Search results

  1. H

    3.0L GM OMC Problems

    So I finally got this engine back together. It seems to run fine in neutral. I got it out to the lake to take it for a test drive and under load I can't get it above 1000rpm. I get a backfire out the carburetor and the engine slowly dies. I'm thinking... 1. Check the timing 2. Check the point...
  2. H

    1980 GM 3.0L Valve Adjustment

    I have a 1980 gm 3.0L (181) CID, that I need to adjust the rock arms on. The manual I have seems to be wrong about the arrangement of the valves. It says the arrangement is cylinder 1 (Intake - Exhaust) cylinder 2 (Exhaust - Intake) cylinder 3 (Intake - Exhaust) cylinder 4 (Exhaust - Intake)...
  3. H

    1980 OMC Stringer 400 / 140

    Hello, Recently I acquired a 1980 OMC Stringer 400 / 140. The engine needs a new set of rod bearings. The lower unit however, is in perfect working order, well taken care of and in working order. I cannot find an original service manual, I was wondering if the Seloc manual...
Top