4160 leak
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=38841
Printed Date: November-16-2024 at 3:28pm
Topic: 4160 leak
Posted By: DayTony
Subject: 4160 leak
Date Posted: May-31-2016 at 3:22am
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88 BFN 454, holley 4160. forward port booster will not stop leaking when running and leaking down after shut down. It was doing this prior to rebuild also. First off i am running the boat on a trailer, and tossed a bubble stick on the deck and made it level(i dont know where it sits in the water) but the carb is a hair out of level. I first noticed it and set the forward float as low as humanly possible because i thought at first float was too high.but it still leaks. ok. maybe the needle and seat are leaking. hooked a hose up to the feed and blew through it turned the bowl upside down, couldn't find any leaks. Even threw the old needle and seat back in just to check. took metering plate off and cleaned the sh$t out of it blew all the passages out. still leaks. Now everything points towards the needle and seat to me because after I throw it back on it wont leak for a few minutes of running. After i move the throttle around a little and then let it back to idle it will start dripping again. So its acting like the needle/seat is working fine for a little while but once it gets exercised a little it stops seating again. I guess my biggest question is i never payed any attention to the orientation of the carb when it sits in the water. how level is it. maybe i have to change the trailer tongue before i proceed any further. I hate admitting defeat but I am a click away from a Quickfuel. someone talk me out of it. ------------- 1988 Barefoot nautique-454 |
Replies:
Posted By: TRBenj
Date Posted: May-31-2016 at 9:34am
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Lots of bad needle and seat sets as of late, even right out of the box- you are likely chasing the right ghost. Swapping the old ones back in sometimes cures it. Maybe try another new set? Holleys aren't all that particular about being mounted level. Just set the floats properly and you should be fine. You sure wouldn't be upset about the quality and performance of a QF, but the $$ hurts a bit. |
Posted By: GottaSki
Date Posted: May-31-2016 at 12:48pm
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What Tim sez, also IF one or both primary idle fuel orifices are clogged, and you or someone upped the idle setscrew to make it run afterward,( common) it is now idling off the transition slots. A few minutes after running, fuel will perk up to the booster because the transition slot is aerating the fuel from the main jet and main air bleed. Causing a dribble from a booster or both, much like you described. IF you can't make the engine die solidly by closing the idle mix screws, then the above situation likely applies. IF the secondary return rod is now sloppy when the primary is on the idle stop, and one can rotate the secondary throttle plate 1/16-1/8" before it hits the rod, its another indicator that the idle has been opened to make it run, causing the above condition. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: DayTony
Date Posted: May-31-2016 at 6:32pm
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tim i had a chance to check the QF out a few months ago on a customers car. I was very impressed with fit and finish, not to mention adjustability. I'm going to give it another afternoon of fussing with.Those are some good points i didn't think of, Thank you. -Tony ------------- 1988 Barefoot nautique-454 |
Posted By: LeftFieldEngineering
Date Posted: May-31-2016 at 11:43pm
| Sounds like my 4160. I picked up a reman unit last summer and it worked great right out of the box except it was dripping from the front boosters. That was until I adjusted the front float. I had to set it way lower then spec. Worked great till last week, when I noticed it dripping again. I cleaned the life out of it and lowered the float again ans got it to stop dripping. Moral of the story, its a crap shoot. If I have it apart again I'll take a picture of the float height. |
Posted By: DayTony
Date Posted: June-01-2016 at 1:22am
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That was my first assumption because when i put the new holley in the fish I had to adjust the front float a lot more than normal because of the angle in these boats. So as it sits my float level now is about as low as it gets on the fwd bowl. If its not too hot tomorrow afternoon I will fire it up and give it a shot, luckily i have a plethora of holley parts and gaskets laying around. i must have had this bowl off a dozen times already. the blue gaskets only take so much. ------------- 1988 Barefoot nautique-454 |
Posted By: gR@HaM
Date Posted: June-04-2016 at 10:28pm
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This issue is close to my heart, I've had it 4 times over the last two years!! First: floats needed adjusting by a LOT, bent tabs back making the needles shut at 1/3 height Second: perished metering block gasket causing bad seal, purchased Holley 'trick kit' and replaced Third: blocked holes/channels below the boosters, cleared with compressed air Forth: lumps of ***************e blocked the needles, came from sealant in the fuel tank, fitted inline fuel filter Check all the above and you might be on to something :) ------------- '82 Ski Tique |
Posted By: gR@HaM
Date Posted: June-04-2016 at 10:29pm
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Wow can't even use the word s h i t e ------------- '82 Ski Tique |
Posted By: DayTony
Date Posted: June-06-2016 at 4:00am
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the gasket issue is something I have dealt with many times. Next time you have yours or any holley apart i dare you to put a straight edge up to the metering plate mounting surfaces, its enough to make you cringe. I have removed the mounting bolts and shes back on the bench, Ive never had this much of an issue with a holley before now. I know I'm getting clean fuel, theres a brand new Raycor before the pump. so nothing new has been introduced There's got to be something left in there somewhere. ------------- 1988 Barefoot nautique-454 |
Posted By: DayTony
Date Posted: June-23-2016 at 2:20am
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Things go so busy since i last pulled the carb, I sold my Fish nautique, sold the repower, sold an old tractor, bought a new tractor. lol I forgot where i actually left off with this thing aside form it sitting on my bench. This picture was in my phone and i forget if that was a before or after I adjusted the front float but it does seem on the low side to me. going to spend this weekend messin, with it.  ------------- 1988 Barefoot nautique-454 |
Posted By: DayTony
Date Posted: July-05-2016 at 7:19pm
solved my leak. ------------- 1988 Barefoot nautique-454 |
Posted By: Jonny Quest
Date Posted: July-05-2016 at 7:23pm
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Nice. Which model? JQ ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: DayTony
Date Posted: July-05-2016 at 7:55pm
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We decided to go with the M-750. I'm considering it the start for this winters overhaul. of the 454. I have to say the fit and finish is far superior to the Holley, and the sight glass in the bowl is genius. I had a few boat jobs that had to be finished before the 4th weekend and in the name of progress and lack of time to work on my own stuff I bit the bullet. When i found it through a canadian dealer for under $550 off ebay i pulled the trigger and just had to cross fingers with shipping, and it went through customs with no delays, It came in just a few days. Took it on the lake this weekend. It ran great. Out of the box it needed minor adjusting and had a bog off idle. turned out **acc pump** wasn't operating right away from the factory settings. then all was well. In other words we had a good first run of the season. ------------- 1988 Barefoot nautique-454 |
Posted By: TRBenj
Date Posted: July-05-2016 at 10:11pm
| 650 probably would have been a better choice for a stock 454 but glad it worked out. Mine needed little adjustment beyond setting the idle mixture. Definitely a high quality piece. |
Posted By: DayTony
Date Posted: July-06-2016 at 2:25am
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Stock at the moment, but as i said. overhaul this winter is in order and i believe a few more ponies will follow. It was the same price as the 650 too. You can say I'm crazy but I ran a 750 on a performer intake on my 351, It was the best thing I ever did to that boat. The 750 and Manual secondaries allowed me to tune so It was running on primary circuit right up to plane and cruise speed. about 25Knts. I almost never ran on the 2nd circuit. with that boat. The BFN on the other hand will be hitting those quite often. ------------- 1988 Barefoot nautique-454 |