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  1. K

    1977 OMC 235/Ford 351W Low Manifold Vacuum, Stalls when letting off throttle

    That is good. When every thing is right the idle mixture screws should be 1.5 turns out and the idle stop 1-1.5 turns. Are you sure the there are no vacuum leaks from under the carburetor? Are you sure the timing marks on the balancer’s “0” mark line up with the pointer with #1 If the cam is...
  2. K

    Mercruiser 160 mystery electronic ignition

    It looks like a Mallory Unilite. The conversion may be around 30 + years old. It appears the owner took really took good care of the engine. If it is a Mallory you may not be able to get replacement components. You can always update to the newer Mallory version or a Prestolite.
  3. K

    1977 OMC 235/Ford 351W Low Manifold Vacuum, Stalls when letting off throttle

    It could just a carburetor problem. Has it been rebuilt lately? Some time just the metering block gaskets are the problem from shrinking.
  4. K

    low compression 3.0 cobra (new)

    It almost appears that you may have an exhaust blockage. Sometimes the exhaust shutters break loose and restrict the exhaust.
  5. K

    Mercarb 2BBL accelerator pump check ball

    On the Rochester model the aluminum ball is held down in the pump well with a circular wire ring. Was there a similar one in the pump well of the Marcarb? If not then that ball may have been used on an earlier model. Does the pump plunger on your carburetor have 2 plunger cups back to back...
  6. K

    Does anyone know what this part is?

    It looks like part of the kit to pull a new fuel line and filter into a weed eater fuel tank.
  7. K

    1986 Bayliner Capri won't start after running great all weekend

    2Xs on the Capt. about the timing belt. Hopefully it will last long enough until the engine is running right. For all practical purposes try to get the genuine Volvo service and parts manual. Sierra will probably send you a catalog also that has the Volvo #s. Sierra# 18-5292 is the electronic...
  8. K

    DPS-b drive lifts in reverse

    There is probably a check ball and spring that may have something stuck in it. The older Mercruiser Prestolite systems were adjustable, I had a test manifold that resembled a Freon charging manifold. Too bad Volvo likes the “throw away” and pay system. Flushing it out is worth a try.
  9. K

    DPS-b drive lifts in reverse

    The best I can think of is that Volvo refers to this as a “Non Serviceable “ item. The pump body has a system like the Mercruiser style. There is a “trail out” valve which is also used to hold the drive down for reversing. The only thing you could try is to remove the lines from the rams, run...
  10. K

    DPS-b drive lifts in reverse

    To me if you had a internal ram leak the drive would not hold a trimmed position. Where is the trim pump located? Can you post a picture of the pump?
  11. K

    1986 Bayliner Capri won't start after running great all weekend

    I would leave the timing belt alone. When they are causing a problem the engine will not run at all. You may have to clean out the carburetor again. Get a extra spin on fuel filter so you will have a spare.
  12. K

    OMC Bad Gas

    Am I seeing right that there are only 3 screws holding the sender in place?
  13. K

    1986 Bayliner Capri won't start after running great all weekend

    The one between the tank and fuel pump should have a marine filter. Sierra# 18-7848-1 filter kit.
  14. K

    1986 Bayliner Capri won't start after running great all weekend

    Since you said the carburetor was dirty there may be some problems with the fuel tank. Remove the suction tube from the tank, there may be a small screen in the tube, it unscrews from the fitting and should be removed. Is there a good fuel water separating filter between the tank and fuel...
  15. K

    Overheating and hydro locked

    You can start by removing the spark plugs on the side that is getting water, connect a garden hose to the front of the manifold water inlet and just let the water run and see if water starts flowing out the cylinders.
  16. K

    OMC Bad Gas

    Take a close look at the fuel tank vent, did it somehow get re positioned so that water can get into it? Does the vent hose have a “hump” in it where it is connected to the out side vent? What about the fill cap?
  17. K

    Carb Problems???

    Sierra marine #18-5480, this is a complete kit with the coil and wires.
  18. K

    1983 Four Winns mercruiser 488 3.7L overheating HELP

    Another quick check is to remove the drive pump supply hose from the heat exchanger, with the flush out or the drive in the water start the engine and see if it is possible to use your thumb to stop the water from coming out. If you can then the problem is out side the boat. Either in the drive...
  19. K

    280dp loss of pds bearing

    There should be a bearing in the front also. So the engine needs to come out. The bearings are common and can be matched up at any bearing supply or maybe even a NAPA store as well as the universal joints. Sierra# 18-2744 bellows kit 18-2778 water hose connection...
  20. K

    Can't get over 3000 RPM

    If the carburetor has not been cleaned it would not hurt to go through it. There are some removable plugs that have screens that can be plugged. Most times the gaskets can be re used.
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