OldSkool
Active Member
- May 8, 2010
- 4,360
- Boat Info
- restored 1976 SRV200
- Engines
- 188 Mercruiser I/O
I, like so many other, have experienced the dreaded power down after 30-45 minutes of tubing. It happened again this weekend.
I was pulling at 4800-5000 rpm when the throttle started backing off. It would only do about 3000 rpm (blower running the whole time).
We went into a cove and swam for an hour and a half then decide to tube some more. The first 20 minute went fine then it happened again. By chance my son opened the engine bay lid to look at the engine while we were running. It didn’t take more than a few seconds and the engine came alive. The thing shot to 5300 rpm like a rocket. It nearly yanked the person off the tube.
We ran with the cover up for a few minute then continued tubing for another 30 minutes with no problem. I looks like there is not enough air displacement in my engine bay. I thouth it was fuel related but never considered air flow. Dah.:wow: I’ll need to increase the blower or add some type of better venting.
Going out again on the 5th so I’ll keep you posted.
I was pulling at 4800-5000 rpm when the throttle started backing off. It would only do about 3000 rpm (blower running the whole time).
We went into a cove and swam for an hour and a half then decide to tube some more. The first 20 minute went fine then it happened again. By chance my son opened the engine bay lid to look at the engine while we were running. It didn’t take more than a few seconds and the engine came alive. The thing shot to 5300 rpm like a rocket. It nearly yanked the person off the tube.
We ran with the cover up for a few minute then continued tubing for another 30 minutes with no problem. I looks like there is not enough air displacement in my engine bay. I thouth it was fuel related but never considered air flow. Dah.:wow: I’ll need to increase the blower or add some type of better venting.
Going out again on the 5th so I’ll keep you posted.
