'86 Barefoot Nautique 2001 |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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Yes, there are some good videos on you-tube. Look for excerpts from the holley dvd. Also, spend some time with the search feature here-use advanced search and check the parameters. Use 'any time' for the 'when'.
4-5 secs is almost a million. That could be several things probably; I'm not the resident carb expert. It does sound like you haven't spent a lot of time behind the wheel yet. An engine that's been sitting may still have some 'waking up' to do. Is the diaphram new? If not, it could be dried and/or stiff. Sorry if I missed it; how long has it been since it ran beyond what you've done? Not sure what's up with the choke. I'm guessing you know how it's supposed to work, so maybe age? Or did it come in the kit? Maybe the rod is bent a little? Mine holds almost 7 quarts. What reading are you calling high? Yes, it's a super ride and yours is in excellent shape; and while they aren't rare, not as many were made...even fewer with the BBC. Finally, I'd like to commend you on your approach to getting out on the water. |
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windexh8er
Newbie Joined: May-17-2011 Status: Offline Points: 11 |
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Thanks BuffaloBFN - I appreciate the feedback!
I've been watching a lot of videos since I've posted and I'm thinking it may be the accelerator pump at this point, so I'm going to do a little tweaking tomorrow to see if I can resolve the problem. As for the electric choke I found one good article on how to adjust it properly so I'm going to give that a try. I think it may actually be broken or not working correctly however based on what I've read. I took it apart and it looked clean inside - but since I've only dealt with mechanical chokes in the past I was slightly confused as to how it was supposed to work. Either way I'll learn something from it I guess! To answer your question the boat has been in my wife's family for quite a while (over 10 years I believe). Although, taken care of cosmetically very well (stored, covered, winterized, etc) the mechanical side has been neglected somewhat. I don't think the carb was ever rebuilt based on what the gaskets looked like. Amazingly none of the diaphrams were ripped. So what I did was rebuilt with a kit - so all is new in terms of carb internals. The only thing I really ended up "tuning" while in the driveway (because it seemed to be running very well) was the fast idle screw. I didn't touch anything else (which, I found odd). Anyway, thanks for taking the time to reply - I'll keep plugging away on Google until I have a lot of suggestions to try tomorrow. Sucks that there's so much boat traffic this weekend, but it is the holiday I guess! 7 quarts? I was scared to put more in after I hit full when changing. I ran it for a few minutes, let it drain back down, checked and added another .5 quart (total of 6). Came to the full mark on the stick (almost exactly). Seemed low for such a big engine - my Tundra takes more (4.7 V8 comparably). 60 pounds is where the gauge seemed to hover. Odd thing is it didn't sway a whole lot on idle vs under load. So maybe it's another gauge I have to replace. So far both speedos now work (with new pickups), volt meter seems to be off (compared to a reading I get off a multimeter on the alternator) by about 2 volts (low), temp gauge seems to work (what's hot for this motor BTW?) and fuel gauge bounces around like a super ball (but at least gives somewhat of an idea!). Oh yeah, the tach works too. Thank again for the commendation! I like to do things the right way, and - at some level - I feel like I rushed to get it out onto the water for the weekend. But I told my wife I'll probably pull it back out if it makes sense to work on other things. Oh - and, when I changed the oil (used the 20W-50 VR1 recommended BTW) I couldn't find a passage down into the pan from oil fill. So I used the cheesy oil drain tube - took forever, so I changed the plugs and rewired the new bilge while it ran like molasses. Maybe nobody's used that tube in a while, but it seemed painfully slow (and the oil was still warm - had it running maybe 45 minutes prior). Lots to do still. I think in the next two years I'll have the boat figured out! I'd like to get it to a point where it's one of those 'coveted' old school boats. But, not having a good background in boating it's going to be considerably more work on my part! |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Pete, you need to get on plane so the oil and water are sucked out by venturi effect, the trick is replacing the oil at the right volume to match what is draining into the lake, then you can use that penis enlarger for its intended purpose. 4 liters should impress the ladys! |
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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I was thinking that the secondaries might not be coming in as soon as they should. That's why I asked about the diaphram. Sometimes the port can plug up too. I think the accelerator pump is more for initial kick at lower rpms, but I could be wrong.
From your pics you look to have a completely unmolested engine from the factory, so I'd assume you have the same pan that I have...but we all know about that word.
