Divorce choke replacement

Sounds like our new MerC Reman "357" engine. It's not a divorced choke (which should make it adjustable) but right now it's running sloppy rich at idle even "hot."

I actually plan on following Charlie's suggestion to wire it open, pump the throttle and set throttle to a higher idle speed for warm-up. Some mechanics claim the heavily rich choking washes lubrication off the upper cylinder walls.
 
PS I was thinking of converting mine to a manual choke or an electric choke but after thoroughly cleaning the choke plate and linkage it has worked fine for the last 2 seasons....
 
Iyou read the procedure for setting the choke on a quadrajet written over 60 years ago it's still the right way to go. When you get to the boat you pump the handle once and bring it back all the way.

This sets the high idle and just cracks the choke plate, Where people get into trouble is they cant leave the throttle alone. they get a a cough and the first thing they do is hit the throttle. this releases the choke plate and it closes and floods the engine.

When every thing is right the engine will start on high idla and warm up enough in 4 to 5 minuts to allow you to blip the throttle and let the engine go back to a normal idle.
 
Richening the fuel air mixture when cold gives the engine enuff fuel to burn. When the air temp is cold, it doesn't allow the fuel to evaporate to reach the correct fuel to air ratio. When cold, fuel will actually condense on the walls of the carb as well as the intake manifold, thereby starving the engine of fuel By increasing the fuel at start-up, you are giving the engine enuff fuel to burn. Once the engine starts, you don't need the extra fuel and it's just a waste.
 
What I meant to add was this:
Since the exhaust crossover doesn't get all that hot as compared to an auto application where the engine is running about 35 degrees hotter, the least bit of crud or oily dusty crud on the choke shaft or linkage can prevent it from opening up all the way...
 
quote:
Originally posted by KiDa

Don't laugh. VW and Porsche had manual drop tops for a loooooonnnng time. The most complex piece of equipment in that deal was the operator. Beyond that...a little grease and go.

Click to expand...


my sebring has so many sensors to drop the top its crazy, much to go wrong
 
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