Search results

  1. C

    1998 Johnson 115 Fast Strike Vapor Separator Tank (VST) bypass?

    old carbs also have a vent if vapors build up thanks to the need to balance with the atmosphere to let fuel enter the bowl...... natural venting not available in closed fuel systems especially....injection systems
  2. C

    Small crack in lower unit

    if not leaking ...still far from GC innards me I would drill a small hole maybe 1-16th up the crack grind the surface a bit to rough it up smooth out everything with high psi JB weld ......after a good wash of the crack with carb cleaner inspect a few times and if JB does not show stress...
  3. C

    1976 Evinrude 9.9

    if fiddling with the base gasket caused a reaction ... I would continue to focus on the pump base & gasket before going OEM...pump. carefully apply a light coat of sealant on both sides of the pump gasket and remount. I have never seen the need to do so by ...hey we can't see the problem...
  4. C

    1976 Evinrude 9.9

    2 man job.... one pulls one feels you have no options but to confirm pulses or not because buying an expensive OEM square pump will not solve the underlying problem... fuel must reach the carb.
  5. C

    1976 Evinrude 9.9

    ok first things is never give up...when reassembling these pumps mounting a few critical parts properly helps the reassembly ... mainly the springs ( big and tiny one with mushroom heads. To make certain they do not flip over I always wet the spring base with crazy glue to hold things...
  6. C

    HELP - Mercury Motor Won’t Start - Carburetor is suspect

    how does one confuse Mercury with OMC products ?
  7. C

    1976 Evinrude 9.9

    if not a pump issue cc pulsing may be weak due to a crankcase sealing problem ...if reeds are ok a volume flow test will confirm. or check with a vacum -pressure meter on the pulse port
  8. C

    1976 Evinrude 9.9

    if it worked with gravity feed ! the pump is not doing its job cyl comp. does not concern the fuel pump it runs on crankcase pressure build up when the piston downstrokes. Do the flow test suggested above fill the bowl.... pull the carb inlet hose..... and run 2-3 minutes ... measure...
  9. C

    1976 Evinrude 9.9

    based on AI ... say (1.5g/hr x 128 ounces / 60 minutes) x 3 running minutes shoud produce the 9.6 ounces of fuel at low pressure AI said.... A mechanical fuel pump on a 1976 9.9 HP outboard (whether it's an Johnson or Evinrude two-stroke) doesn't produce much pressure, but it does produce...
  10. C

    1976 Evinrude 9.9

    tricky thing here the engine works fine and the fuel hose is brand new so it seems doubtful a gray line would have self destroyed itself so fast. the carb is not being replenished by the fuel pump . one test would be to actually measue the volume of fuel pumped towards the carb inlet WHILE...
  11. C

    1976 Evinrude 9.9

    does it die idling or at wot.... remove the pump confirm that you feel a good pulse out of the pulse port .. if you do them recheck your pump reassembly if it only dies idling recheck carb low speed circuit and & drip chamber under top welch plug if never inspected lift fuel supply...
  12. C

    Model Tag - Protection

    scribe the info..mdl and serial # inside the housing with a dremel tool
  13. C

    1976 Evinrude 9.9

    the engine needs fuel..and when you are supplying it manually it runs so one assumes hoses are ok, few items to check... make certain tank venting is ok disconnect carb inlet fuel hose and crank the engine to confirm fuel spits out the hose to confirm the pump is or is not ok sucking fuel...
  14. C

    1987 Johnson 70Hp 2 stroke

    when were carbs serviced last ?? old style carbs easy to clean up
  15. C

    Core Plug (307588) Fell Out, Reuse w/ JB Weld or Replace? - 1985 Evinrude 4HP

    you could try to tap it lightly on the end to fatten up the diameter and drive it back in you could run a (greased up ) tap in the hole and close it up with a bolt and blue lock-tite
  16. C

    Unrealistic expectations for 71 20hp johnson?

    yes
  17. C

    1987 Johnson 70Hp 2 stroke

    starting involves proper choking when cold or dormant for hrs... carbs must be 100% clean especically low speed cct. check fuel pump fill (reprime) carbs check fuel hose check venting
  18. C

    Unrealistic expectations for 71 20hp johnson?

    check recirculation hose if you have one or oil purge valve if you have one on this engine.
  19. C

    Unrealistic expectations for 71 20hp johnson?

    Only had it a few years like a lot of things I should have kept it. Pushed it with a Merc 50 with surprising results. Came with 2 bunks, toilet (overboard !!) wash basin with overhead water tank... ( the owner who sold it to me is the one who had good memories... ! I think he married...
  20. C

    Unrealistic expectations for 71 20hp johnson?

    don't know about the 20hp capabilities but Crosby boats were great ! here is a Cruisette good for 90hp ...Sold it it years ago and now rotting in the guy's yard ...sniff sniff guess where my avatar came from ! visit fiberglassics.com library...
Top