasion will try to give you concussions when you stand up after crawling inside for an hour to put in a screw that the engineers figured no one would ever wanna remove that screw....lol
    Rob Depew
    Tacoma, Wa
    '81 DeLorean 4877 Grey, Auto, 4 wheels
    The Ressurection of 4877......
    Now Accepting Donations to get her back on the road

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