Rough idle when warm, engine cutting out

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hey guys,

So I've been using the boat a lot lately (1991 Barefoot Nautique with a 454), and I've consistently been having a n issue of rough idling when the engine is hot. The ignition has been replaced since new, could this still be an issue? When I am underway everything runs smooth - except rarely I have had the engine stop while underway (about 3 times, I just start back up and its fine).

When I had the boat out a few night ago, a new problem came up. I was floating for a while, started it up, and noticed the oil pressure run up to about 70 PSI. This thing is always sitting at 40 PSI and about 140 degrees temp. I noticed the temp bump up to about 150 degrees which I wouldn't think much of, but the oil pressure was unusual. So I turned it off, and the gauges didn't go to zero, the pressure went to 20 PSI. I turned the key on and off and the gauges did some weird crap like maxing out with the engine turned off. 

A lot of weird stuff going on, not convinced it is all tied in to the same problem, but let's see if someone can help me get started in the right direction.

Thank you,

Grant

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
grkero Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: July-04-2011 Location: Sacramento, CA Status: Offline Points: 38	Post Options Post Reply Quote grkero Report Post Thanks(0) Quote Reply Topic: Rough idle when warm, engine cutting out Posted: July-07-2013 at 1:13am
	Hey guys, So I've been using the boat a lot lately (1991 Barefoot Nautique with a 454), and I've consistently been having a n issue of rough idling when the engine is hot. The ignition has been replaced since new, could this still be an issue? When I am underway everything runs smooth - except rarely I have had the engine stop while underway (about 3 times, I just start back up and its fine). When I had the boat out a few night ago, a new problem came up. I was floating for a while, started it up, and noticed the oil pressure run up to about 70 PSI. This thing is always sitting at 40 PSI and about 140 degrees temp. I noticed the temp bump up to about 150 degrees which I wouldn't think much of, but the oil pressure was unusual. So I turned it off, and the gauges didn't go to zero, the pressure went to 20 PSI. I turned the key on and off and the gauges did some weird crap like maxing out with the engine turned off. A lot of weird stuff going on, not convinced it is all tied in to the same problem, but let's see if someone can help me get started in the right direction. Thank you, Grant

Bri892001 Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947	Post Options Post Reply Quote Bri892001 Report Post Thanks(0) Quote Reply Posted: July-07-2013 at 11:02am
	The boat is about the right age to be having some general electrical issues. A general cleaning of all your terminal connections might help. I'd say to focus on you ground connections initially. Especially the engine block grounds and your battery connections. From there you may want to look into running a new ground to your dash and adding a common bus strip.

Rough idle when warm, engine cutting out

About CCF

Donate

Partners

Contact