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    Ballast Resistor or not?

    Mercruiser 6cyl in-line 165HP 1970's-80's I have checked all my spark plugs for spark and have been able to start my engine for the first time, very short as cooling was not active yet. Afterwards I did some electrical work and discovered that on the positive side of the coil I only have...
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    Size Jet's? Reference table

    Hi, Thanks to the input of the forum. My order for parts at Mike's is almost ready. :) I checked the 2 jets on my carb and I seem to read "49" (see picture). Or do I read this wrong? No info on the history of this carb. Does this make sense? I thought it should be closer to 60. But only based...
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    Carb Needle condition / function

    Hi, I did quite some efforts into understanding how a carb works. But the 2 barrel concept didn’t ring a bell. I thought it was purely related to overall capacity of the carb versus engine air flow. But now it’s clear that the 2 barrels serve 2 DIFFERENT sets of cylinders. 👍 And of course 2 idle...
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    Carb Needle condition / function

    I checked the float (was rebuild) and cleaned the needle that stops flow to the bowl. Also based on visual inspection, needle looked fine. But is there a simple way to check if I really closes the fuel flow in the right manner?
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    Carb Needle condition / function

    Ok, thanks for the reply. As I guessed, the needles are ruined. And I found some spares at Mikes already 👍. Lucky the bores are not raised, so I guess this is still ok.
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    Carb Needle condition / function

    Hi, just started with the inspection of my carb GM 2 Jet 7040110. I'm not an expert in carbs but the 2 "Needles" look weird to me. See Picture. Questions: 1. Is this a normal condition of the needle? 2. Are the left and right needle supposed to be similar or different? 3. Can someone explain if...
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    Crack in 6cyl inline 1970 165HP, next steps?

    Thanks for the feedback. It was indeed a USA boat but somehow got shipped to Europe. Finding a block like this here won’t be easy and probably expensive. I will go with first testing the 10-15psi on the block. @scott: also thanks for the input but the boat as such is really not worth it...
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    Crack in 6cyl inline 1970 165HP, next steps?

    Hi, Working on a project boat with main focus now on the engine. To be clear: no information available on previous conditions, maintenance, ... And I have not started the engine before. Was stated that problem was a fuel-pump and it "should" run. After advice from Scott I double checked for...
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    What is this on my 6cyl in line 165HP?

    Thanks for the picture!!! Makes it more clear now. And I presume I would not have detected this with a compression test?
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    What is this on my 6cyl in line 165HP?

    Thanks Scott. Will see. Could be that the rebuild has ended prematurely....
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    5 Amp current in stand by. Normal?

    OK. So probably the coil and alternator. No electric choke.
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    What is this on my 6cyl in line 165HP?

    Will try to have a look the coming days.... Could also be located behind the exhaust manifold I guess?
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    What is this on my 6cyl in line 165HP?

    Oh... and probably previous owner didn't do..... Bad news...
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    What is this on my 6cyl in line 165HP?

  15. Y

    What is this on my 6cyl in line 165HP?

    .... Was just looking at the same thing when I posted the picture.... You think this could be a crack in the engine block? Meaning "total-loss"?
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    What is this on my 6cyl in line 165HP?

    You mean a oil-drain? Because I can easily reach the oil-plug in the bottom pan. Meaning I would not need this then?
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    5 Amp current in stand by. Normal?

    Slickcraft with GM inboard 6cyl in-line 165HP. No other accessories besides a inboard engine and the sterndrive. Yesterday I discovered that before even crancking my engine (doesn't run yet) it draws already 5A from the battery. This seems to be very high in my opinion. I will try to isolate...
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    What is this on my 6cyl in line 165HP?

    Hi, been working on the engine for a while. Soon a compression test. But then I saw this part on the side of the block. Does anyone have an idea what this is used for? And should I "adjust" something? Thx Yorick
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    What type sterndrive

    Hi, Yesterday I picked up the boat and first step was to remove the Mercruiser sterndrive. Engine is a Mercruiser 165HP. Gimbal bearing still moving smooth. Gimbal bellow in good condition. U-joint is moving smoothly and no play issues. BUT: quite some oil in the bellow. I suppose that there...
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    Rebuild old mechanical Fuel pump or go for Electric Fuel pump

    Hi and thanks! To be honest I need to see for myself more in detail the issue as such. Saturday I can pick up the boat. Was just trying to get an opinion on the mechanical pump versus electric as I saw in some cases people just changed to an electric pump. But anyhow, thanks for the reply and...
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