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Who likes to problem solve? 2ltr Engine

Discussion in 'Engine & Transmission' started by Happy_Camper, Apr 29, 2015.

  1. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    Okay guys so I've been on and off my project for the last few months. I've brought a 2ltr engine, ran beautifully when I brought it, took it to the vw mechanic to get a few little things done (pushrod seals, mounts, etc) he tested it and said it ran beautifully. Came home with no distributor on, I've installed the engine and put the distributor in. The engine is running rough as anything, very very noisy. Do you think this will just be timing? Or something more sinister??

    Cheers Matt
     
  2. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    why no dissy when arrived home??

    basics first

    check points gapped correct
    check leads correct way around and seated properly
    check timing.
    pull the dissy and check its in the slot to correct side if the above doesn't appear to give correct timing.

    my bet is lead around wrong way or non tight connection. check wires are firmly screwed into plug connectors
    accounts for the knocking as well as will be firing on cylinder at wrong time
     
  3. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    He thought I was going to put an electric one in but I wanted the original one in it.

    The distributor I've got is the one the mechanic tested it with.

    -points gapped, mechanic set these and tested engine with, so should be right but I'll check.
    -leads, well I guess the simple things should be checked first, but surely I can't get that wrong haha.
    -timing, I've never done timing before, how hard is it? I'm always up for a challenge. Could be a bit scary the way it's running haha.

    It is backfiring here and there as well

    Oh yeah and anyone who lives in Coffs/Urunga area and would like to have a listen feel free to pm me:D:D
    Cheers Matt
     
  4. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    Ill put 90% that its leads on wrong places.
    check them first
    do you have a workshop manual.
     
  5. syncro

    syncro Well-Known Member

    Messages:
    10,371
    Location:
    Southern Highlands
    Ill put 90% that its the timing.
     
  6. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    I'll put 90% that one of you's are right haha
     
  7. Mellow Yellow 74

    Mellow Yellow 74 Active Member

    Messages:
    847
    Location:
    Sydney
    I would check points and leads and if they are ok I would remove the dizzy and check you have installed it properly.

    When you replace it look down the hole and check that the slot on the drive mechanism is on the same side as the ridge on the bottom of the dizzy. I managed to install it wrong and it appeared to be engaged but was actually 180 degrees out. The engine started but ran like a dog as you have described.

    When you are sure you have replaced the dizzy correctly, do the static timing with a test lamp before you start it then start it and do the timing with a timing light. I can email you a timing procedure I wrote if you PM me your number email address.
     
    Last edited: Apr 29, 2015
  8. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    $5? :D
     
  9. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    Okay I checked the leads they appear to be in the right order 1432, I've attached a pic but it's pretty crappy. The leads are a bit loose on the spark plugs but how would I fix that?
    image.jpg
     
  10. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    Yep I'll definitely pm you, cheers
     
  11. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    Okay guys, I've done the static timing. She starts up, running extremely rough, then starts to backfiring up drivers carbie, coughing splattering, then a whirling noise then cuts out.

    Just a bit more background information, it's got an electric fuel pump,
    And the mechanic did the pushrod seals which means the valves would've been taken off maybe his adjusted them wrong?

    I don't know what to try next

    UPDATE!
    Took the belt off the alternator, she ran very well for a lot lot longer.
    So seems the alternator was some how causing all the issues.
     
    Last edited: May 2, 2015
  12. syncro

    syncro Well-Known Member

    Messages:
    10,371
    Location:
    Southern Highlands
    Try adjusting the valves.
     
  13. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    What could the alternator have been doing to make it play up so much?
     
  14. syncro

    syncro Well-Known Member

    Messages:
    10,371
    Location:
    Southern Highlands
    I can't really see the alternator being the problem. It may have been a coincidence.

    Backfiring indicates that the engine is firing with a valve open.
     
  15. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    I reattached the belt and it ran like crap again. It's almost like the alternator causes the engine to slow down and then it starts misfiring, I know it's odd but it's like it, a whirling noise is also comes when the alternator is connected.
     
  16. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    basically nothing relevant,
    the engine is struggling to hold idle and the alt is applying extra load.
     
  17. Happy_Camper

    Happy_Camper Active Member

    Messages:
    344
    Location:
    Coffs Harbour
    But the engine idled without the alternator, with only a very slight miss.
     
  18. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    possibly a dry bearing ??
    turn it by hand with belt off and check if its turning freely. Leave the belt off when testing engine till both are sorted but you may need the belt on to assist turning motor to check valves and timing
     
  19. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    strange ?
    how did it perform with a bit of throttle
    knocking . missing ,
     
  20. grumble

    grumble Well-Known Member

    Messages:
    1,384
    Location:
    Taree
    Have you asked your VW mechanic to have a look as he did the work and said it was running great? I know this seems like a stupid question but as an ex mechanic that is what I would expect my customers to do. Another silly question where do those couple of big red wires go that are dangling?
     
    cbus likes this.

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