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Re: Start and stalls imediately
I would say ballast resistor, this is a resistor used to reduce power at the coil from 13.8 volt down to usually 9 volt. this allows an engine to have extra voltage for starting and run on the lower voltage. ballast resister faulty it runs out of spark when you disengage the starter
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Check the filter for carburetor ,it is located when fuel supply line screws into carburetor. This filter is a about an inch and a half long and is paper,really cheap purchase,replace this fuel filter. Fuel pump pressure is another thing to check.I am assuming this pressure is ok from what you have said thus far. Then a carburetor rebuild would be the next step if the fuel filter does not solve the problem. You will need the long carburetor number from the passengers side of the carburetor. I am assuming this is a 4 barrel quad. Let me know how this turns out
If your car stalled while you were driving it, look for an obvious reason first. Check to make sure you have fuel in the tank (if your gas gauge is working). Do not sit there and crank the car over, trying to get it to start, as you will quickly wear down the battery if it's not already bad. Check the probable causes for this kind of problems:- Ignition The ignition system is composed of: ignition switch, neutral safety switch, security bypass, plugs, wires (if applicable) and a coil, or in the case of coil-over systems, many coils. The ignition is also tied into the computer. The crank and cam sensors tell the engine where top dead center is. Though these sensors do not usually cause a no start, if they break, the computer will go into "limp home mode," which allows you to get the car to a service station. The car will run badly, and may stall out on you. If the plug wires, plugs or coils are bad and are causing the engine to misfire, the engine will run rough. This may also cause the car to stall when driving. Generally, it will start back up, but it may be difficult to keep the car running. Fuel The fuel system is composed of a fuel pump, fuel filters, and fuel injectors or a carburetor. Some cars have a throttle body---this looks similar to a carburetor and has only one or two fuel injectors in the middle of it. The injectors feed all of the cylinders. In a multi-port system, each cylinder has its own injector. Should the fuel pump go bad, the car will stall while you are driving, as no fuel is getting pumped up to the engine. Bad injectors in a multi-port system will make the car run rough, which can cause a stalling situation, but generally, the car will restart. Other Problems There are other problems that can make a car stall---in the ignition system, the fuel system or in the drivetrain. If the timing belt breaks, the car will stall. If the computer itself stops working, the car will stall. Neither item will allow a car to start back up until it is repaired.All vehicles have an idle air motor or valve. The idle air is governed by the computer and changes the idle. When you turn on the air compressor, you use some engine resources. This makes the idle speed on the engine drop. The computer senses this drop and sends information to the idle air to turn up the idle so the car does not stall. If this part breaks, when you slow down to a stop or to turn a corner, the car may stall. Because the running of a vehicle is complicated, there are many more things that can cause a vehicle to stall. These are the most common things that can cause a car to stall. Other things include wiring, fuses, relays, other sensors not working properly or at all, a bad alternator or a bad battery, or an overheating problem, just to name a few.
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Check the fuel filter. A completely plugged fuel filter will stop your engine cold
by choking off the flow of fuel to the carburetor or injectors.
The engine may not start, or it may start, then stall and die.
Next most common problem is the fuel pump failing.
Most modern electric fuel pumps can be heard when you turn the key on.
If you don't hear the pump running and your car will not start, it could
be your fuel pump. The first thing a mechanic will check is the
relay which sends power to the pump. If this is operating correctly
then the pump will have to be replaced.
On older, carbureted engines, cold stalling (and hard starting) is most
often due to an automatic choke that is sticking, misadjusted or
broken. Cleaning the choke mechanism with aerosol carburetor cleaner
may free up the choke allowing it to work properly again. If the choke
housing as an electrical heating element, the element may not be
receiving voltage when the key is on, or the element may have burned
out (check resistance with an ohmmeter).
Other causes of stalling with a carburetor include an idle speed
adjustment screw that is set too low (turn screw to increase idle speed
rpm). The engine may stall if the idle fuel mixture screw(s) are not
adjusted correctly or the idle mixture port(s) are dirty or clogged
with fuel varnish deposits (clean the carburetor and readjust the idle
mixture screws for smoothest idle). Stalling can also occur is there
are vacuum leaks in the carburetor, under the carburetor (bad base
gasket), or any vacuum hose connections to the carburetor or intake