Go Back   TeamTalk > Maintenance Tips, How-tos and Refurbishing Topics > Engine / Drive Train

Thread Tools Display Modes
Old 06-26-2013, 11:47 AM
Dangodz Dangodz is offline
TT Newbie
Join Date: Aug 2011
Location: 42 Baraby
Posts: 20
351 choke pull off

I am having some problems with my cold start on my 89 mastercraft tristar with ford indmar 351 engine, Holley Carb. I have found out that the problem is coming from the choke pull off which doesn't seem like fonctionning right. Can anybody help me to find the part? I can't seem to find it anywhere! When the engine is hot, it works flawlessly. But when it is cold it starts up but doesn't idle at all and keeps shutting off. I tried ordering this part.

Reply With Quote
Old 06-26-2013, 12:21 PM
thatsmrmastercraft's Avatar
thatsmrmastercraft thatsmrmastercraft is offline
MC Master Poster
Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 17,509
Is the choke staying closed too long? Have you tried adjusting the choke cap leaner? There is a bi-metallic spring inside the choke cap that over time will wear out and not open at the correct rate and need replacement.


Email - [email protected]
Reply With Quote
Old 06-26-2013, 01:10 PM
catamount catamount is offline
MC Fanatic
Join Date: Feb 2012
Boat: 1987 ProStar 190
Location: Vermont
Posts: 502
I'm not sure what you mean by choke pull off.

The best thing to do is take the choke cap off, put 12V to it (using battery and test leads) and see if the coil gets hot.

If not, then integrated choke heater coil is not working correctly and the engine heat may be activating the spring enough to open it at running temperature.

When my Holley choke cap died, I ordered an OEM replacement from eBay. Verify that it truly dead first, using 12V.
Reply With Quote
Old 06-26-2013, 01:25 PM
EricB EricB is offline
MC Fanatic
Join Date: Jul 2004
Boat: 77 S&S, 1983 S&& PS, and now a 98 Anniversary S&S LT1 PS
Location: St. Paul, MN & Balsam Lake, WI
Posts: 735
On a carb'd engine, you generally give the throttle 1 or 2 pumps prior to starting when cold. This pumping (or priming) will provide extra fuel for starting and allow the choke plate to shut completely when cold.
Once the engine fires up, engine vaccum is applied via a little passage to the choke "unloader" or the pull-off. This backs the choke plate open just a hair so the engine does not flood with gas completely. The pull-off is integral to the choke body assembly. It is adjusted by removing the electric choke coil assembly and adjusting the plate gap when activated. The electric choke coil is supplied battery voltage when running and will heat up and open the choke the rest of the way.
So to anwer your initial question, the choke pull-off is built into the choke body assembly. Remove the choke coil and you will then see it.
Why is is not working is the next question. It may be plugged and not getting vaccume. It may need adjusting. Next is up to you.
Reply With Quote
Old 06-26-2013, 05:00 PM
MikeyOrange88 MikeyOrange88 is offline
TT Enthusiast
Join Date: Jul 2012
Boat: 1988 Tristar 190 Sport (Closed Bow), 351W w/ GT-40's
Location: Southeast
Posts: 300
No Fast Idle Cam

I may be misunderstanding your issue, but to my knowledge marine carburetors do not include a fast idle cam that will keep it running at an elevated rpm until it is thoroughly warmed up. You have to do that manually by 'giving it some throttle' with the transmission disengaged (button pulled out below throttle lever).
1988 Tristar 190 Sport, 351W w/GT-40's, 1:1 Velvetdrive

Last edited by MikeyOrange88; 06-26-2013 at 07:41 PM.
Reply With Quote
Old 06-26-2013, 05:47 PM
waterlogged882 waterlogged882 is offline
MC Master Poster
Join Date: Dec 2004
Boat: 93 190
Location: lake
Posts: 12,362
John 14:6

Last edited by waterlogged882; 09-13-2015 at 09:38 PM.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 06:50 PM.