1977 888 carb replaced wont run below 1200 rpm

Post Reply
sfoster
Ensign
Ensign
Posts: 17
Joined: Sat May 02, 2015 2:40 pm
Contact:

1977 888 carb replaced wont run below 1200 rpm

Post by sfoster »

As the title suggests,
Cant get the engine to run below 1200 rpm.
Should the cable be cramming the carb closed?
I've been trying to run it with out the cable hooked up.
Boat ran good one trip, float stuck open kept flooding out, replaced carb. I've been trying for hrs to get this adjusted.
Kept going back to Factory settings to keep a base line.
It did run at 500 rpm for a short time when it was cold. Once warmed up I couldn't duplicate it. Choke function right, timing right, point set to speck...... ect

Please help
User avatar
jhnmdahl
Vice Admiral
Vice Admiral
Posts: 1885
Joined: Tue Jan 06, 2015 5:11 pm
Location: Twin Cities, MN
Contact:

Re: 1977 888 carb replaced wont run below 1200 rpm

Post by jhnmdahl »

You should be able to adjust it down to 650-700 rpm with the idle screw, and not have it stall out when starting. If it stalls out, sticks, and whatnot, I might try running some Seafoam or whatnot through it to make sure everything's free of varnish and moving properly before readjusting.

John
Administrator of the www.cobaltchat.com Cobalt boats community forum
2015 210 (Volvo Penta 5.7L V8-225)
sfoster
Ensign
Ensign
Posts: 17
Joined: Sat May 02, 2015 2:40 pm
Contact:

Re: 1977 888 carb replaced wont run below 1200 rpm

Post by sfoster »

So......
Installed the cable, that's the trick. Come to find out one needs the cable to hold the carb shut.
Thank you for the reply. Also the 650 to 700 rpm would that be at operating temperature in gear?
User avatar
jhnmdahl
Vice Admiral
Vice Admiral
Posts: 1885
Joined: Tue Jan 06, 2015 5:11 pm
Location: Twin Cities, MN
Contact:

Re: 1977 888 carb replaced wont run below 1200 rpm

Post by jhnmdahl »

Glad to hear you got it going, and thanks for reporting back. The 650-700 rpm is idling in gear, in the water. I might err on the high side of that if I've had stalling issues.

John
Administrator of the www.cobaltchat.com Cobalt boats community forum
2015 210 (Volvo Penta 5.7L V8-225)
sfoster
Ensign
Ensign
Posts: 17
Joined: Sat May 02, 2015 2:40 pm
Contact:

Re: 1977 888 carb replaced wont run below 1200 rpm

Post by sfoster »

Well got the boat out on the water yesterday. Got towed back to the ramp. Drug it to the boat shop, had some guys admiring the old tub. I'm Fed up with it at this point.
Thanks again for the support.
Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests