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  1. J

    6 inch waves launch my boat?

    Hello. I have a 1971 sea swirl with a mercruiser 140. It is a tri hull. Runs great. Except one thing. When starting to go I would say three quarter throttle the front of my boat starts to bounce and if there is wake in my line of travel it launches the boat totally out of the water. Is this...
  2. J

    please dont laugh

    What are bellows
  3. J

    spark plug help?

    Anyone know what kind of plugs should be in a 1971 sea swirl tri hull. It has 140 mercruiser with 2 barrell Rochester carb. Has champion plugs now.
  4. J

    ballast resister vs. resister wire

    Got a 1971 sea swirl with a mercruiser 140. Rewired almost everything. My post before ("orange spark while running"). Now am to the ignition coil. On it it says use with external resister. Now currently I have resister wire but think that it may be part of the problem. Am I ok using a sorerate...
  5. J

    seloc or clymer or ?

    Need to get a manual. What should I get for 1971 sea swirl with a mercruiser 140 sterndrive. What brand do you guys suggest
  6. J

    wiring harness on 1971 sea swirl mercruiser 140

    Looked at all wiring today because have been having ignition issues. Found cracked wires coming from alternator to power and alt to coil and even an exposed corroded soto on red wire from alt. Found a lot of cracks on a lot of different wires under dash to. Including ignition wires which were...
  7. J

    orange spark when running? is that normal?

    140 mercruiser from 1971 with two barrell carb. Runs good at idle and will open up all the way. Buy there is a slight un rythmic miss. Pulled off a spark plug boot and put another spark plug in it and started motor. Did this on all 4 plugs. Looks like an orange spark to me. Even after a new...
  8. J

    about to give up. still slight miss

    Ok. I have a 1973 sea swirl. Sterndrive. 140 mercruiser. Missing just barely. Carb was rebuilt. Compression test went great. So I know its not fuel or integrity of motor. Convinced it is electrical. Last night I put an inline spark tester on each plug and it flashed consistently. However when...
  9. J

    2 barrell Rochester question

    Recently rebuilt carb on a 1973 sea swirl with a 140 mercruiser sterndrive stuck to it. That went very well but have a lingering question. Not to sure about the two spring loaded needle screws at bottom of carb. Looks like since there was one on each barrell that each screw would control the...
  10. J

    exhaust part missing? is it important ?

    Was looking for a leak where water pours in the boat down by the bottom of the transom. Well to get to it I removed the top piece of rubber from the elbow on the top of exhaust. Then I looked down it. Saw a what looks to be a flat bracket attached that rattles around and looks like it has no...
  11. J

    could slight engine miss be related to a tach that dont work?

    Have a 1972 seaswirl with 140 mercruiser. Did compression check and replaced cap rotor plugs wires and new fuel tank and lines and rebuilt carb to. Still has very slight miss and read somewhere that it could possibly be related to the tachometer or rpm gauge. That is the only gauge on the boat...
  12. J

    help removing outdrive special tools needed?

    I have a 1972. Sea swirl with a mercruiser 140 sterndrive. I am trying to remove the out drive to find where some water is leaking into boat when motor is up. I tried to loosen the six big bolts that looked like it held it on but when loosened nothing budges at all. thought it would just slide...
  13. J

    mercruiser 140 slight miss and puff of black smoke when punched

    Don't want a mechanic touchin her manifold? Great site. Read a lot of posts. Here goes. I got a mercruiser 140 from 1971. GM inline 4. has a 2 barrell Rochester carb. after I bought it I noticed rust in gas tank. Replaced tank and all fuel lines and rebuilt carb back to spec. That was pretty...
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