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  1. Nick_1987 5.7 OMC

    5.7 omc stalling while shifting

    Well I’m back again…. 5.7 omc from 1987. Super clean motor. Runs mint, starts nicely. But it dies when I shift it. I don’t think it’s the switch. If I hold down the esa, the motor just stumbles continuously and does not die. I have a feeling maybe adjustment somewhere needs to be done. Just...
  2. Nick_1987 5.7 OMC

    5.7 omc no thermostat

    I have a 5.7 omc 1987. My engine never heats up and is always under 110 degrees. Could I have a missing thermostat and is that bad ?
  3. Nick_1987 5.7 OMC

    5.7 omc carb leak

    Hey all back again, sadly…. So I have a 5.7 omc from 1987-89. Just did a carb clean on the motor and everything is fine in the mechanical side of things but I think I may have a electrical issue. While running a few days ago, the motor was stubbling out of the blue and then back to normal after...
  4. Nick_1987 5.7 OMC

    1987 Rochester quadrajet

    Hello! I’ve owned this boat for a little over 2 years now, first time I’ve attacked a carb clean on this quadra jet. Completed it in about 2 hours. Carb looks very clean. I just have one question. In the video the guy had 4 brass pipe fittings for the vacuum. I had only the 2 outside for the...
  5. Nick_1987 5.7 OMC

    1996 4 stroke Johnson 15hp

    Hey everyone, just picked up this motor for a awesome deal. Now, I’m wondering if this is a susuki Block because of the partnership between susuki and Johnson when they wanted to build 4 strokes. Also some tips and tricks with the motor would be awesome! Motor works great, compression of 160 on...
  6. Nick_1987 5.7 OMC

    1987 5.7 omc outdrive

    Hey guys, need some help here. I was coming in from my last trip on the lake for the season and my outdrive blew out if no where. Not sure what happened but **** happens. My question is can I mix and match my 5.7 omc engine with other outdrive? Or do I have to replace it with another omc...
  7. Nick_1987 5.7 OMC

    5.7 1987 OMC shuts off at Low RPM

    Hello everybody, good morning or good night, whenever your reading this. I have a 26” Bayliner ciera with a 5.7 omc 1987. So the issue is that the boat runs nice and smooth at high rpm ( 4500) nice spot for the engine. But today when I was going back Into the marina, I was getting ready to dock...
  8. Nick_1987 5.7 OMC

    1987 5.7 omc

    Hey everyone, just wondering what the RPM should be on my engine while at WOT. It’s a 1987 5.7 omc with a 1.41:1 outdrive. I have a 15 1/2x 15 right now and at 1/2 or 3/4 throttle I think I’m doing 4300rpm and 30mph. I have a stainless steel prop that is 14 1/4 x 21. I want to see if I can swap...
  9. Nick_1987 5.7 OMC

    1989 5.7 OMC engine turns but won’t fire

    Hello, my first time asking a question here on iboats. I have a 1989 5.7 OMC and I was out last night, engine turned on fine, ran perfectly and out of no where while I was coming in to port the engine died. I tried to start it back up, the starter was turning but it won’t fire. I’m not sure what...
  10. Nick_1987 5.7 OMC

    5.7 omc outdrive

    I just got a 1989 Doral Tara and I need to change the gear oil. I looked on YouTube on how to do it and some guys are filling it from the bottom up and some from the middle up. What is correct way, don’t want to have the gears break on me and have to spend 3 grand on a new outdrive cheers Nick
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