Question about Cars & Trucks
Engine tries to start but seems like it is not getting enough fuel have pulled carbs and checked the fuel pump it is working ok.my next step will be to dismantle carbs and check jetting any advise on how to reinstall carbs, going to be nasty
Before you start on the carbies . use a bottle of metholated spirits in the fuel tank. IT breaks down the surface tension of water and allows it to be drawn through the jets . IT is combustible the same as fuel and will not harm the engine . If you have a drain on the carby bowel then drain out ant water first.
Posted on Feb 16, 2014
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Posted on Jan 02, 2017
SOURCE: 1976 Gran Torino motorcraft 2150
Are you sure your idle ports ( size of pinhole) in carb aren't plugged with something? What happens if it starts to die, and you give it a quick squirt of WD-40 , down throat of carb?
Posted on Oct 18, 2008
you may have two oxugen sensors on your yukon. if so the oxygen sensor that controls that bank may be bad. from what you mentioned in your complaint, it sounds like it is the oxygen sensor.
Posted on Dec 24, 2008
After you dump the fuel in the throttle body it will continue to run on its own or die as soon as it burns up all the fuel you dump in? Do you have access to (Noid lights)? Are both plugs attached to the distributor?
Posted on Jun 24, 2009
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Feb 15, 2015 | Cars & Trucks
Mar 30, 2013 | Cars & Trucks
Both the Hi and Lo screws are simply needle valves. By turning them you allow more or less fuel to flow past the needle. When you adjust them you are directly controlling how much fuel flows through the idle jet and the main jet.
is your car have a choke plate lever ( for warming up ) (like old fashion ) ?
When the engine is cold and you try to start it with the pull cord, the engine is running at an extremely low RPM. It is also cold, so it needs a very rich mixture to start. This is where the choke plate comes in. When activated, the choke plate completely covers the venturi to see it in action). If the throttle is wide open and the venturi is covered, the engine's vacuum draws a lot of fuel through the main jet and the idle jet (since the end of the carb's tube is completely covered, all of the engine's vacuum goes into pulling fuel through the jets). Usually this very rich mixture will allow the engine to fire once or twice, or to run very slowly. If you then open the choke plate the engine will start running normally.
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