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1992 sambar need help.

Discussion in 'Subaru Sambar' started by jason mcbeth, Apr 17, 2019.

  1. jason mcbeth

    jason mcbeth Member

    Ok i have recently purchased a pair of 1992 sambar's one motor out disasembled. I have read the posts for days.First thing is i can not get this thing to fire.I set timing marks as stated on crank and cam.kept looking for the "T" mark or plug to view such on flywheel.came to the conclusion, mine is on serpentine pulley.when i first tore in the belt tensioner was missing the spring.I have set the timing several times.last night i found that the fuel line from fuel pump was actually going to return.It popped and backfired a couple times through vacuum lines.I then found plug wires on dist cap wrong.now nothing.Im hoping someone can help me figure out a baseline on where to start.Also the compression test only showed around 135-100 psi across the cylinders.the firing order found here was 4321 flywheel to timing belt.
     
  2. jason mcbeth

    jason mcbeth Member

    would like to also note that after correcting fuel lines electric fuel pump sounded as if it built up...aka came under a load.now it does not.I have not checked plugs since.Are these as finicky as snowmobiles?the plugs are NGK.if they foul are they done?
     
  3. Maximal

    Maximal Member

    when you turn the key onto ignition on mode (not cranking the engine) you should hear the fuel pump run/prime for about 3 seconds, can you hear it? and are you getting spark off of the spark plug wires?
     
  4. jason mcbeth

    jason mcbeth Member

    yes pump runs, and keeps running.I also have spark when turning over.
     
  5. Maximal

    Maximal Member

    huh, if youre getting fuel and spark and youre sure the timing is correct i would maybe pull the plugs and check them, takes 5 min to remove them
     
  6. jason mcbeth

    jason mcbeth Member

    Update I purchased a gasket set and used the spare head as it had better valves and they lapped in.With new valve seals and head gasket my compression tester is broke or I have major problems.It is now showing like 75-80 psi on 3 cylinders and 125 on 4th.Can these engines be bored?Trying to decide if im gonna pull it and try new rings.Any advice would be greatly appreciated.Also best place to find piston rings and such?Best i found was $137 for a set.
     
  7. jason mcbeth

    jason mcbeth Member

    Ok i barrowed a different compression tester and the readings are as follows 4=80psi,3=145psi,2=120psi,1=130psi.I think that should be enough to run but not positive.Hoping i can get it to start and the rings will seat for better compression.This engine has sat for atleast 4-5 years.The bore looked shiny and chrome like when i had the head off.
     
  8. David Ogden

    David Ogden Member

    I think you may have the firing order wrong, it is 1342 from the timing belt end. #1 on the cap is straight up with the centerline of the engine (as if the engine was standing straight up), then #3 90 degrees CCW (almost straight up as the engine is , #4 straight down with the centerline, #2 down as the engine lays.
     
  9. jason mcbeth

    jason mcbeth Member

    oh damn, so 1992 subaru sambar EN07.I have firing order as follows 4321 flywheel to timing belt.
     
    Last edited: May 23, 2019
  10. jason mcbeth

    jason mcbeth Member

    The cap has markings for wires.figure that is safe so long as i have #1 on #1.
     
  11. David Ogden

    David Ogden Member

    Well that is wrong plain and simple.
     
  12. Maximal

    Maximal Member

    David is correct, firing order is 1 3 4 2. Cylinders are "flywheel side 4 3 2 1 Timing belt side"
     
  13. jason mcbeth

    jason mcbeth Member

    ok im hoping this is the problem.To clarify, sitting behind the truck flywheel and trans on my left-timing belt alternator etc on my right.The cylinders from left to right are 4321 correct?Now with the timing marks aligned on cam ans crank number one on distributor seems to be around 2:00 which is right inline w/ cam/crank top to bottom.
     
  14. jason mcbeth

    jason mcbeth Member

    Ok thank you both,just came in to check boards again real quick.Got what seems like all vacuum lines back on and coolant hoses.Gonna go out and see if i get it to fire.
     
  15. Maximal

    Maximal Member

    [​IMG]

    basically copy this lol
     
  16. jason mcbeth

    jason mcbeth Member

    Yes i was gonna do same thing,take a picture.That looks like the way i have it.Tried to start it.Used a remote starter switch with key on.All four plugs have spark but it didnt fire.Pulled the plugs and where dry as a bone.Wonder if the carb got messed up when whoever had it before me had pressure on spot where return to tank was and vice versa?Gonna search boards for no fuel scenario.Looks like i might be able to get to the bowl by removing 6 or less screws holding the top plate on and inlet/outlet lines.
     
  17. Maximal

    Maximal Member

    fuel pump make noise with ignition on ACC no cranking? should be able to hear it make a whirring noise for about 4 seconds with ignition on. can also test for power at the fuel pump, carbureted EN07 have a small external pump easy to access
     
  18. jason mcbeth

    jason mcbeth Member

    yes i hear it running and when i take fuel line off it shoots out.kinda wondering if float needle is stuck?
     
  19. Jigs-n-fixtures

    Jigs-n-fixtures Active Member

    The compression should never vary more than five percent between cylinders on any internal combustion engine.

    If you have access to a compressor, build or buy, a leak down tester, and track down where your issue is. There are instructions on the web, or you can buy one through Amazon for less than $50. https://www.amazon.com/Milton-S-125...efix=Cylinder+leak,aps,686&sr=8-1-spons&psc=1

    You screw it into the spark plug hole, and with that cylinder at TDC. Then you flow air through the cylinder. You can then listen for the air flow. If it is in the inlet passage the inlet valve isn’t sealing. Exhaust same thing. If you hear it in the oil fill port, the rings are bad. If you hear it in the radiator cap, on a drained engine, or see bubbles on full cooling system, it’s the head gasket.

    I knew a guy who used propane, and a propane sniffer to determine where the issue was. But if you try that be sure you’re in a well ventilated area, free of ignition sources.

    Now I’m wondering if a person could use a different gas, and a gas detector, for non combustible gas like CO2, Argon, or even Helium.
     
  20. David Ogden

    David Ogden Member

    But it has enough compression to run and should be ran long enough to warm up completely before the compression can be properly checked. And if it has been sitting for a long time it may take longer for the compression to build back up.
     

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