Does a 1990 4.3 cobra engine have a choke you need to use to start? can't find it

[andrewbabich]

Does a 1990 4.3 cobra engine have a choke you need to use to start? can't find it.

We are jumping the starter solidnoid with the key turned to get it to crank the motor. It almost fires up, but it won't. We have not found a choke or anything, it has a carb so I'd assume theres a choke somewhere.

Its a 1990 conquest boat.

 

[Don S]

Re: Does a 1990 4.3 cobra engine have a choke you need to use to start? can't find i

Do you use the throttle lever at all? It's not an EFI engine like a car that you just hit the key and it starts and runs perfect.

 

[wire2]

Re: Does a 1990 4.3 cobra engine have a choke you need to use to start? can't find i

Remove the flame arrester and look into the carb. You'll see a flat rectangular plate (called a butterfly) on a shaft that allows it to swivel. The shaft extends to outside the carb, where it will connect with a linkage rod to an actuator. That will likely be either a heat activated spring, mounted on the center passage (exhaust), or electric. For a cold start, that butterfly should be closed, (to draw more fuel from the jets). As the engine warms up, the choke will open progressively.

 

[coupza]

I have the same engine and am new at this but what I have learned so far is that you pump the throttle 2-3 time to get some gas into the carb and to set the auto choke for cold start. If you have the same throttle I do it has no button to push to deactivate drivetrain, instead you pull throttle arm toward driver and move forward to rev without engaging.


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[coupza]

Another thought...in case you've flooded it the way I did on my second trip out you will need to remove the flame arrester and hold choke open manually. In case you are alone a cloths pin makes a great second set of fingers!