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  1. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    Hi again Kenny, I had another look today after giving the boat a good work out, although I cannot see any fuel dripping I did get white fuel vapour coming up past the choke flap on the Starboard side barrel… so I am guessing there is fuel going down there… what do you think? What would cause that?
  2. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    Yeah I realise that but if I raise the leg closer to the surface of the water there will be less back pressure so i should see some change on the Vac gauge…
  3. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    That makes a lot of sense Kenny, hopefully it’s as simple as that.. I’ll raise the drive leg all the way up to see if the reading changes.. 👍
  4. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    Hi Kenny, The boat is in the water, she is a 2655 Ciera Sunbridge. I take her out every winter but otherwise she is on a pontoon berth.
  5. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    Hi, thanks for the reply… the choke is coming off as it should and both blades opening right up, it a simple type with a bi metal coil spring which opens up with the heat from the head. I’m not sure what level of tune Mercruiser put on these marine conversions but the vacuum gauge needle jumps...
  6. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    The engine was running fine after its rebuild but the yard that did the work neglected to refit the stock water separator and fed the fuel line straight to the pick up pump. (This was just before I bought the boat). The boat had spent its life on a river. Not being familiar with the Merc’ 7.4 i...
  7. Mischief007

    Problems setting up a Quadrajet on Mercruiser 7.4 Bravo 2

    Hello everyone, I recently rebuilt my quadrajet carb on the 7.4L Bravo. I had to do this due to a dirty fuel issue. Since the rebuild I am struggling to set the idle air screws, she starts and runs with the screws 3 turns out but if I knock off the engine the hot starts are horrible and take...
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