Quick fuel carb install questions |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Tim, They will spark when there's isn't another ground wire connected to the block and there's a connected load somewhere! |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21133 |
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Grounds don't spark, man. The entire engine is a ground.
Now, if it was carelessly flopping into a 12v source that's another story... But the ground connection itself is not a danger. Zip tie it out of the way or cut it off- but no need to safely terminate it or connect it to anything. |
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6149 |
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You calling me a liar ? It was sparking. I think I ended up putting a new choke puck on that one too.
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21133 |
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Grounds won't spark... 12v ign feed absolutely will and I would not leave that one dangling. Ground connection is harmless though.
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6149 |
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I always got rid of the pig tail. One time the pigtail was sparking at the carb base so I trashed that idea and stuck with the factory stuff. You won't find a better running bolt on carb for stock applications on the market. They seem nearly fuel injected. Congrats.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Jeff,
Great that the fix was so simple and the carb is doing the job. Keep us informed on how the Quickfuel performs. I actually went looking at the Quickfuel site for instructions regarding the ground pigtail for the choke. I couldn't find anything so it seems logical that Tim's and Gary's thought's are correct it's used when there isn't a ground to the choke in the engine harness. So Jeff, I'd say you can ether toss the pigtail and use the original ground in the harness or piggyback it with the original like you have done. It never hurts to have plenty of ground points. Grounding problems are one of the electrical problems that do haunt us from time to time especially as our boats get older and corrosion starts to set in. |
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jblunceford
Groupie Joined: April-10-2015 Location: Hoover, AL Status: Offline Points: 89 |
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I doubled up both the qf carb supplied ground with the harness ground on the choke neg connection tab in a temporary fashion untill i can get to the hardware store for the proper connection (soon to fix).
Otherwise, the install was pretty straightforward. .....just had to adjust the throttle linkage & associsted support (which required unbolting the support and moving it forward to the next set of bolt holes). That 25" flex fuel hose connected up nicely. The QF carb primed itself pretty quickly and fired up nicely. Required a little adjust on the idle set screw the it ran like a charm. I noticed the QF instructions said to retighten associated bolts after running a while, so I'll check those again soon. Again, it appears so far to be a great upgrade...boat has never run better for me, but only my second season with the old girl...i hope to get severAl more years outa this 30 yr old beauty....I'm 53 so this boat reminds me of my heydays. I love the vintage... Many thanks again...this is a great forum. Cheers..,, Jeff in Alabama |
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Jeff in Hoover (Birmingham), AL
1986 CC Martinique Bow Rider 351PCM |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21133 |
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Re-read, Pete. Quick fuel grounds the choke to the carb body. The question is what to do with the ground in the harness that attached to the (formerly installed) Holley choke since it is not needed with the QF. No need to do anything at all with it.
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4112 |
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What was the fix
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jblunceford
Groupie Joined: April-10-2015 Location: Hoover, AL Status: Offline Points: 89 |
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Thanks all.....got er going... Running smooth now...great upgrade...appreciate all the assistance. Jeff in Alabama.
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Jeff in Hoover (Birmingham), AL
1986 CC Martinique Bow Rider 351PCM |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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I would guess they supplied it since not all engine harness has a ground wire for the choke. PCM does but I had to make one for my HM to ground the choke when I put the Holley. Not having seen it I wonder rather than not hooking it up,if it can be removed completely?
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Tim, Please explain to me why Quickfuel included the pigtail if they intended you to leave it loose. |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21133 |
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Id just leave it loose... It's no more a danger than that big piece of grounded metal under your carb.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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I wouldn't leave it loose. Quickfuel evidently wants you to make sure the carb is grounded which isn't a bad idea. I suggest connecting it to the neg on the choke and the engine harness but don't backyard hack it by trying to slip it under the same quick connect tab. There are "sta-con" quick connects called "piggyback". that is a proper means of connecting them together. |
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jblunceford
Groupie Joined: April-10-2015 Location: Hoover, AL Status: Offline Points: 89 |
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I just pulled the holley 4160 and put a m600 QF carb on my '86 Martinique 351...everything swapped over easily except the QF carb came with its own ground/neg wire (from carb body) connected to the neg tab on the elect choke module. The holley elect choke was connected to both a neg & pos wires from the engine wire harness. I know to attach the pos wire off the engine harness to the new QF carb elect choke pos tab, but what do I do with the neg wire off the engine harness? Can I leave it loose or should I try to slip it under the same neg tab that the carb's neg wire is ttached to?
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Jeff in Hoover (Birmingham), AL
1986 CC Martinique Bow Rider 351PCM |
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