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Thread: 186 Engine problem NEED HELP

  1. #41
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    I found it very informative too Schmierer Well... it's a couple of months on from my last post on this thread. Been driving the 186 around (got a Detroit locker for the back and LSD for the front! goes great). That radiator I 'found' leaks as well but only very very slowly so it's still in there. but I'm pretty sure that I need a new one. A couple of the cores have been sealed off ie there is no cooling effect from those cores. correct me if I'm wrong but that would reduce my cooling ability pretty badly? she likes to get hot when you drive in 2nd and 3rd constantly, for eg, when climbing a range, or driving steadily down a dirt track. And when I went out on the weekend, was trying to keep up with a Rodeo down the highway so i was sitting on 90km/hr for a while and the temp started to climb as well. (no overdrive). I have a new/ready to be fixed gearbox on the way! so I will be building that over the coming months. Should be very exciting and informative since it's my first time even pulling a gearbox apart. I have a 2.25 engine on the way as well, it needs lots of love too. that will be project for the future.

  2. #42
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    cool. I just got a 186 engine and it has a water issue so i have been trying to read as much as i can about them. I know very little about mechanics too. The gearbox's in them are quite simple. No doubt you will get a bit confused and do a few stuff ups but you get there in the end.2.25 petrol or diesel ?

  3. #43
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    I try not to plan on stuffing things up Got a diesel. It's the only way to go

  4. #44
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    i had a 2.25l diesel i was very happy with the fuel economy and i thought the power was not to bad

  5. #45
    Chris72 Guest
    Quote Originally Posted by debruiser View Post
    Ok Got my hands on a compression tester! did a bit of a test.

    Got the following results.
    Cyl 1 - 120psi (with a dash of oil added got 160psi)
    Cyl 2 - 140psi (oil 170psi)
    Cyl 3 - 120 psi (oil 170psi)
    Cyl 4 - 150 psi (oil 190psi)
    Cyl 5 - 140psi (oil 170 psi)
    Cyl 6 - 130 psi (oil 170 psi)

    They are all well and good but what does it mean? What should I expect from a 186???
    Was that a cold motor test or hot motor test ?
    Cheers Chris

  6. #46
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    Chris 72,

    That's cold motor test.

  7. #47
    Chris72 Guest
    on a hot motor test you will get higher readings as everything heats up it expands, I would say the rings should be ok with those s numbers on a cold test. as for the valves with years of running super fuel there is probably a lot of lead residue stuck in the carbon, personally I would still add some lead replacement additive.
    Cheers Chris

  8. #48
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    Question Dizzy problems

    Going to continue this thread rather than start a new one.

    Just got me a new Electronic dizzy for my 186! YAY! no more points etc.

    Problem is that I seem to be more inept at fixing these things than i thought....

    Stuck it in and started it up no problems! BUT then I tried to lift the revs gently... would only rev to about 1500rpm. then would coff out. If I just fed it heaps then it would backfire.

    So I pulled the top back of the dizzy and made sure I had TDC correct (the long line on the thingo needs to line up with the timing mark on the crank pully gadget, right?) So then I stuck it back together, now it runs rough, tried fiddling with the timing a bit but no good! What did I do wrong and how do I fix it?????

    Anyone live in Mackay and would like to come and point and give instructions so I can fix it??? I'm stuck

  9. #49
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    Come on guys... someone must have some idea.... I'm stuck.

  10. #50
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    1. Are you using a compatible electronic coil (correct) or the old points coil?
    2. Are you using the original coil +ve wire or have you run a new decent sized wire from the ignition switch (correct)?
    3. Have you double/triple checked the timing order? 1-5-3-6-2-4 clockwise.
    4. Have you checked the dissy rotor is in the correct position with regards to the contacts in the cap? These dissies fire when the pointy star rotor lines up its teeth with the teeth on the pickup around it. The rotor must overlap the cap contact under no vacuum and full vacuum conditions. Mark the position of no.1 lead position accurately on the dissy base so you can see it with the cap off. I've seen rough handling shear the locating lug out of the rotor.
    5. Have you closely inspected ALL the lead contact clips for burning and damage?
    6. Have you got a timing light to check the timing? Under $40 on ebay you know.
    7. Have you got the correct cap and rotor, genuine and spotlessly clean, not chinese copy rubbish?
    8. Are the screws holding the ignition module to the dissy base clean and tight?
    9. Is there heat sink paste under the module?
    10.Are the wires to the module loose?

    That should keep you going for a few minutes...

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