Carb Question? |
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boat dr
Grand Poobah Joined: June-27-2004 Location: United States Status: Offline Points: 4245 |
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Posted: May-10-2010 at 10:14pm |
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Chris, Karens motor will idle for hours at 500 in gear.Bring the timing down to +4 or lower and it will idle even lower.The tranny gets a little rattle below 450 but this will do no harm.
When properly set ,carb /base timing, you should get an instant start along with a low idle speed and never touch the throttle .A fast idle speed will mask some idle tune problems,low speed adjustment or incorrect fuel level. Idle speed, about 7mph in gear @ 600, a little fast for docking with out the in and out of gear thing.I prefer to just slow down the idle ,saves wear and tear on it and the idle lope "sounds cool".. |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Before I had the carb rebuild last september by my mechanic, my boats idle was around where it was suppose to be. I guess after my mechanic started adjusting the carb he did not move the idle back up where it is suppose to be. Mine idled at 750 and 600 in gear, but when I got the boat back, idle was low. I am going to move it back up where it needs to be. After watching those videos over the weekend on youtube.com, sounds pretty easy to do. It was very windly down here over the weekend, so I did not get a chance to put her in the water. Friday afternoon looking pretty good. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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that is too low, in gear idle is 600-650, I would also say your timing is a little too advanced allowing you to set the rpm this low. |
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rman56
Gold Member Joined: April-13-2009 Location: Kansas Status: Offline Points: 661 |
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Thanks I will adjust it.
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1983 Ski Nautique
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Mine is at 600 at idle, and in gear 500. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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rman56
Gold Member Joined: April-13-2009 Location: Kansas Status: Offline Points: 661 |
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I need to also adjust the idle a little. It wants to idle around 800 to 900.
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1983 Ski Nautique
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Ok, so I can pour and adjust the idle by the boat not being in gear. Makes since.. Thanks Chris..
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1985 CC 2001-SOLD
Lee Michael Johnson |
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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not much cheaper a buck or two tops, Don't do this with the boat in gear, disconnect the cable at the carb and move the lever on the carb manually by hand as you slowly pouring the seafoam in both barrels, usually if you pour in the center of the two barrels it will go into them equally.
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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I got ripped on my Seafoam, by buying it at the freeking marina. I know the family well there and she conned me into buying a can, at the time I was winterizing the boat, and I told the her that I use stabile, but ended buying a can. Freeking 9.99.. for 160z... I am sure Oreily's or Napa has it cheaper than that..
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Chris, Ok, so take the wing nut off the top of carb, pour inside and the rest go in the tank. After watching the video on adjustin the idle, does it need to be in gear, or do I need to pull out the neutral pin while adjusting the idle. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Seafoam is sold in 16 oz can at O-reilly's
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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Specify "can" because the Murray's by me only carries it by the gallon!
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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pour half the can through the carb with the engie running increase the rpm to about 2000-2500k as your pouring it in and keep up the rpms until all the smoke clears from the exhaust, then pour the rest of the can in the tank now you cleand the top-end of the engine and the rest in the tank will take care of the carb internally.
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Chris I am not due yet. But I will pour that seafoam in the gas tank next time I get gas.. Curious if how it will do.. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Thanks Ernest.. Watched that video great stuff. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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If your about due for an oil change then add some and run it for the week-end and change the oil and filter otherwise don't add it to your oil. |
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emccallum
Platinum Member Joined: August-08-2006 Location: Clarks Hill SC Status: Offline Points: 1084 |
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Listen, no offense, but if you are having trouble figuring out the idle screw, I would suggest doing some reading on Holley carbs and familiarize yourself before you start adjusting. Go to Youtube and type in Holley carb adjustment. You should come up with some videos from Holley that walk you through adjusting a carb properly. Here is a link for idle speed: holley |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Also says on this Seafoam can that you can pour it into the oil? Is that right.. Wow! I might have to add one more to my repertoire..
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Hey thanks.. So where is the idle adjustment. Is it hard to do.. I would like to adjust mine about 200rpm |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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Luchog
Grand Poobah Joined: April-17-2007 Location: Argentina Status: Offline Points: 2135 |
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it is to prevent the carb screens from sticking into the bores
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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So what is prompting you to now want to use this snake oil? With the right concentration of SeaFoam and aviation fuel, you will break 50 mph! Hollywood I like you and but that wuz wrong.. Seafoam i am going to give it try. You old timers know your stuff so I better listen.. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Stick with 89, you will see a big difference. Main parts will not where out as quick. You will see a difference at the pump but that is about it.. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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What is it's primary function? |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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rman56
Gold Member Joined: April-13-2009 Location: Kansas Status: Offline Points: 661 |
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I think for starters I will fill the rest up with 89 and see if it helps. Where do you buy Snakeoil?
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1983 Ski Nautique
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Luchog
Grand Poobah Joined: April-17-2007 Location: Argentina Status: Offline Points: 2135 |
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the secondaries throttle stop adjustment screw?
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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Our 1200 hour 351 has run the exact same way for the last 800 hours we have owned it. Only 1 plug change and rotor change, and 1 carb rebuild for the sake of speed, didn't happen though. Oh, and I replaced the impeller after the first 400 hrs because someone gave me one (that was already 10 years old). A little SeaFoam over the 4 month winter layup is the only "additive" she gets.
Pete, I just used some Snake oil last weekend!
So what is prompting you to now want to use this snake oil? With the right concentration of SeaFoam and aviation fuel, you will break 50 mph!
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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I think hard starts comme from those probs. I had my boat tuned in 07, and have learned now that it is a 2 year job. I think those points, condesor and wires, plus your timing get way off.. What screw is that is bronze and very little for a flathead screwdriver right underneath the carb? |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Pete, So you like the snake oils.. Those make the internal parts of your boat run hotter, and eventually you will hear pings, and noise probs. I been told by some old guys and young guys to stay away. I have a bottle of Seafoam in the garage, thinking of using it to give itt a try if you think it will help. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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skicat2001
Platinum Member Joined: November-24-2008 Location: Ft. Worth TX Status: Offline Points: 1950 |
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Yes sir, I ran for the first 3.5 yrs with 87 and got a carb prob from it. I been told run the middle grade works wonders, and keeps the carb running alot cleaner, doesnt gum up as much.. |
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1985 CC 2001-SOLD
Lee Michael Johnson |
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rman56
Gold Member Joined: April-13-2009 Location: Kansas Status: Offline Points: 661 |
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The last half tank was 87 octane, is that too low for these boats?
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1983 Ski Nautique
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