Pulled her, have a project to work on….

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  • Pat310Pat310 Member Posts: 606 ✭✭✭
    Grew up on water front in Queens NY and the nor’easters were almost always as bad as the hurricanes especially when it came to tidal flooding
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  • grouch0jrgrouch0jr Member Posts: 252 ✭✭✭
    I think we are expecting 4-5 feet of storm surge.
    2006 342EC - Twin Mercruiser 350 MAG MPI Horizons
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    I went to take her out for a spin, first time since I got everything back together. She idled perfect out to the bay. I went to give her throttle and port engine (engine I worked on) couldn’t get past 3000 RPM and was popping. I went back to the dock and checked all the vacuum lines and plug wires, all was good. I also check where the distributor rotor was at TDC and it was right on the number 1 wire position. I put everything back and unfortunately while tightening down the cap a tab broke off the distributor. I barely put any force on it and it broke. I’m always cautious of this happening also! Luckily the cap was still able to go on snug. I’ll have to replace it. I went out again to check and still the same issue. I’m thinking I messed something up when I set the valve clearances, seems like they could be too tight. I’m pretty busy this weekend but hopefully beginning of next week I’ll pull the valve covers off and readjust the valves.


    2008 330EC
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    edited October 2
    I’m 99% certain that I adjusted the valves too tight. I tightened the pushrods with a little drag for zero lash and tightened the nut 1 full turn. It should be zero drag on the push rods for zero lash and then 3/4 turn on the nut for preload. I made a cheat sheet to follow. They say 1 full turn is by the book for preload but 3/4 is better for running at higher RPM’s.

    The valves that can be adjusted when #1 and #6 are at TDC are listed at the top.




    2008 330EC
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  • grouch0jrgrouch0jr Member Posts: 252 ✭✭✭
    I'm really learning a lot from your troubleshooting posts. Thanks and keep it coming! Also good luck.
    2006 342EC - Twin Mercruiser 350 MAG MPI Horizons
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  • captkevincaptkevin Member Posts: 582 ✭✭✭
    Hopefully that does the trick. Didn't realize  you were going to be able to take it out for test run this years
    2004 232
    2021 Yamaha Fx svho
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    edited October 3
    Thank you! 👍🏻⚓️
    2008 330EC
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    edited October 6
    I don’t know why she’s being so difficult this time around!! She’s being a bit@h to me!! 😂

    I readjusted the valves today. It’s difficult to get the valve covers off and on when the engine is together but it’s doable. Ran her at the dock and still had the same issue, sputtering and popping at 3k RPM’s. I looked everything over intensely and found nothing obvious. I did see a couple of fuel injector clips not seated right, I fixed them. A last ditch effort, I reset TDC and pulled the distributor and inserted one tooth clockwise from what I originally had. She started right up, I throttled up and no sputtering and she went past 3k!!!! I untied her and went out to the bay. Throttled up and she took off, no popping! All of a sudden an alarm sounded, I lost oil pressure on the port engine! But the engine sounded fine. Pulled back and she was idling perfect. I brought the throttle up and she started popping and wanted to stall. I limped back to the dock on the starboard engine. Thinking the worst, I looked over everything again and see nothing. I started the engine and it sounds normal but still no oil pressure. Give it throttle and it starts popping and stalls. Again, thinking the worst and about to shop for a new engine. I’m thinking, the engine sounds fine but no oil pressure. I jumped back into the engine compartment and take a look at the distributor. It wasn’t secured down! It popped up out of the intake! I was like WTF! It’s hard to see with everything back together but when I installed the distributor clamp, I didn’t slide it forward to secure the base of the distributor. You can see it popped up in the last pic. Since the distributor runs the oil pump, with it popped out is why I didn’t see oil pressure. It needs to be seated all the way to seal a oil galley to provide full oil pressure. Luckily the oil pump must’ve provided some oil pressure since the engine sounded fine but not fully getting the the pressure it needs. Unfortunately i ran out of time but will be back tomorrow! And I will beat her, LoL!!





    2008 330EC
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    I did order a good used distributor with good tabs off of eBay. I should have it in a couple days. I can’t wait till this issue is behind me!⚓️
    2008 330EC
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    It was nice to know that the oil pressure alarm works 😂. But I did notice that there’s no alarm when I have the starboard engine off with the port engine running. That didn’t seem normal to me. Shouldn’t the alarm sound even though the starboard ignition was off? Or do you have to keep both ignition switches on even with one engine running?
    2008 330EC
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  • rasburyrasbury Member Posts: 8,986 ✭✭✭✭✭
    edited October 6
    That's interesting @aero3113..I never thought about what you're seeing but each motor i assume has its own pcm and various engine controls but how are they separated so you know what motor has issues? That kind of sounds like what you're dealing with if I'm reading right and not to many bourbons...I'm assuming your electronics would separate them for you. It sounds like one motor feeds the other to then produce warnings. Odd...
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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    edited October 6
    Yeah, something isn’t right. Both engines should be isolated and independent from each other. I used Ai to see if it could help me. Once I get everything sorted I’ll look into it. 



    2008 330EC
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  • Dream_InnDream_Inn Member, Moderator Posts: 7,952 mod
    Aero that is great news after all that work you did!!  Congrats!  Should feel really great after doing it yourself.

    Dream 'Inn III -- 2008 400 Express

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  • aero3113aero3113 Member Posts: 9,943 ✭✭✭✭✭
    Thanks @Dream_Inn ! 
    Definitely a feeling of accomplishment.
    Im glad it all worked out. I’m actually excited to pull the starboard intake to see if there’s any corrosion like the port side. I’m scheduled to be hauled out on the 14th. Planning on doing it when she’s out of the water.
    2008 330EC
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  • captkevincaptkevin Member Posts: 582 ✭✭✭
    Congrats on yet another job well done. Your work is nothing short of amazing 
    2004 232
    2021 Yamaha Fx svho
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