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  1. K

    Replacing head gasket in 3.0 mercruiser

    You should specify for marine use.
  2. K

    Quadrajet Accelerator Pump Rod in Rebuild Kit

    Many quadrajet kits I have used in the past had the wrong rod so I would just put the new cup on the original rod.
  3. K

    Do I replace the core plugs when engine is out?

    If the engine is fresh water cooled I would leave them in place. However I have been surprised in the past to see how much crud had built up in the rear and lower pockets of the water jackets. Most times the drain plugs are will not drain because of the build up. Also depends on if your boat...
  4. K

    bogging down after 5mins

    Your problem might just be the screen in the suction tube of the fuel tank. You will have to remove the entire elbow fitting that screws into the top of the tank. The screen will be in the tube remove it and throw it away. Also the anti siphon valve at the fuel tank outlet. Check the fuel tank...
  5. K

    Mercruiser 165's First Engine Align, Having Trouble

    I think you have the rear mounts installed correctly. At this point I would go ahead and mount the drives. If any of the rear mounting hardware was not in place or wrongly installed you would be able to tell by comparing from port to starboard.
  6. K

    Have spark and fuel, can't get the rebuilt engine to start

    Did the machine shop set the valves or did you?
  7. K

    Confused New Owner of an Old Boat

  8. K

    Confused New Owner of an Old Boat

    Try to post a picture of the crack on the gear housing. IMP boats were well built as I had a customer who had one. This being a “sweet water” boat the engine and manifold might be good enough for the time being. Your main issues will be with the drive shift cable system and possible...
  9. K

    How to Diagnose No Fuel at Carb 7.4

    When the engine was rebuilt did you install the fuel pump push rod that works the fuel pump?
  10. K

    Mercruiser 165's First Engine Align, Having Trouble

    I had the mounts cut and re welded depending on how much “drop” I needed. Most times 1.5” worked out. Mercruiser did make a short mount but you will have to do some searching. I even kept a shortened one in stock.
  11. K

    Confused New Owner of an Old Boat

    If the crack runs parallel to the prop shaft it would not be worth trying to repair it. Get a SEI unit and be finished with it.
  12. K

    MerCruiser 5.0 Carb Engine Compression Test, Two Piston came back with Zero

    Whether it is a Ford or Chevy engine it probably has stuck valves, if so then either there are some bent push rods or just some of the rocker arm studs have been pulled up. No big deal hammering them back but you have to free up the stuck valves. If you can do that then squirt some Marvel...
  13. K

    MC1 Gimble housing water tube smashed

    If you can get channelock pliers across and squeeze where the tube is kinked and then with a short 3/8’ drive extension in the tube while pulling you might be able to straighten it out enough. It does not have to be perfect.
  14. K

    Mercruiser 165's First Engine Align, Having Trouble

    A 3/8” turn buckle may make it easier in place of the come along.
  15. K

    Salt water leak

    2Xs with Scott06. I have had a leak from one of the rubber exhaust hoses , with the engine running wrap your hand around the rear of the pipe below the clamps.
  16. K

    Outboard needed.. interchangeability

    All stern drives, mercruiser, Volvo and OMC after 1977 were 4” shorter there fore the engines sat lower in the boat. Stamas hulls were made pretty good and hold up well. If the stringers are still solid you could have the transom filled then have an outboard bracket mounted then a 150-200 hp...
  17. K

    Carb Needle condition / function

    I bet that your fuel pump is not a genuine marine version. You should look into the correct pump for your engine. Does it have the Tygon hose from the side of the pump to the flame arrestor? Which engine do you have?
  18. K

    Mercruiser 165's First Engine Align, Having Trouble

    A small bottle jack might work with some wood bridged across under the engines. I have worked on several 25s and I know they are a PITA to work on.
  19. K

    Mercruiser 165's First Engine Align, Having Trouble

    I agree with the 2 fingers feel. I have seen myself beat the hell out of the alignment tool up/down/left/right and still not able to get it where I wanted it. As long as you do not have to “pile drive” the drive on it should be good. Usually as the boat gets a few hours everything falls into...
  20. K

    Carb Needle condition / function

    Check that where the needles protrude into the throttle body that the holes are not raised from over tightening, with the screws out the bore must be smooth. If the area around the small holes are raised you will have a hard time getting the idle smooth. In other words, the throttle body is...
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