MickeyMick
Recruit
- Joined
- Jun 9, 2021
- Messages
- 3
Hi guys, good to be part of the forum community on iboats, thanks for having me.
I am having an extremely persistent problem on my 1995 130HP Evinrude V4. The cylinders on the port side of the machine are not firing. Last summer it worked fine all summer, but towards the end of the summer it started bogging down and dying when putting it in forward. If I would put it in forward and then in one quick movement go to WOT it would go fine one in three times. The other two times it would bog down and die. Now, however, since a month, the port side refuses to fire altogether. Here are the facts:
- 1,5 years ago compression on all 4 cylinders was 120 - 125
- 1 year ago I put in a new stator and a new powerpack
- New plugs, new leads.
- New water pump.
- All 4 sparks jump the 3/8 inch gap (!) I have also changed all the coils around, no difference. Port remains dead.
- One month ago i very thoroughly inspected, cleaned and rebuilt with rebuild-kits all the carbs. They look like new, all holes are free. All packings and rubbers are new, also the connections to the manifold. I reopened than and re-inspected them last week, all fine.
- Reeds look good, but have not taken them out. And there is no noticable kickback on the carburator inlets, that would indicate pressure being kicked out through defective reeds.
- RVO pump is rebuilt and seems to be in good working order.
- The engine starts fine and immediately, albeit on only the 2 cylinders on the starboard side. It revs up fine, but dies at idle, probably because the port side is not working. The starboard side gets hot to the touch, the port side remains cool.
- Fuel seems to go to the dead cylinders, because when I put my hand in front of the carb-inlets, fuel just jumps out for all 4 cylinders. Besides, the port sparks are wet.
The local marine mechanic has absolutely no time for me. He just tells me to do all the things I already know, and which I did, to no avail. He can have a look at it by the end of the summer, but that is way too late for me.
I don't have a compression tester handy, but do you think it possible that both port cylinders have lost compression in 1,5 year time? Is there anything else you fellas can think of that is causing this? Any input is very much appreciated.
I am having an extremely persistent problem on my 1995 130HP Evinrude V4. The cylinders on the port side of the machine are not firing. Last summer it worked fine all summer, but towards the end of the summer it started bogging down and dying when putting it in forward. If I would put it in forward and then in one quick movement go to WOT it would go fine one in three times. The other two times it would bog down and die. Now, however, since a month, the port side refuses to fire altogether. Here are the facts:
- 1,5 years ago compression on all 4 cylinders was 120 - 125
- 1 year ago I put in a new stator and a new powerpack
- New plugs, new leads.
- New water pump.
- All 4 sparks jump the 3/8 inch gap (!) I have also changed all the coils around, no difference. Port remains dead.
- One month ago i very thoroughly inspected, cleaned and rebuilt with rebuild-kits all the carbs. They look like new, all holes are free. All packings and rubbers are new, also the connections to the manifold. I reopened than and re-inspected them last week, all fine.
- Reeds look good, but have not taken them out. And there is no noticable kickback on the carburator inlets, that would indicate pressure being kicked out through defective reeds.
- RVO pump is rebuilt and seems to be in good working order.
- The engine starts fine and immediately, albeit on only the 2 cylinders on the starboard side. It revs up fine, but dies at idle, probably because the port side is not working. The starboard side gets hot to the touch, the port side remains cool.
- Fuel seems to go to the dead cylinders, because when I put my hand in front of the carb-inlets, fuel just jumps out for all 4 cylinders. Besides, the port sparks are wet.
The local marine mechanic has absolutely no time for me. He just tells me to do all the things I already know, and which I did, to no avail. He can have a look at it by the end of the summer, but that is way too late for me.
I don't have a compression tester handy, but do you think it possible that both port cylinders have lost compression in 1,5 year time? Is there anything else you fellas can think of that is causing this? Any input is very much appreciated.
