Logo
FULL SITE MENU

Recent content by Bowenlhzn

  1. B

    How screwed am I? Low compression in 1 cylinder after overheat

    Yeah it was definitely the O ring, picked up new ones for all 6 cylinders just to be safe and sanded the head on a piece of glass and the head seemed good still, I put a light coat of sharpie and it all got sanded off within a few passes on the sand paper. After replacing the o rings got...
  2. B

    How screwed am I? Low compression in 1 cylinder after overheat

    Yeah I was hoping that’s what it was. I’m not usually that lucky though, but your comment inspired me to check it. Popped the head off and about 1/4 of that ring was completely missing. Not sure how I got any compression readings with how much was missing. A marine shop down the road has a bunch...
  3. B

    How screwed am I? Low compression in 1 cylinder after overheat

    Took it out on the lake today so I could do a compression test on a warm motor. 5 of the 6 cylinders tested about 105 and the low one tested at about 85. Took it around the lake a few times and it seemed to be just fine besides maybe a slightly rougher idle. 85 is definitely low and outside the...
  4. B

    How screwed am I? Low compression in 1 cylinder after overheat

    Yeah I corrected the issue, the vro pump went out originally on the previous owner. He said he thought carbs just needed cleaned I bought it to fix and get a cheap boat I’ve done quite a few rebuilds on cars and trucks before and did some time as a diesel tech so I figured I could easily handle...
  5. B

    How screwed am I? Low compression in 1 cylinder after overheat

    I’ve got a 98 Johnson 150 fast strike. Brand new power head last year only took it out a handful of times since I rebuilt it with the new power head. I took it out this week and had to go through a channel connecting 2 lakes. In that channel somehow the water intake got clogged by some weeds not...
  6. B

    150hp Johnson fast strike dies after about 5 seconds

    I have a Johnson 150 fast strike. Recently I was having a problem where it wouldn’t get about about 3000 rpm while in the water. I took the head off and found that I had scored cylinders. I took it to a shop and got it bored out and then I rebuilt the motor with .020 oversized pistons since...
  7. B

    Johnson 150hp fast strike motor stalls while accelerating quickly

    that’s my bad, forgot I had taken a picture of the top cylinder too. Here is cylinder #3
  8. B

    Johnson 150hp fast strike motor stalls while accelerating quickly

  9. B

    Johnson 150hp fast strike motor stalls while accelerating quickly

  10. B

    Johnson 150hp fast strike motor stalls while accelerating quickly

    I finally got a chance to work on the boat again this morning, it’s been a little chaotic recently. I removed the cylinder head and the head looked fine, but the piston had a buildup of black stuff on it. The cylinder walls looked ok as well
  11. B

    Johnson 150hp fast strike motor stalls while accelerating quickly

    I have a 1993 Johnson fast strike motor, it ran fine at the beginning of the year last year, but later on I started to notice that if I accelerated quickly it would bog down and die. It would idle fine and if I accelerated quickly it ran just fine. Finally toward the end of the year it got to...
See more
Back
Top