All Choked Up |
Post Reply |
Author | |
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
Posted: July-26-2007 at 12:56pm |
87 SN w/351w PCM, carb 4160, stock about 900 hrs.
After a smooth start up, idle to the wakeless boundaries, and about five minutes of running on plane the boat suddenly bogs then shuts down. It restarts, runs down the lake then bogs and shuts down. Once I decide to head back to the launch the boat runs great. No more problems all day long. This happened one time several weeks ago. I replaced the fuel water separator. No problems again. After reading a post on how to properly adjust the choke I adjusted the choke. It was only a few degrees from where I put a mark from before. The next morning when I put in the boat started right up, idled to the wakeless boundary, planed out and ran great for a few minutes. Then sputtered and shut off. Same symptoms as before. Kept restarting and moving down lake and it began running smoothly again. No problems the rest of the day. Any ideas? |
|
David F
Platinum Member Joined: June-11-2004 Location: United States Status: Offline Points: 1770 |
Post Options
Thanks(0)
|
I had a similiar issue many years ago and embarassingly took me 2 years to find the problem. The difference here is that mine never ran right. It would idle and rev in neutral all day long. However, once under way and above about 2200 rpm, it would bog and die unless I back off the throttle.
I could not fix it, the boat shops could not fix it. Finally, I found the problem...I was using a too large hose clamp on the aeroquip fuel line I was using. Since the clamp was too large, it was not properly sealing the fuel line around the in line fuel filter and I was sucking air into the fuel. This in turn caused the fuel bowls on the carb to run dry when running under load above 2200rpms. The proper sized hose clamp fixed the problem. So, maybe you are sucking air into your fuel line ahead of the pump somewhere. Or, the pick-up screen (if one exists) is partially blocked. |
|
63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
Post Options
Thanks(0)
|
I think if you had a fuel pump or fuel line or float problem you wouldn't run fine later in the day, the problem wouldn't go away. So, I'd look closer at ignition.
Is this a conventional coil and points ignition? If so I'd look at the coil first, intermittant spark problems at higher rpms are sometimes a weak coil or one that changes output when heated up. I'd also disconnect each plug wire and reconnect, making sure they are in good condition. Hope this gives you a start. |
|
'63 American Skier - '98 Sport Nautique
|
|
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
|
I failed to note that it has the petronix breakerless conversion from the old points and condenser. Been that way for several years without a problem.
I suspected choke because it was okay until I adjusted it. Thought maybe once the engine was warm the choke stayed off the rest of the day so it was no longer a problem. I will go back through all of the fuel line connections and clamps. I will also check out the plug wires. They are the MagStar marine wires. Perhaps I'll replace the coil as well. Thanks for your input. |
|
87BFN owner
Grand Poobah Joined: August-25-2006 Location: Saline, MI Status: Offline Points: 2194 |
Post Options
Thanks(0)
|
did you try resetting the choke to the setting it was at before the problem accurred to see if it goes away?
|
|
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
|
yeah, I had a witness mark scribed into the choke. When it started acting up Mrs. Bum said "so, you adjusted the choke did you?" Actually the adjustment from where it was before I messed with it was very close. Anyhow, after moving it back to the previous setting it continued to be a problem. |
|
backfoot100
Platinum Member Joined: January-03-2007 Location: United States Status: Offline Points: 1897 |
Post Options
Thanks(0)
|
Bill, by your original post, you had the problem once, changed the fuel filter/water seperator and then was fine. Then did the choke adjustment.
I think you still have an issue from the original problem that the filter didn't fix. This issue just doesn't sound like a choke problem. Could certainly be an issue with the fuel delivery, but that seems way too inconsistant. There have have been numerous cutout issues like this posted before and I think that the Pertronix module might be starting to go out on you, or maybe the coil. I know that others have commented on here that the symtoms sound the same as what you're having. Just a thought. |
|
When people run down to the lake to see what's making that noise, you've succeeded.
