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Cold Start Struggle

livndlife

New Member
Joined
Mar 7, 2015
Messages
17
Hello all,
I just recently completed performing a couple of minor adjustments in preparation for the summer. I adjusted my A/F mixture as well as the electric choke. But ever since doing this, when I turn on the ignition during cold start, the engine struggles to turn over. It takes about 10 to 15 seconds before it turns over. Do you think I adjusted too lean and now not getting fuel in the bowl of the carb? I don't really want to put the adjustment back since it's now running fairly well especially after it warms up.
NOTE: I have a 4 barrel Edelbrock Carb.
 

Classicbronco71

New Member
Joined
Mar 6, 2016
Messages
13
Loc.
St. Tammany Parish
I had a mechanical auto choke on mine and it was difficult to start. It wouldn't fully close the valve on the carb. I replaced it with a manual choke full actuation. No more issues. Take the air filter off the carb see if your valve is fully choked before a cold start.
 

SHX669

Bronco Guru
Joined
Jan 9, 2009
Messages
1,997
By "turn over " I assume you mean start/run .
Did you have this issue before ? If not then suspect whatever you changed .
As far as the "cold start " - on both Broncos for about a year or two I've had to turn the ignition key to start longer before the motors will start and run . It takes a while to prime the carbs with gas. The theory is this new "formulated gas" evaporates out of the fuel bowls. I know one guy who went to an electric fuel pump because of this . He turns the key to run for a few seconds before he trys to start his motor . I have a feeling this is ONE of the reasons guys like their fuel injection setups.
 
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