Welcome to Carver Yachts Owners Forum

We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com

You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

76 mariner 28ft twin 302 carb issue

GAS engine, transmission and generator repair and maintenance discussion forum.
User avatar

jwrape
Deck Hand
Deck Hand
Posts: 73
Joined: March 27th, 2014, 1:24 pm
Vessel Info: 79' Carver 28 Mariner Twin Pleasurecraft 302's (For Sale $12,300)
85' Carver 3207 Aft with Mercury 5.7L
Been thanked: 1 time

Re: 76 mariner 28ft twin 302 carb issue

Postby jwrape » April 23rd, 2014, 8:46 am

Lake Erie Monster wrote:I am a former mechanic and i hate carbs with a passion, perhaps its because im a young wippersnapper and can't figure out where to hook up the lap top. any way i just bought a 76 28ft mariner with twin pleasurecraft 302 fords and v drives. port engine fires right up and i mean right up. starboard fights you then floods and blows black smoke after a few minutes. so i tried a simple trick and swapped the carbs. starboard now happier than a clam. the previous owner had both carbs rebuilt last year and had continual problems with the starboard engine and had that carb rebuilt 2 more times to no avail. i have recipts for the services. is there somewhere on this toilette like fuel delivery system than can be cracked and causing it to pour fuel into the manifold? or possible something that is easily overlooked when rebuilding a holley 4 barrel? I'd rather not have to buy a new or remaned carb if i can fix it easily.



I had the exact same issue with both of my 302 pleasurecrafts on my 79 Mariner. I rebuilt both carbs and still had the flooding issue and would not start most of the time, especially on my Starboard engine and occasionally on the port. I have electronic ignition and was getting good fire but not enough obviously after I found the reason.

So I went to look at why my starboard was giving me such a hard time and always flooding and my Dad stops by and says "cross the Terminal resister and see if it will start"
He crossed it and it started immediately. I was amazed. Then I googled the electronic ignition and found that with electronic ignition I don't need the terminal resister in line with the coil AND the resistance in the resistors were worn out anyways and not holding their resistance of 2ohms, which makes sense why sometimes they start perfectly and some times not.

I wired a 30amp fuse inline where the Resistor was and now my engines start immediately.
The Terminal resistor looks like this white ceramic thing here
Image

Now it starts perfectly.
Shown here
http://www.youtube.com/watch?v=qvLaMIn4rHg&list=UU9CT249I05DyxqKD1RpYfpQ&feature=share&index=1

User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 1967
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: 41 times
Been thanked: 283 times

Re: 76 mariner 28ft twin 302 carb issue

Postby waybomb » April 23rd, 2014, 1:24 pm

A fuse in place of the resistor?

Carefully touch your coil after a run at some rpms. If it does not have its own internal resistor, you will find it to be very hot to the touch and it will fail. If the coil does not have an internal resistor, you need the resistor. Period. If you have some sort of issue with what has worked for years and do not want to use an external resistor, then buy a coil that has the internal resistor. Generally, older Crusaders used external resistors and Mercruiser Thunderbolt ignitions had coils with internal resistors.
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

jwrape
Deck Hand
Deck Hand
Posts: 73
Joined: March 27th, 2014, 1:24 pm
Vessel Info: 79' Carver 28 Mariner Twin Pleasurecraft 302's (For Sale $12,300)
85' Carver 3207 Aft with Mercury 5.7L
Been thanked: 1 time

Re: 76 mariner 28ft twin 302 carb issue

Postby jwrape » April 23rd, 2014, 1:52 pm

waybomb wrote:A fuse in place of the resistor?

Carefully touch your coil after a run at some rpms. If it does not have its own internal resistor, you will find it to be very hot to the touch and it will fail. If the coil does not have an internal resistor, you need the resistor. Period. If you have some sort of issue with what has worked for years and do not want to use an external resistor, then buy a coil that has the internal resistor. Generally, older Crusaders used external resistors and Mercruiser Thunderbolt ignitions had coils with internal resistors.


