Search results

  1. Y

    Best way to test exhaust manifold?

    Hi, Mercruiser 165, 70's 6cyl in-line I want to double check if my exhaust manifold has any crack's inside. On the forum I have seen different approaches. 1. Use the acetone method to see if the level drops (both for intake an exhaust I suppose) 2. Use compressed air (not sure to what PSI it...
  2. Y

    Timing mod: running or not running engine

    Hi, will double check my timing on my mercruiser 165HP 70's. Before I always stopped the engine, loosen the bolt and changed the position of the Delco. Fix the bolt. I was wondering: if I slightly loosen the bolt so I can turn it with some resistance, could I then leave the engine running...
  3. Y

    Main Jet size for carb 7043183?

    Hi, I have been reading the service manual quite in detail and states that for my setup: Mercruiser 165HP 6cyl 70's it should have the carb 7043183. Engine serial nr is 4506302. But I would like to verify if the current installed 2 main jets have the correct size. In the service manual I dont...
  4. Y

    A-Mercruiser I-Drive Unit: pre-load required?

    Hi, Serial nr engine: 4506302. The 165HP 6cyl in-line. Based on the service manual and checking the upper unit of the stern-drive I have the "A-Mercruiser I-Drive Unit", some call it MC1 I think (the unit with the pin on the top of vertical shaft) it has no Pre-load. I need to replace the main...
  5. Y

    Ballast Resistor versus 8-9V on positive Coil

    Hi, Working on my Mercruiser 165 70's. And still doubting the 8-9V towards pos Coil side. In this forum it was clear that during cranking you put full battery voltage to the coil to start but once running it should be around 8-9V to avoid sparking of the points. Point are completely new with...
  6. Y

    Mercruiser 165 6cyl inline dies when boat is in the water

    I narrowed my problem down to a fuel issue. As long as my boat is out of the water the engine runs smooth. Low revs and high revs. All seems fine as far my knowledge goes Once the boat gets in the water (sterndrive submerged) the engine dies due to lack of fuel. When I manually add fuel in the...
  7. Y

    Mercruiser dies after getting on temp

    Hi, Did my first test run on the water today. Engine (mercruiser 165 6 inline from late 70') started fine. After driving in the water for about 10-15min (slow speed) and when the engine was on temperature it suddenly died. After waiting for about 15-30sec I could start it again but runs for...
  8. Y

    Choke valve position cold engine

    Hi, Today I started the engine, mercruiser 165HP from ‘70, for the first time since I bought the boat. Carb has been rebuilt. And still operating the choke manually I did put the choke in full closed position. Pulled the throttle 2x to inject some extra fuel. Engine started almost...
  9. Y

    Rebuild my choke to Electric. What with the "holes"

    Hi, As my old choke was "missing" (the type that uses the exhaust gases) I installed an electric Choke. Of course on the manifold I have the tube that was connected to the old choke. I suppose I can close this off? But I also noticed an additional hole in the manifold below the other one (not...
  10. Y

    Idle setting Mercruiser 165HP

    Hi, Did the rebuild of my carb. On the forum I saw the suggestion to start with 1.5 turns outward for the Idle screws (I have 2 on my carb 7040110). Now my question is: I also have the screw for idle setting (the one linked to the trottle) that sets the "close" position of the 2 valves. How...
  11. Y

    Trim Limit setting. 20deg?

    Hi, Just re-installed my MC1 sterndrive on the boat. The Trim-sensor was just a dummy (also no gauge in the boat). But there was a Trim-limit switch that was "bridged". So would like to put it back as it should. I read somewhere that a 20° - 25° angle is the max you should go while boating (to...
  12. Y

    Slickcraft SS204

    Hi, working on the rebuild of the engine and my Slickcraft SS204. The inside and outside of the boat have received some "repair", so I have no real view on original setup, My question: was there originally some storage place in the front of the boat. The front has some kind on small sundeck...
  13. Y

    Advice on Removal of manifold Mercruiser.

    Hi, Engine Mercruiser 165HP, 6 cyl in-line from 1970's. Engine is in the boat. To fix a crack I started removing the manifold. The nuts and bolts are removed and the manifold is "loose" from the block. But I still have the U-shaped elbow that keeps it connected to the exhaust. I removed the 4...
  14. Y

    JB Weld or alternative

    Hi, after some checks and feedback from this forum I saw that there has been done a repair (no clue how long ago) on the block, probably bad winterizing. I will remove the exhaust manifold to have a better look at it, but I expect it was repaired with JD Weld or similar (I see the grey repair...
  15. Y

    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...
  16. Y

    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...
  17. Y

    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...
  18. Y

    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...
  19. Y

    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...
  20. Y

    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
Top