Won't rev up
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=20150
Printed Date: June-27-2024 at 5:19pm
Topic: Won't rev up
Posted By: TRIP
Subject: Won't rev up
Date Posted: December-11-2010 at 2:45am
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Hi all,
boat ran perfect early today, like it has done since the carb was rebuilt a few engine-hours ago. Had to idle around for an hour today (tour with birdwatchers...), no prob whatsoever, but when I wanted to speed up after that hour the engine didn't want to rev up anymore. Sort of like it choked, it stuttered a bit, it kept running but just didn't want to go. Back to shore where I tried to rev it up in neutral; same thing, and it actually choked. Managed to fire it up again (lot of black crap from the exhausts it I remember correctly), then same thing, died again. Then wouldn't start again. Didn't keep trying cause I had to leave. Any ideas and suggestions are appreciated! Bottom line I think is don't use a skiboat for birdwatching...  ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Replies:
Posted By: 8122pbrainard
Date Posted: December-11-2010 at 8:53am
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Sander,
Did you ever rebuild the carb? Stuck float/seat? Choke opening all the way? With the black out the aft end, it's fuel related. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: TRIP
Date Posted: December-11-2010 at 2:15pm
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Yeah I guess it's carb related. It was rebuild 5 hours ago. Temperature stayed fine, nothing wrapped around the prop.
Thanks Pete, I'll check the float and choke today. ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: 8122pbrainard
Date Posted: December-11-2010 at 9:40pm
Somethings not correct. Fill me in on the rebuild. You? "pro"? Float level set? "Shade tree" mechanic?-I have no idea of whats available down there!!  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
TRIP wrote:Posted By: TRIP
Date Posted: December-12-2010 at 9:59pm
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Ha! You got a valid point there. VERY valid. However, I do have some confidence in this guy. First one actually that I trust down here... Here did the rebuild.
He concluded it's the sparkplugs and cables. Sparkplugs are always blacker than black. Boat started smoking pretty badly too (again) yesterday. He suggested using plugs with a higher temperature (or however you say that in english) because we're in a different climate than the US. Any opinions about that? ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: JoeinNY
Date Posted: December-12-2010 at 10:47pm
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yeah no.. nothing in your climate justifies changing the spark plug heat range. Your carb is probably just set a little rich... ------------- 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: kapla
Date Posted: December-12-2010 at 11:13pm
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check if you have raw fuel leaking into the carb..thus the black smoke, ------------- <a href="">1992 ski nautique |
Posted By: TRIP
Date Posted: December-13-2010 at 2:21am
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Thanks guys!
There is indeed some fuel leaking into the carb. Should (hopefully) be solved by getting new plugs and cables. Hope to get sparkplugs (24's they shall be!) tomorrow, will need to order cables from the US. ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: 8122pbrainard
Date Posted: December-13-2010 at 8:53am
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Sander,
It's the carb. Your guy sounds like he works on 2 cycle outboards!! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: eric lavine
Date Posted: December-13-2010 at 9:44am
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loss of 3% every 1000 feet of altitude.....but again the boat ran before messing with the carb ------------- "the things you own will start to own you" |
Posted By: kapla
Date Posted: December-13-2010 at 9:55am
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he is costa rica so I guess its sea level..no altitude problem..maybe some bird drop made it into the carb and fuzzed the float and its not closing right.. ------------- <a href="">1992 ski nautique |
Posted By: GottaSki
Date Posted: December-13-2010 at 11:16am
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Don't waste your money of plugs and cables, the carb's needle and seat is boogared up. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: Bri892001
Date Posted: December-13-2010 at 12:31pm
Your blackened spark plugs are a symptom of your leaking carb issue, not a cause. Although, once you get your carburetor to stop leaking, it might be worth changing to some new spark plugs if your old ones are fouled badly from the leaky carburetor. |
Posted By: boat dr
Date Posted: December-13-2010 at 12:40pm
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If the carb is an older style Holley,a sneeze will blow out the power valve.
The result will be an over rich idle , black plugs. The easiest way to tell is by trying to adjust idle mixture. If you can screw them all the way closed and if the engine will still idle, you have a bad PV........ ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: 8122pbrainard
Date Posted: December-13-2010 at 2:02pm
Sander, A voice from the CCfan past has spoken to me!!
He too wants you to check your choke to see if it's opening. If not, check to see if you have power going to the choke coil on the side of the carb. It's the round black thing with the wire terminals on it. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: JoeinNY
Date Posted: December-13-2010 at 2:29pm
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If the information is correct that the carb is leaking when it shouldnt be.. then gottaski is right and the seat and needle are boogered or the float misadjusted... also possible is the power valve blowout, choke not fully opening, general general carb misadjustment, etc.... none of which will be cured by a new set of plugs or wires..
Another longshot possiblity would be an engine running very cold due to a thermostat missing or running open all the time .. but again really the carb is what changed and it is the most likely culprit for the symptoms.. ------------- 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: TRIP
Date Posted: December-13-2010 at 4:55pm
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Sorry I missed that question Pete. But it does open all the way.
Problems didn't start after carb rebuild, but after idling for an hour. Until then it ran perfectly fine. I'm at 1800 ft alt by the way. But then again, it ran perfectly until last friday. Thanks for all the suggestions, gonna check it out this afternoon! ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: horkn
Date Posted: December-14-2010 at 4:14am
That's my bet. Either that or a bad PV. ------------- 78 martinique- refloored, reinforced, stringers re glassed, re engineered interior GT40P heads Edelbrock Performer intake acme 4 blade http://img.photobucket.com/albums/v64/horkn/fish/nautique.jpg |
Posted By: TRIP
Date Posted: December-15-2010 at 1:12pm
Well, turned out that the PV-gasket was missing, instead there was a metal ring there...  Changed that out et voila, carb leaking was over. However, still ran like sh!t. Changed the sparkplugs and... ran better than ever since I had this boat! For about 15 minutes when the steering cable broke  ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: 8122pbrainard
Date Posted: December-15-2010 at 3:47pm
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Sander,
I'm happy you got the problem fixed. Yes, it needed plugs but the fouling was caused by the rich condition from the carb. I know your choices of mechanics is limited but I'd be looking for someone else if I were you. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 8122pbrainard
Date Posted: December-15-2010 at 5:34pm
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Sander,
I've been spoken to again and it's been suggested that I bring up a issue that hasn't been mentioned. The altitude your at may require some different carb jetting. We have some members running at the higher elevations so maybe they will pick up this thread and comment. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Keeganino
Date Posted: December-15-2010 at 5:59pm
That is how it goes sometimes. I spent a few days in Arenal back in 2005. What a cool place to ride! Seemed pretty windy but I bet you have some good spots for calm water. Vulcan Arenal, Ronrico Rum and I had it out the last night I was there. Had an absolutley amazing display that night of lava flow and I could have stayed up all night watching. I was only a few hours short of that goal 
------------- "working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger http://www.correctcraftfan.com/diaries/details.asp?ID=4897" rel="nofollow - 1973 Skier |
Posted By: TRIP
Date Posted: December-16-2010 at 2:24am
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Pete, thanks! I wish I had the option of using another mechanic. Guess I'll have to keep educating myself right here!
And, I hope "they" keep speaking to you. Keep passing the messages on! Keegan, I hear ya! It is an amazing place. Does get very windy at times but indeed we're in a small cove protected from the wind. Fun year round :) Next time make sure you get the Ron Centenario. Mucho mejor! ;) ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: eric lavine
Date Posted: December-16-2010 at 10:00am
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wouldnt mind trying some of the local coffee Trip ------------- "the things you own will start to own you" |
Posted By: TRIP
Date Posted: December-16-2010 at 9:50pm
Somehow... that sounds awefully familiar! Did we talk about coffee before? Sorry, my faulty memory again. Damn Korsakoff... On a sidenote; boat ran GREAT today! Welded steeringcable held up perfectly (hope it will keep doing that until new one arrives), and new sparkplugs are a gift from heaven. Couldn't get 6 (temp) so had to put in 5 (the only thing available around here) but will change to 6 as soon as I can get them cause these do run hot (white). Everybody thank for the input! ------------- http://www.flyzone-cr.com" rel="nofollow - FlyZone Costa Rica Wakeboarding http://www.correctcraftfan.com/diaries/details.asp?ID=8406&sort=&pagenum=1" rel="nofollow - 1997 Super Sport |
Posted By: DMJY
Date Posted: December-17-2010 at 1:30am
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I know the news,thanks for sharing it. ------------- http://www.cartier4us.com - cartier love bracelets http://www.cartier4us.com/Cartier-Bracelets-10.html - cartier charm bracelets |
Posted By: eric lavine
Date Posted: December-17-2010 at 9:57am
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6 ???????? ------------- "the things you own will start to own you" |