The new electronic ignition has a internal resistor built into it.
User avatar

Topic author
Lake Erie Monster
Scurvy Dog
Scurvy Dog
Posts: 27
Joined: March 2nd, 2014, 3:21 pm

Re: 76 mariner 28ft twin 302 carb issue

Postby Lake Erie Monster » April 23rd, 2014, 11:46 pm

mine is a 76 and it looks like a regular old distributor, how do i know if it is electronic
Adam and Shannon
28' Mariner twin 302's

"My other vessel is a Klingon Bird of Prey"
User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 1967
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: 41 times
Been thanked: 283 times

Re: 76 mariner 28ft twin 302 carb issue

Postby waybomb » April 24th, 2014, 7:29 pm

Take the cap off and look inside - if it has points and a condenser, you don't have electronic.
If electronic, you'll see something like this inside:
http://www.pertronix.com/prod/ig/ignitor/default.aspx
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

Topic author
Lake Erie Monster
Scurvy Dog
Scurvy Dog
Posts: 27
Joined: March 2nd, 2014, 3:21 pm

Re: 76 mariner 28ft twin 302 carb issue

Postby Lake Erie Monster » April 26th, 2014, 11:35 pm

jwrape what kind of speeds were you getting with that mariner
Adam and Shannon
28' Mariner twin 302's

"My other vessel is a Klingon Bird of Prey"
User avatar

Topic author
Lake Erie Monster
Scurvy Dog
Scurvy Dog
Posts: 27
Joined: March 2nd, 2014, 3:21 pm

Re: 76 mariner 28ft twin 302 carb issue

Postby Lake Erie Monster » April 28th, 2014, 12:50 pm

started engine hooked up to water and it deff starts with new carb, when i reve the engine it spiutters and bogs out. there are no float adjustments on this carb, can i only adjust idle mix?
Adam and Shannon
28' Mariner twin 302's

"My other vessel is a Klingon Bird of Prey"
User avatar

United States of America
waybomb
CYO Moderator
CYO Moderator
Posts: 1967
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: 41 times
Been thanked: 283 times

Re: 76 mariner 28ft twin 302 carb issue

Postby waybomb » April 28th, 2014, 1:20 pm

That's about it. Idle screws. Do you have a vacuum gage you can hook up to the manifold? If so, hook it up, tell us where the needle is, and if it's bouncing around at idle. Then rev it once and watch the gage needle and describe what it does exactly.
Check your timing.
Check fuel filters.
Check the antisiphon valves.
Check the fuel tank vents.
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

jwrape
Deck Hand
Deck Hand
Posts: 73
Joined: March 27th, 2014, 1:24 pm
Vessel Info: 79' Carver 28 Mariner Twin Pleasurecraft 302's (For Sale $12,300)
85' Carver 3207 Aft with Mercury 5.7L
Been thanked: 1 time

Re: 76 mariner 28ft twin 302 carb issue

Postby jwrape » April 30th, 2014, 6:38 am

Lake Erie Monster wrote:jwrape what kind of speeds were you getting with that mariner


Before I took out the resistor it would get up to 3500 rpm's max last season. I haven't driven it hard this season yet but it does rev MUCH faster and runs smoother. I am assuming it will run up much faster and smoother when I do take it out this season.
User avatar

Topic author
Lake Erie Monster
Scurvy Dog
Scurvy Dog
Posts: 27
Joined: March 2nd, 2014, 3:21 pm

Re: 76 mariner 28ft twin 302 carb issue

Postby Lake Erie Monster » May 10th, 2014, 10:31 pm

wow, i replaced the resistor and it runs like a swiss watch, starts easier than a cheerleader on prom night, i may not have even needed the carb... sigh
Adam and Shannon
28' Mariner twin 302's

"My other vessel is a Klingon Bird of Prey"

Return to “Gas Engines/Transmissions”



Who is online

Users browsing this forum: waybomb and 7 guests