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  1. K

    89 3.7 merc bow rider / barley idles

    Looking for some guidance diesel one of the repairs that just aggravate me because it could be so many different things. So Saturday I took the boat out it was OK in the beginning I noticed a little bit of skipping but it seem to clear itself out and everything went well. Today I took the boat...
  2. K

    Re-carpeting 18.5 Bowrider Need advice

    I have a 1989. 18.5 regal bowrider and I plan on putting in new carpeting. Basically the carpeting is original. The water is seeping through, causing two soft spots. I guess my question is, what is the best way? to carpet a boat I'm buying 8 1/2 foot wide carpeting. So obviously it's not gonna...
  3. K

    Fuel gauge issues

    Can some one tell me what these connection do? 1989 Regal Bow rider 3.7 I'm trying to figure out if I have a ground issue or a gauge issue basically what's going on now is I bought a fuel sending unit the new type that has the sending unit slide up and down this metal post I'll call it. No...
  4. K

    Temperature gauge needle when cold

    Temperature gauge needle when cold is well below the C. This indicates inaccurate read Because the starting point is way too under the C. I’m gonna attach a picture because after the boat runs for about 4 to 5 minutes it finally reaches the first notch next to the C. I’m just concerned because I...
  5. K

    Prop Pitch questions

    1989 regal 18.5 Medallion bowrider 3.7LX Merc I think it's the four 470 engine, the serial is 0C520320 Spare prop question. I have a great deal for $40 on a brand-new prop never used and I plan on buying it as a spare but I want to make sure it'll be OK. Now I do know that depending on the...
  6. K

    Understanding Merc Manifolds 3.7

    Trying to understand exhaust elbows the top picture is going to show my current exhaust. Today I picked up a spare elbow and I'm wondering as far as the grooves are concerned and the gaskets, why do they not match up? For instance a gasket will have three slots but the manifold will have four...
  7. K

    Antifreeze low after sitting 2 week

    So I went to winterize my boat and I noticed as in the past the antifreeze was a little low and this has been a summertime issue after replacing the head gasket exhaust gasket the intake gasket and exhaust riser gasket . Every time I start up the boat you can clearly see the antifreeze shooting...
  8. K

    Possible oil leak near fuel pump bolt

    I have an 89 MerCruiser 3.7 that sat for a long time I’ve put quite a few posts up here to bring them back to life. So I decided to change the fuel pump thinking that diaphragm is got to be worn out why not. Well when I was installing the new one obviously. I had tighten the bolts and when I...
  9. K

    Cleaning products recommendation

    Can anyone recommend a good cleaner ( grease stains) I was looking into the vinyl spray paint for the ones I cannot remove.
  10. K

    Steering issue left turns only

    1989 regal medallion bow rider 3.7 merc cruser alpha 1 So yesterday while tubing all of a sudden I was not able to take sharp right turns..... I can take what I call a slow right turn.. I have looked for obstruction like a clamp or hose. I have looked for any obstruction inside and im not seeing...
  11. K

    Fuel sending unit help

    I have a 89 regal Medallion 3.7 2 bbl Can someone tell me what kind of fuel sending unit this is ... Looking to buy a replacement.
  12. K

    Alpha 1 exhaust bellows help

    Can someone tell me what kind of bellow I have? I noticed my exhaust is not exiting the prop area. Look at my bellows why is it so different ?
  13. K

    Loud knock in full throttle

    So today I noticed on two separate occasions when I go full throttle after about 20 seconds there’s this knocking sound now I’m not talking about an engine knock it sounds very metallic he somethings loose somethings slipping maybe how do I find the source of the problem. What do I start looking...
  14. K

    Electric fuel pump and oil pressure switch

    89 3.7 4cyl Merc 2bbl So because of vapor lock issues I've been having I'm planning on switching over to a small electric fuel pump and an oil pressure switch that turns the pump on and off from what I've been told this is necessary. My plan is to purchase one of those small electric...
  15. K

    Puffing sound from rear of engine

    In my previous post I had mentioned that I replaced the head gasket on my boat and I will guarantee that this has something to do with it and it may have had something to do with my boat not starting after running it for about 2 hours vapor lock. Now I really haven't had them desktop too needed...
  16. K

    Stuck Rochester two barrel linkage

    I’m hoping I can get some guidance from someone else there that’s been through this. I recently got a carburetor and I installed it and I noticed that when I tighten up all four nuts the return action sticks if I loosen just one of the nutd in the corner closest to the Linkage it snaps forward...
  17. K

    Crack and cavity on lower unit

    So when I purchased this boat I guess there was some water in the lower unit it froze and created a crack. I put some of that putty steal stuff hoping it would keep everything intact but last week it all came out. Now as a temp fix I’m going to try to put in some JB Weld and fill this hole so...
  18. K

    Flapper valve replacement wisdom needed /89 3,7 merc

    Looking for some guidance on a exhaust flapper valve replacement . I'm having a very very difficult time sliding this boot off the elbow that will give me access to the flapper. Now part of me wanted to cut it with a razor blade and just replace it with a new boot that I have but I'm thinking...
  19. K

    Dies when throttling up from idle after warm up/ 89 merc 3.7 2bbl

    So I'm trying to figure out why my boat run so well for the first 45 minutes of operation and then if I turn off the boat to anchor somewhere restarting it is almost impossible unless if I don't let it sit for more than 30 minutes. if I want to start up before that I have to use starter fluid...
  20. K

    Lifters got loose pushrods came off while boating

    89 Merc 3.7 So after redoing my top end place in the head gasket I finally got the boat running nicely. After about an hour and a half I noticed a ticking noise a little sputtering and then the engine died. On a hunch when I got home after seeing it run really rough I said let me take the...
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