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  1. J

    winterizing omc 5.8

    Hello all, That time of year has arrived and I again am going to winterize my own four winns 1993 with the omc 5.8. If i remember correctly my block had two drain plugs in it plus two drains on the manifolds. What i can't seem to remember is what type of lube to use in the drive and how much...
  2. J

    1993 omc 5.8 overheat

    Well figures the season couldnt end without one more issue. I have an omc 5.8l 1993 on a Four Winns Vista. At the dock I could leave it running forever and the temperature may go up to 160 at most, even by giving it gas. Once I place it in gear the temp actually starts to go up past 160. I...
  3. J

    OMC alternator replacement

    Hello I have a 1993 Four Winns Vista 245 with a Ford/OMC engine. I believe my alternator is shot since I'm only getting about 10 volts out of it while the engine is running and the batteries are dying easily. The batteries have been replaced last year. Even if I open up the throttle I may get...
  4. J

    OMC clunk?

    Hello I have a 93 Omc 5.8L. Ran the boat great over the weekend. On Monday I pull the boat out of our slip, out of neutral and into drive and I hear a slight clunk. It didn't affect the boat at all. I noticed that this clunk only seems to happen when I have the boat in drive and am moving...
  5. J

    Electrical problem in OMC 5.8

    And the hits keep on coming. I have a 93 Four Winns Vista 245 and have a two battery system in it with new batteries this season. I leave my boat on battery 1 every weekend, come back and its down to like 7 volts or something. I'll switch to all batteries, start the boat up and let it charge...
  6. J

    how to change a fuel filter

    Hello I have an OMC 5.8 and am looking to change my fuel filter now. I have no idea how long the damn thing has been on there but I do know I was using fuel in the boat that sat for well over a year, but since drained my fuel tank. My fuel filter is easily accesible so I can i just remove and...
  7. J

    new water leak

    Hello all. I fixed all problems and followed the recommended posts for my manifolds and risers. I attempted to post the pictures of my manifold and riser for review but it says the file is too large. Anyway after repairing everything I found a new water leak. Water appears to be leaking in...
  8. J

    final overheat question

    I keep trying to ask this question and am brought to different ideas. I have an OMC Cobra 1993 5.8L. I had an overheat problem, did all the trouble shooting and it appears to be running good now with a max temp of maybe 175 (i have a 160 t-stat). My question is since my temp gauge is reading...
  9. J

    exhaust manifold blockage

    Hello all. I was just doing some routine maintenance going through my cooling system and found something unusual. First off I have a 93 OMC Cobra 5.8L. I removed one of the water lines that feeds into my manifold to check for any blockages in the hose or the manifold when I found a solid...
  10. J

    OMC Riser replacement

    I have a 93 Four winns Vista with an omc 5.8. I went through all the trouble shooting for overheat issues and am still running hotter than normal as I cannot touch the risers for long when the engine is running--showing temps around 180 and have a 160 t-stat. It appears the original exhaust...
  11. J

    omc 5.8 riser temp

    thanks to this site I believe I may have resolved my overheating issues. I bought an IR temp gun and ran it to check the temp of the risers since my last overheat burned up an exhaust bellows. My temp gauge was around 160 and the temp on the risers I continuously kept shooting was in the area...
  12. J

    OMC overheat?

    here is a quick question. I have an OMC 5.8 engine with a new water pump and a 160 thermostat. I have been running the engine and it's been running fine right in the area of 160. What temp would be too high for the engine? Is 160 the correct thermostat? The major question is after shutting...
  13. J

    omc 5.8 hard to get on plane

    hello, well the saga continues. I have multiple things to go over hear so please pick and choose whatever information anyone may have. I have a 5.8 Omc Cobra in a 93 four winns Vista 245. I have to give it near full throttle to get up on plane. Full throttle on the boat is about 4500 RPM...
  14. J

    need OMC mechanic

    Hello I am looking to find a certified (if possible) OMC mechanic. I am in the Lake Wallenpaupack area (northeast pa). Any help would be appreciated as not too many people are willing to work on the OMC and those who do are not really sure how to fix them, in the end costing my $$$$. Thanks...
  15. J

    2nd bilge pump

    hello I'm looking to install a 2nd bilge pump, which this one would be automatic. The one I have now works of a switch on the dashboard and after reviewing this board I see a 2nd one is a good thing plus I am a little leary of no automatic pump, especially when leaving it docked. I am not...
  16. J

    wiring new kill switch help

    I have a 93 Four winns vista and need to install a new kill switch. I found out it wasn't working when I looked at the wiring it wasnt even hooked up so who knows if it even works as it doesnt appear so. They seem to be inexpensive so i'm going to install a new one but I cant find anywhere on...
  17. J

    OMC 5.8L 351 Overheating..need help

    I had the drive replaced with a new water pump. The mechanic said he flushed the engine and parts of an old water pump came out. He said he replaced the thermostat but it seems to still be running hotter than normal. I took it out on the lake ran it for about 45 minutes and blew an exhaust...
  18. J

    OMC 5.8L cracked hose/water leak

    Hello, I am new to this board and to boats in general. I have a 1993 Four Winns Vista and just had it serviced where i had a new upper drive installed as the old one was chewed up. After replacing it the mechanic said the engine seemed to be running a little hot so he flushed the engine and...
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