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Holly Carb issue

GAS engine, transmission and generator repair and maintenance discussion forum.
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Dpoelstra
Scurvy Dog
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Posts: 24
Joined: April 25th, 2013, 9:37 pm

Holly Carb issue

Postby Dpoelstra » May 19th, 2013, 12:05 pm

Well I tried my first carb overhaul this weekend. The starboard endine was running very rich and was running uneven...not a consistent miss, but just uneven. The plugs were dry, black and sooty (rich condition). At idle I could see fuel at a steady and heavy drip in the carb...

I thought maybe needle and seat, but it turned out to be a stuck open power valve. It was dumping fuel all the time.

I bought a kit and tried my first overhaul, which scared me. I soaked everything overnight, cleaned, checked and double checked everything. Now she runs perfect. I just need to change the plugs.
Dan
"Brown Eyed Girl"
1981 Carver 3007 30ft. Aft Cabin
Huntington Harbour, Ca

"But why's the rum gone....?"

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United States of America
waybomb
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Posts: 1444
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 17 times
Been thanked: 141 times

Re: Holly Carb issue

Postby waybomb » May 19th, 2013, 5:02 pm

Yup, Holley's a re simple carbs to work on.

Good Job!
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
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EscapeArtist
Scurvy Dog
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Posts: 3
Joined: September 6th, 2014, 5:53 pm
Vessel Info: 1981 Carver 3007, twin Crusader 270's

Re: Holly Carb issue

Postby EscapeArtist » September 6th, 2014, 7:03 pm

How do I tell what kind of carb I have? My engine running noise sounds much like what was described in this first post. I'm not a mechanic, but have pulled off/cleaned my snowblower and lawnmower carbs without incident. Still, I'm a little intimidated by the increase in complexity. Should I be, or is there some easy youtube video ssomewhere I could follow?

Craig
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waybomb
CYO Moderator
CYO Moderator
Posts: 1444
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 17 times
Been thanked: 141 times

Re: Holly Carb issue

Postby waybomb » September 6th, 2014, 7:08 pm

Google holley carb, quadrajet. You will see the differenart what you have.
A holley has 4 venturi all the same size. A quadrajet has 2 small primaries and 2 huge secondaries.
And you YouTube does have videos.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
User avatar

EscapeArtist
Scurvy Dog
Scurvy Dog
Posts: 3
Joined: September 6th, 2014, 5:53 pm
Vessel Info: 1981 Carver 3007, twin Crusader 270's

Re: Holly Carb issue

Postby EscapeArtist » September 6th, 2014, 7:13 pm

Shall do, thanks Fred.
User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 1444
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 17 times
Been thanked: 141 times

Re: Holly Carb issue

Postby waybomb » September 6th, 2014, 7:18 pm

Both are really simple to rebuild.
The best thing to do is soak all the disassembled parts in hydraseal. Our buy two cans of gum out and spray every hole for at least a few seconds. At least as long as it takes to come out the other end of the hole.

Do NOT bend any linkages.

You will be fine.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft

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