Search results

  1. R

    1986 90hp johnson primer bulb collapsing..hear me out

    brodmann, its in line under cowling. The fuel filter fuel level inside filter seems only half full in use. It's a serviceable filter.i got it very clean
  2. R

    1986 90hp johnson primer bulb collapsing..hear me out

    Only other question i have is...., if i manually tested the bulb in water, could it still be a faulty fuel bulb, like weak spring inside but works fine on bench test? Thanks folks, that's quality answers I was looking for, now I have something to go on. My tanks are 6 imp gal. Portable older...
  3. R

    1986 90hp johnson primer bulb collapsing..hear me out

    I have 120 psi x4.was just rebuilt before I purchased. I've pulled the bulb, it pumps fine either horizontal or upright. I've pulled the tank pickups,CLEAN/CLEAR. I've pulled the fuel filter ,clean it....it screws apart(nice) I did find the 8" hose from filter back to the engine fuel conn. Was...
  4. R

    25 hp (1976ish)Merc shifter rod

    A friends garage sale find motor. Installed new water pump only to realize the black shifter rod seal housing (with the black 2 inch peg)was in 180 degrees wrong and keeping the water pump plate and housing from sitting down on its flat surface. I thought ,"oh boy, i found the reason its not...
  5. R

    115 hp merc....unexpected revving...poor excelleration

    Also...water coming from front portion of engine..but only happens on the lake..not with muffs...you can see the water flowing over the one bolt head in photo
  6. R

    115 hp merc....unexpected revving...poor excelleration

    Leaking from bottom
  7. R

    115 hp merc....unexpected revving...poor excelleration

    UPDATE.....we have found water from a poor sealing gasket,leaking from the large side plate that has all the bolts through it..not sure what that cover plate is called. But...would water leaking from a gasket cause all these issues above?
  8. R

    115 hp merc....unexpected revving...poor excelleration

    Looks to me like the fuel line in behind this "cam" could be pinched off when the cam goes full travel...its all we could find so far...your thoughts,??
  9. R

    115 hp merc....unexpected revving...poor excelleration

  10. R

    115 hp merc....unexpected revving...poor excelleration

    So sorry So sorry..I'm not the sharpest... It's a 2stroke...4cyl....115hp...serial no. 0D269958...unsure of yr. Possibly 1992
  11. R

    115 hp merc....unexpected revving...poor excelleration

    Compression is 120 all across. When i take the throttle up it responds until i get to the last section of throttle it bogs, hesitates badly and finally stalls. Its very hard to get started again but finally does. i can drive around the lake from zero to half throttle but no further in speed or...
  12. R

    PHASEMAKER....Best way to tell?

    Is there a way to discern a phasemaker engine from a NON phasemaker?...is there one for sure item to look for
  13. R

    1970 merc 7.5 coil choices?

    engine ser.#2957779 I keep dropping spark on one cyl. once my engine warms up. Ive been told i need a coil. The coils listed for this engine are astronomically priced. Would other coils work that are physically the same. There are coils as low as $30 that look the same. thanks in advance
  14. R

    7.5 merc. portable fuel bulb soft

    I have an older but new cond. 7.5 merc. Its the old motor with the older style coils from the 60s. Both cylinders have 135lbs. It runs great when cold but once warmed up, it seems to drop one cylinder. Last time out i did notice the portable fuel tank bulb pumps up but seems deflated. It never...
  15. R

    90 hp johnson...wet under hood now not running so good

    One of my water hoses developed a crack and began to spray water all under the hood furthest away from the carbs at the rear. The engine began to hesitate. Ive done a comp. test and they all check good at 120 psi. Since the water hose cracked, i have had the engine hesitate and try to clear...
  16. R

    Why is the Evenrude/Johnson forum soooo busy compared to the merc forum?

    lol....like the question says...since i own both merc and evenrude and had to use both forums, i have real trouble getting anyone over at the merc forum to answer anything. Most folks over there get very few reponses and when we do get a response...it seems its a longer wait? Just curious as to...
  17. R

    Altittude and boat engines? California to Saskatchewan???

    wondering if a boat engine from California (479ft.) to Saskatchewan is 1580 ft. above sea level would have diffuculty running in its new environment. Would the jet need to be upgraded??
  18. R

    1970 merc 75 (7.5.hp) no spark...what is testing procedure?

    Hi...wondering what the procedure is for testing for no spark. It was progressively/intermittantly loosing spark and then finally will not run on both cyl. I pulled the lower plug wire ...it would not start.....i pulled the opposite plug wire...it started so i know i have no spark on lower cyl...
  19. R

    1970 merc 7.5hp....fires but snort wheez

    I bought this little gem used but its litterally like in new cond. The coils/stator were fried so i bought another used engine and its all been changed over. I have plenty of spark...i have tons of compression ...both at 110. New gas. Its been running...but barely running.... and she will not...
  20. R

    1970 7.5 merc..impeller change troubles

    swapping out impeller and cannot get the last inch in anymore.....just have it to where the i cannot yet get the nut onto the threads of the stud. Does anyone have a link to an online manual. thanks in advance.
Top