Boats For Sale:
CAUTION QUICK FUEL CARB |
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lakedog55 
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Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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 Topic: CAUTION QUICK FUEL CARBPosted: March-25-2014 at 11:28pm |
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Do not trust their ground wire. I hooked it up and was getting spark at the throttle linkage.
probably would not of found it if I was not playing with it in the dark. This is a huge problem. I hooked up my ground and spark went away. |
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Lakedog55
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phatsat67
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Posted: March-26-2014 at 3:01pm |
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That was my plan anyways. Probably should contact tec.
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TRBenj
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Posted: March-26-2014 at 3:02pm |
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Ground wire? Im confused. Is this for the choke?
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phatsat67
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Posted: March-26-2014 at 3:08pm |
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QF comes with a pre grounded ground wire Tim. One wire choke hook up is what they advertise.
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TRBenj
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Posted: March-26-2014 at 3:20pm |
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Ah. So the choke is pre-grounded to the carb body, so you just need to add a single 12v ignition wire for the choke?
I would imagine its pretty common for a QF to be bolted to an aluminum intake, but cant think of what else would cause an issue that would be solved with a dedicated ground? |
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Riley
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Posted: March-26-2014 at 3:30pm |
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Not a QF, but a new out of the box carb. Should it be grounded some place else as it is mounted to an aluminum intake?
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hotboat
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Posted: March-26-2014 at 3:33pm |
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oops
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Brian
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Orlando76
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Posted: March-26-2014 at 3:48pm |
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I hate to be dumb but wouldn't the carb already be grounded through the bolts to the block? Maybe the initial ground isn't 100%?
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phatsat67
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Posted: March-26-2014 at 3:51pm |
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I prefer running ground wires to known good ground sources as opposed to grounding everything in every place it needs it.
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TRBenj
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Posted: March-26-2014 at 3:56pm |
Aluminum isnt a great conductor. The path would be: choke-->carb body-->intake bolt or stud-->alumimum intake-->intake bolt-->head-->head bolt-->block If the problem is in the ground path, then the aluminum intake would be my guess at the cause- but I cant imagine bolting to an AL intake wasnt a consideration. |
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Orlando76
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Posted: March-26-2014 at 4:24pm |
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Aluminum is a great conductor! Just not as good as copper or gold but better than an iron engine block. The resistance of aluminum is 21.2 ohms per 1,000 feet vs 85.7 for iron. But as mentioned always run a dedicated ground. QF should've recommended a dedicated ground. Almost trailer light issues would be solved if we didn't ground to the frame.
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Riley
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Posted: March-26-2014 at 4:58pm |
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I never gave it much thought, but grounding something right next to the fuel line doesn't seem right. We'll be changing that.
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lakedog55
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Posted: March-26-2014 at 11:43pm |
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Talked to a tech up their , he said he had heard of the problem before and said he would pass the information to the warning label person. Not sure that's the best solution. Personally I would do away with the pre wire ground and put some instructions with it. The spark it was throwing scared me and I do some dumb stuff.
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Lakedog55
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Waterdog
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Posted: March-26-2014 at 11:58pm |
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Back in the 80s a lot of houses used aluminum wire.
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lakedog55
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Posted: March-27-2014 at 12:05am |
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That's for sure. And a lot of them burned down. Something about the way they transmit. It would loosen the lugs at the meter and start arcing. Power lines are aluminum
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Lakedog55
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Orlando76
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Posted: March-27-2014 at 1:05am |
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That was a good eye lakedog, no doubt could've been disastrous. Since its a new engine maybe there was paint insulating the bolt holes a bit much?
I'm surprised as to the number of carbs that don't have silicone dabbed on the terminals of the electric choke bc that can spark very easily too. I had a local Nau***ue dealer install a carb and didn't dab the choke and I about came unglued. Aluminum wires are the best thing out there. Every transmission line in the US and most of the world is AL. Banned in houses in '76 with the exception to 8ga and larger. Problem with Aluminum is not the aluminum but the unskilled people playing with it. AL expands and contracts greater than most metals which creates loose connections if improper steps were taken and heat is the end result. Special procedures and devices are required for aluminum. I believe the country should stop paying 10x the cost for copper, install AL and EDUCATE a worker into an Electrician with the $ saved. |
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storm34
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Posted: March-27-2014 at 1:52pm |
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Yikes! Thanks for the note.
We're going to try a QF 600 on my Tique this spring. I'll be sure to check this out. |
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lakedog55
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Posted: March-27-2014 at 2:11pm |
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Carb seems fantastic besides that. So far only couple hours on it but only adjustment i have done is idle screw and ground wire.
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Lakedog55
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phatsat67
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Posted: March-27-2014 at 2:52pm |
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Solid. How about the choke and opening rate of the secondaries? Seem good?
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lakedog55
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Posted: March-27-2014 at 3:58pm |
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Choke is good. Usually stays running on second start when cold. Motor is so different now I can't be for sure might be coming in a touch late at about 3600rpm she gets a second wind.
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Lakedog55
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phatsat67
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Posted: March-27-2014 at 7:00pm |
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I like the ability to fine tune the secondary rate without switching out springs and such.
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lakedog55
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Posted: March-27-2014 at 7:17pm |
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I have not checked into adjusting secondaries yer.
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Lakedog55
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8122pbrainard
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Posted: March-27-2014 at 9:25pm |
Todd, I'm glad you are so well versed in the NEC. 
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Orlando76
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Posted: March-27-2014 at 9:39pm |
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Shoot I oughta be.
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Orlando76 wrote: