Search results

  1. C

    Over heating 1988 mercruiser 185 4.3

    Okay replaced the check balls completely. Want to change fuel filler neck before taking her on the water to give it a shot. Do any of you know where I can get a fuel filler neck for an 1988 sea ray seville?
  2. C

    Over heating 1988 mercruiser 185 4.3

    Yes. Took them apart reversed the ball and stretched the spring equally fit pretty good.
  3. C

    Over heating 1988 mercruiser 185 4.3

    Okay been a while of sitting here. Muffs are on water comes from a very cold well. Front of head running 167-170. Top thermostat is 129 bottom is 157. Still on the hot side. What else do I need to look at
  4. C

    Over heating 1988 mercruiser 185 4.3

    Been runn8ng for some time gauge reads 150ish thermostat housing reads 157 and holding. The hoses coming from the T with check balls are cold. Maybe they need replaced? I stretched the springs to make them more stiff but they still are not very stiff
  5. C

    Over heating 1988 mercruiser 185 4.3

    I don't see how. It was completely submerged and had continuous was running it. And it's still pumping water through the engine
  6. C

    Over heating 1988 mercruiser 185 4.3

    So far idle for about 10 min.... gauge reads 150 ish. Ir on thermostat housing is 156
  7. C

    Over heating 1988 mercruiser 185 4.3

    Well that's one issue because they are sloppy.headed home now to toy with it
  8. C

    Over heating 1988 mercruiser 185 4.3

    Yea just did that way to ensure the impeller was actually doing its job and not the pressure of the hose... back to muffs to ensure I don't burn up the impeller.
  9. C

    Over heating 1988 mercruiser 185 4.3

    What is the purpose of the check balls? How should they operate?
  10. C

    Over heating 1988 mercruiser 185 4.3

    There are check ball looking things in this T fitting here.
  11. C

    Over heating 1988 mercruiser 185 4.3

    Sorry, top one. Here is actual photos of it
  12. C

    Over heating 1988 mercruiser 185 4.3

    Yes it was overheating prior. Inherited this project was hoping it was just the impeller. I will grab my ir from work tomorrow and report back that the temp is correct. Your diagram is exactly it. The one I posted was just the closest I could find. S/N on the valve cover is B521565.
  13. C

    Over heating 1988 mercruiser 185 4.3

    This is the cooling sytem. I just replaced the thermostat (yes with correct marine one) and impeller. While testing I have it in a bucket that way water is not being shoved by hose. I'm getting plenty of water flow. I opened individual lines while running it and every line is getting water. The...
  14. C

    4.3 mercruiser overheating

    Not yet. I have it to do so if needed. If the hoses on the thermostat have cold water in them wouldn't that indicate the impeller is working? Trying to figure the waters path through the engine. Like I said my book doesn't have the same stuff as what's actually on the engine.
  15. C

    4.3 mercruiser overheating

    Just replaced thermostat in my 1988 4.3 mercruiser. There is cold water going to the thermostat but is still over heating. The hose that is disconnected bottom right in the picture has no water in it. The hose bottom left was full with extreamly hot water......what am I missing? My book doesn't...
Top