carb??
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=29914
Printed Date: October-09-2024 at 1:24am
Topic: carb??
Posted By: Gmoney
Subject: carb??
Date Posted: May-19-2013 at 7:37pm
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OK, first off full disclosure this is not a CC but a 1984 ski centurion. I picked it up last week and she fires right up but as soon as she idles down she quits and I can not get her refired. So 351, 1003 hours volley carb with electric choke ( disconnected). After bringing her home from a failed attempt at maiden this morning. I find that I have fuel gurgling from a port just I'm front of choke butterfly. Fuel dumps she's goes rich and floods. Rebuild? Thanks G$ ------------- "Hit it" |
Replies:
Posted By: Gmoney
Date Posted: May-19-2013 at 8:07pm
  ------------- "Hit it" |
Posted By: 81nautique
Date Posted: May-19-2013 at 8:43pm
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your problem is most likely your primary float is too low, that's the good news. The bad news is you don't have j tube vents and you have an externally adjustable float, all signs of a non Mairine rated carb. Before I rebuilt that I would replace it with the correct carb. ------------- You can’t change the wind but you can adjust your sails |
Posted By: Bilgewiper
Date Posted: May-19-2013 at 8:44pm
| My non expert opinion is the float sank or is stuck open. The fallowing won't effect or fix your problem but there Should be a J-tube in that hole that would dump fuel into the engine instead of the big fire hazard when it's missing or probably it's a non-marine carb. (J-tube can be bought separately). |
Posted By: Bilgewiper
Date Posted: May-19-2013 at 8:46pm
| yep I type too slow....81Nautique beat me to it |
Posted By: Gmoney
Date Posted: May-19-2013 at 9:26pm
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Wow,, thanks to both. I will check the float level and before carb replacement 619.00 I will try the 7.99 add on J tubes. My first boat a 78 CC used to catch on fire, I would prefer to skip that kind of excitment. I will keep you updated on my progress. thank you G$ ------------- "Hit it" |
Posted By: backfoot100
Date Posted: May-19-2013 at 10:09pm
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Hey Gary, If you had a boat that has caught fire before, you should know better than anybody else that an ounce of prevention doesn't have a price tag. Marine carbs have splined and sealed throttle plate shafts that prevent fuel leaks in addition to the J-tubes. Marine carbs are also jetted differently than their automotive counterparts. Auto carbs will run on a boat but it doesn't mean that they're right. Do you know what the CFM rating is that carb? I would think that somebody removed the vent tube from that carb because it was too tall to fit under the flame arrestor. I would suggest that you spend the money for a USCG approved carb. ------------- When people run down to the lake to see what's making that noise, you've succeeded. Eddie |
Posted By: Hollywood
Date Posted: May-20-2013 at 1:34am
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Good on ya for throwing up pictures with the opening post (which really help) but you're not going to get far on these forums disregarding USCGA safety regulations. Nice looking Supereme, you're not the only one. More pics please! ------------- |
Posted By: GottaSki
Date Posted: May-20-2013 at 11:53am
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Lets simplify things... G, You planning on putting any kids in the boat? Best safety-up. Best get the right carb, this one is already puking fuel and you've seen your boat on fire before. Luck is not a plan... Guaranteed its not jetted right and the primary metering block is wrong too. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: JoeinNY
Date Posted: May-20-2013 at 12:33pm
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http://www.nationalcarburetors.com/marine/fourbarrelholley.aspx" rel="nofollow - the good people at national carb make is just too easy to get the correct carb on there with a warranty for under 3 bills. Throw that old one on craigslist for beer money. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: Gmoney
Date Posted: May-25-2013 at 10:25pm
Thank you for that link...I worked on her all day. Started with the easy stuff got the blower going, the bilge working. Rewired some sloppy stuff behind the dash. Then went at the carb..JUNK. I will order up on Tuesday.. Its the right thing to do I was just hoping to get wet on the long weekend. I took some pics and will post when not on my phone.. Thanks everybody G$ Enjoy our blessings this weekend ------------- "Hit it" |
JoeinNY wrote:Posted By: Gmoney
Date Posted: May-26-2013 at 3:04pm
 lets see what pops up here.. ------------- "Hit it" |
Posted By: Gmoney
Date Posted: May-26-2013 at 3:17pm
 another ------------- "Hit it" |
Posted By: Gmoney
Date Posted: May-26-2013 at 3:27pm
 ------------- "Hit it" |
Posted By: Gmoney
Date Posted: May-26-2013 at 3:33pm
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I got a nice suprise while cleaning debri from the open areas in the rear gunell..broken chunks of glass bottles! I got lucky only a flesh wound. Things I still need to do, I would like to get the horn working and the running lights. Then I would like to make some gunell seats (Malibu did some in the mid 90s) the previous owner clear coated the swim step not sure if it will be to slippery. Beyond that a skylon and a bimini top... G$ ------------- "Hit it" |
Posted By: Orlando76
Date Posted: May-26-2013 at 7:24pm
| As a strange side note for marine carb vs. auto carb. When I bought my '76 SN 2 years ago I had a high idle that I couldn't adjust. While fiddling with carb I became concerned bc there was no J tubes. So I called Holley and surprisingly I got a human right away. I told them I had a 4bbl Holley but was not sure as to the application and had them cross reference the numbers. They came back and said it was a '73 ford marine carb. So I asked about the lack of j tubes and they said j tubes weren't required then. I'm willing to bet if a boat has straight tubes its an auto carb, especially with a modern one like yours. but according to Holley that's not always the case. |
Posted By: catamount
Date Posted: May-29-2013 at 12:59pm
That's pretty interesting! Thanks for sharing. ------------- 1987 MC ProStar 190 |
Posted By: Gmoney
Date Posted: May-30-2013 at 10:58pm
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Ordered new carb Tuesday from recommended link. Took three minutes.. Thank you G$ ------------- "Hit it" |
Posted By: Gmoney
Date Posted: June-15-2013 at 8:48pm
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Carb showed yesterday..10 days from order to shipment and a couple to get here. Gonna install later tonight then maybe a first tow tmr? Pics to come G$ ------------- "Hit it" |
Posted By: Gmoney
Date Posted: June-16-2013 at 6:35pm
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http://www.youtube.com/watch?v=42UkXOPpN6k New carb seems to be working out ok... Had to bring the idle down a hair but waiting for this heat to calm down a bit and just maybe get my first tug in tonight. Thanks again for all the great advice. G$ ------------- "Hit it" |
Posted By: Gmoney
Date Posted: June-16-2013 at 6:42pm
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http://www.youtube.com/watch?v=LKMhRmNw6vM You can hear the belts slip after the throttle snap. I rarely snap the throttle in use so its not an issue at this point. I did pick up a nice tappet on start up but it calmed down after it warmed up a bit. That has me scratching my head a little because when I ran it last couple times it has been butter smooth. I will pull the heads this winter but please make it through the summer... G$ ------------- "Hit it" |