Eddie |
|
David F
Platinum Member Joined: June-11-2004 Location: United States Status: Offline Points: 1770 |
Post Options
Thanks(0)
|
Bill:
Sometimes, random electrical/ignition problems can be attributed to a loose ground wire somewhere. Check all your ground points and make sure they are tight and corrosion free. |
|
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
|
Tightened all of the hose clamps on the fuel delivery system. Cleaned, inspected, and used tune up grease on each of the plug wires at each end. Replaced the coil. Inspected and tightened all of the ingition wiring and ground connections.
Hope to ski a few sets after work tomorrow. Find out if I made a difference. Thanks for your input. |
|
quinner
Grand Poobah Joined: October-12-2005 Location: Unknown Status: Offline Points: 5828 |
Post Options
Thanks(0)
|
Bill,
Way off topic but I thought you mentioned looking for TSC1 boat, this was on PN and I would think this is pretty cheap for a 97', perhaps it needs a lot of work. 97 Ski |
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
That '97 is almost in my backyard if I can help.
Greg |
|
87BFN owner
Grand Poobah Joined: August-25-2006 Location: Saline, MI Status: Offline Points: 2194 |
Post Options
Thanks(0)
|
BuffaloBFN what state is that in, and what area???
|
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
Cumming...yea it's ok to laugh at that...is the western side of lake lanier in northeastern georgia. It's about an hour's drive from atlanta. It's also about a 20 min boat ride from our dock on little river(part of lanier) and a good reason to have lunch at holiday marina!
side note 87, I'm envious of your stringers and floor as I know who did them Greg |
|
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
|
Thanks for keeping an eye out, but I need to sell the 87 SN before I can get a new boat. As for the lot of work part - I don't mind. |
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
Skibum-why the change of heart? I would've guessed that you'd want to be buried in that boat after all the time and work. I don't mean to be out of place, but you know what was done and more importantly, HOW it was done...
|
|
87BFN owner
Grand Poobah Joined: August-25-2006 Location: Saline, MI Status: Offline Points: 2194 |
Post Options
Thanks(0)
|
BuffaloBFN, how far from Buford are you, also how far from La Grange
|
|
SkiBum
Gold Member Joined: November-17-2006 Location: United States Status: Offline Points: 587 |
Post Options
Thanks(0)
|
I did all of that work to maximize the performance of the 87. I would really like to just buy a new 07 SN but prices are out of control. A 97 SN with the TSC hull and fuel injection will be a significant upgrade and may actually fit my budget. If I do sell the 87 I will be able to honestly tell the buyer that it is a great boat. Soon as I figure out what is going on with this random stalling problem - that is. |
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
What exactly are you chasin? I have to do most of the work you did on your 87 this winter, and I'm ready to get to it! And I'll be damn proud of it.
maybe you need a BFN...the 454 is not talked about as much here, but the power, holeshot(I have to warn new drivers not to treat it as a 351...WOT hurts!), and general workability are dead in line! I pull a number of younger boarders in my neighborhood and they would much rather see me coming than an 60-80 thousand dollar fiasco! LOL ...with mega payments and no hope of actually owning the boat...and not having the privilage of calling her 'her' the girls now, I'll have to say different, they like the expensive ones...but aren't you married?!!? :) and aren't the married ones the ones to impress?!!? LOL I could have a newer boat, but dave ramsey comes to mind... http://www.daveramsey.com/ Cash is king and I'm better than I deserve! |
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
87, I can do buford by water...LaGrange is aprox 1.75 hrs from here by car...why?
|
|
87BFN owner
Grand Poobah Joined: August-25-2006 Location: Saline, MI Status: Offline Points: 2194 |
Post Options
Thanks(0)
|
There are two BFN's for sale on the site down there. The 90 I am thinking really ahrd about, if it's still for sale emailed the guy but no response so far.. There is also and 87 BFN down there for sale thinking about. Although I just bid on the 2001 sport with the python in on ebay, so we will see what happens.
|
|
BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
Post Options
Thanks(0)
|
I should have so much money! LOL
|
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |