Question about 1984 Honda Civic

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Problems with idleing with a manual choke

After the car has idled with the choke pulled for about 10 min. me and my wife still half to have the choke out while driving for a bit or it will stall...I think it maybe a vacum problem but I am niot sure... any suggestions on how to fix this issue??

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  • oryane Aug 31, 2008

    thnx....I will check the vacume lines...I do know the heat vent hose from the exhaust to the aircleaner is there **** I will also double check it as well and if worse comes to worst I will just have to pick up a new carb.

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Check the flexible pipe wich extends from the exhaust manifold to the bottom of the air cleaner inlet. if it is missing or not properly mounted you will have that exact concern. If it is there and looks functionable have the carburetor rebuilt by a professional. The primary fuel circuits are clogging/varnishing up and the passage becomes smaller not allowing fuel to flow properly. The engine can handle the lack of fuel better when warm. At the time of rebuilding they must check for cracked vucuum lines and check the linkage for the choke and fast idle cam. This will ensure proper fuel delivery and cold engine enrichment as needed. Good luck

Posted on Aug 31, 2008

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Hello I have a 1980 Ford Bronco 351 2bbl. Wondering if anyone knows which screws adjust what? Please if anyone has any ideas please respond. Thank you.


Here are some images that might help to assist you, and let me know if you require any further assistance.


Adjust the curb idle with the engine warmed up and the choke off.

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The air/fuel mixture screws should be adjusted with the engine warmed up and at normal idle speed, then turn each air/fuel mixture screw in one at a time until the engine just begins to mis-fire, then back the air/fuel mixture screw out 1-1/2 to 2 turns out a half a turn at a time until the engine idle is the smoothest. (your vehicle might have restrictor caps over the air/fuel mixture screws to limit the amount of adjustment)

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The choke adjustments;

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To adjust the vacuum tension pull on the choke pull-off:

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Adjust the fast idle screw to the proper RPM with the engine cold and the choke on.

cadcd19.jpg

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Hi,

Offhand, yes this would be normal. The high idle is brought about by the auto choke whose purpose is to hasten the reaching of operating temperature of the engine. The fact that the idle RPM goes down after some time is a good indicator, it tells us that the auto choke is working.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

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Priority Action Part Type Cause 1 Inspect Hose (Vacuum) Misrouted, damaged, loose, or clogged vacuum hose(s) grey_line.gif 3 Inspect Choke Pulloff Worn, defective, or faulty choke pulloff(s). grey_line.gif 4 Inspect Hood Brace Leaking, worn, or damaged intake manifold gasket grey_line.gif 5 Inspect Choke Thermostat Stuck or improperly functioning choke thermostat. grey_line.gif 6 Inspect Carburetor/Fuel Injection Gsk Deteriorated, or faulty carburetor/throttle valve mounting gasket. grey_line.gif 7 Inspect EGR Valve Clogged, dirty or improperly functioning or defective egr valve. grey_line.gif 8 Inspect Idle Air Control Valve Damaged, loose, or faulty idle air control valve. grey_line.gif 9 Inspect Idle Speed Control Actuator Damaged, loose, or faulty idle speed actuator. grey_line.gif 10 Inspect Idle Stop Solenoid Damaged, loose, or faulty idle stop solenoid. grey_line.gif 11 Inspect Throttle Position Sensor Faulty throttle position sensor or throttle position sensor circuit. here the answer to ur problem use autozone.com if this does not workor u need more info here to help Shaun

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