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WOT less than 3k
- tonyiiiafl
- CYO Supporter
- Posts: 890
- Joined: November 19th, 2015, 4:00 am
- Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
- Location: Cape Cod, MA
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Re: WOT less than 3k
- waybomb
- CYO Moderator
- Posts: 2414
- Joined: February 5th, 2013, 9:24 pm
- Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15 - Location: Saint Joseph,Mi
- Has thanked: 50 times
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Re: WOT less than 3k
Tell me what the needle is doing at idle, and the level of vacuum at idle.
Fred
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
- Capn Crunch
- Deck Hand
- Posts: 72
- Joined: August 30th, 2018, 9:23 pm
- Vessel Info: 1995 Carver Santego 310
Crusader 350XL injected, Hurth Inboard - Location: On the Mighty Columbia River in the Pacific Northwest
- Has thanked: 87 times
- Been thanked: 7 times
Re: WOT less than 3k
waybomb wrote:Source of the post Hook up a vacuum gage to manifold vacuum.
Tell me what the needle is doing at idle, and the level of vacuum at idle.
I can't until Tuesday, Mechanic has Quadra-Jet pulled, in a tank soaking and destined for a rebuild kit Monday... reinstalling Tuesday.
- Capn Crunch
- Deck Hand
- Posts: 72
- Joined: August 30th, 2018, 9:23 pm
- Vessel Info: 1995 Carver Santego 310
Crusader 350XL injected, Hurth Inboard - Location: On the Mighty Columbia River in the Pacific Northwest
- Has thanked: 87 times
- Been thanked: 7 times
Re: WOT less than 3k
tonyiiiafl wrote:Source of the post I had that issue, and it turned out be a soft camshaft, lobes were worn.
Man I hope that's not contagious...
- Capn Crunch
- Deck Hand
- Posts: 72
- Joined: August 30th, 2018, 9:23 pm
- Vessel Info: 1995 Carver Santego 310
Crusader 350XL injected, Hurth Inboard - Location: On the Mighty Columbia River in the Pacific Northwest
- Has thanked: 87 times
- Been thanked: 7 times
Re: WOT less than 3k
Mechanic brought his mentor... proceeded with re-checking timing, this time @ idle and @ 3k to prove advance working - check!
Mentor then pulled each plug wire one at a time while running and found #4 not getting spark. We never found a break in the wire but after disconnecting and reconnecting wires and pulling left bank off the wire holder mounted on block the motor sounded like a race engine compared to previously. We then sea trialed her - hit 4100 right away, he trimmed motor out to see 4500rpm... and hit 29 mph!!! Woot Woot!!
Thanks all for your suggestions... extremely happy that it turned out to be something minor... and got new electronic advance, carb rebuild and fresh tune-up gratis to boot!!
Mark
- Capn Crunch
- Deck Hand
- Posts: 72
- Joined: August 30th, 2018, 9:23 pm
- Vessel Info: 1995 Carver Santego 310
Crusader 350XL injected, Hurth Inboard - Location: On the Mighty Columbia River in the Pacific Northwest
- Has thanked: 87 times
- Been thanked: 7 times
Re: WOT less than 3k
So my question is just how much different would wires be across all the different versions of a Mercruiser Thunderbolt 5.7L carbed engine?
Ok, 2 questions... where do you all go online to get parts like this?
Thanks again to all for keeping me on the straight and narrow...
Mark
- bud37
- Admiral
- Posts: 4689
- Joined: April 23rd, 2015, 10:22 pm
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Re: WOT less than 3k
- Capn Crunch
- Deck Hand
- Posts: 72
- Joined: August 30th, 2018, 9:23 pm
- Vessel Info: 1995 Carver Santego 310
Crusader 350XL injected, Hurth Inboard - Location: On the Mighty Columbia River in the Pacific Northwest
- Has thanked: 87 times
- Been thanked: 7 times
Re: WOT less than 3k
bud37 wrote:Source of the post Heh Mark....try Mercury website and there is a parts drop down where you can choose your engine type and serial number range etc and then pick thru what parts you want and get the numbers ....that is what I do, at least that way you will be armed with some info when you go to get the parts.
Thanks bud37... after arming yourself do you shop online or locally for tune-up parts? If online, where do you normally shop?
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- CYO Supporter
- Posts: 2292
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
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Re: WOT less than 3k
Wires can have different ends for standard ignition / newer electronic ignition, also the plug boots may be straight or 90 degrees and the wire sets will be different lengths for different applications.
I usually shop online, as no one near me stocks the marine part numbers even after x ref.
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