Or maybe the sender. Marine senders are different than auto. Ohms I think; others can explain it better. There's also the wiring issues that can affect any/all of the gauges(most). I run between 20 and 60.
What's your handle and what's your 20? |
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windexh8er
Newbie Joined: May-17-2011 Status: Offline Points: 11 |
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@Overmyhead - are you on Lake Minnetonka? My wife and I will be moving back there in the next few months. Unfortunately the boat will stay at the cabin in SD.
@BuffaloBFN
Isn't the diaphram part of the pump (double pumper)? Probably getting at the same thing, my background for carbs are in 2-stroke sleds, so I'm probably off on my lingo.
So should I not trust the stick? I guess it may not have been perfectly level - but at the same time the engine looks like it's angled back a bit based on the motor mounts anyway. Hmmm...
Makes sense, I wouldn't be surprised if there were some noise on that circuit artificially pushing it up higher. I decided not to do the entire electrical because, knowing myself, I would have torn all of it out and done it from scratch and the boat would not be in the water right now.
Handle? My 20 is in SD. North of Sioux Falls where my in-laws cabin is. I'm more of a MN/WI guy personally. I'd rather be in the north woods! |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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I didn't say 'don't trust the stick'. Again, that engine looks all factory, so the correct parts should be there. Does your pan drain from the rear center?
The diaphram I mean is in the secondary vacuum chamber/pot. That mechanism opens the secondaries. Double pumper means it has 2 accelerator pumps. handle=name Cheesy old line from Smokey and the Bandit. SD...on my list of places to see some day. |
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OverMyHead
Grand Poobah Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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I live within a few miles of the grays bay (east side) of the lake. We do take the boat on the lake several times a year. It is a cool boating lake but you have to search out small bays for water sports. The central lake nearly has whitecaps on a calm weekend day from the 50 footers cruising around. The company I work for has secured a good part of the Twin Cities high end wood floor market. I have worked on at least 100 homes on the lake some valued over 12 mill. It is an honor just to work on them, but there is nothing worse than pounding in floors looking out at glass water and no traffic on a weekday. I hope you enjoy Minnesota, let me know if you need a boat ride or a ski pull. Dave. |
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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Morfoot
Grand Poobah Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5320 |
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Greg he went on the recommendation from Tim
From his google pic account I'm gonna guess it's David Meier Nice looking boat David... I really like those observer seats, pretty neat. Don't give up the fight, we'll get you back up and running puuuurrrrrrfect in no time. As far as what your voltmeter is reading on the dash as compared to what your multimeter reads straight off the alternator.....it's a common problem. They ALL do it. Common problem is the smaller gage grnd wire to the instrument panel from the factory. Your gages will probably peg to the right when you turn the nav lights on. Those here who have taken the time to fix it just went to a heavier gage gnd wire and it remedied the problem. |
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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David,
Tim's correct with the wiring issue but I recommend going heavier on both the ground and the hot feed up to the dash. BTW, a 2 volt voltage drop isn't that bad with the factory wiring. |
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windexh8er
Newbie Joined: May-17-2011 Status: Offline Points: 11 |
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Thanks guys!
So I'm pretty sure the electric choke is busted - which is why it's cranked to the leanest setting (always open). But the real problem is still the carb for now. I had my brother-in-law driving while I was watching and the secondary doesn't open if you are cruising slow and then hit it to WOT. It opens very slowly. I adjusted the springed nut on the primary pump - but I think I made the situation worse by lowering the amount of travel. Anyway - any thoughts on tuning in the secondary to open sooner? I think I might just need to buy a 4-barrel tuning guide at this point. Thanks and happy 4th if you're all enjoying fireworks tonight! EDIT: One thing I just thought about is the the baffle that's at the top of the metering block side that has the power valve. It's a small brass or copper piece - and I'm wondering if I had put that on wrong. Does the V of the baffle face up like a V or down like a ^? Just wondering if I may have put that on upside down. Just bugging me the throttle response is worse than before it was rebuilt. |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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That 'springed nut' is probably the accelerator pump. That's not related to the secondary and can kill throttle response if it's out of adjustment.
For the secondaries, you can replace the diaphram and maybe put a new or lighter spring in it. Take it apart first and see what's what. |
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