I have a stock 302. It's so hard getting it to start after a couple days of not driving it. I have to pump the gas about 20-30 times before I can get it to start. Once it start it runs perfect. I am pretty new to the whole carb thing but what's the process for starting a car? You press the pedal all the way, then you pump it a couple times, then you start it, then you let it run for a few minutes and press the pedal again right?
Under normal conditions yes. I have seen some fuel pumps that have a diaphram that is allowing the fuel to go into the oil. not that that is what the problem is but I have seen that before. It also sounds like maybe a choke not closing...
Sounds like the pump on the carb is not delivering a full shot. Look down in the carb [with the engine off] and work the linkage. Gas should stream into the carb for a second or two.
Possibility that when you shut the car off, the fuel left in the carb bowl syphons back to the tank slowly. Try shutting off and then come back to start car 3 hrs later when engine is cold again. If it starts fine then you have a syphoning problem prob.replace fuel pump and this should solve problem. After 2-3 days the fuel bowl is empty.therefore you have to turn over the motor to get mechanical fuel pump to fill fuel bowl again. Hence the pumping of pedal 10 or more times to get a squirt of fuel in engine. Good luck
i cant see how fuel wil drain out of the fuel bow back into the tank. the needle and seat that allows the fuel in to the bowl is in the top of the bowl. so it cant siphon the gas out of the bowls. first thing that you need to do is see if there is gas in the carb when you expect it to be hard to start. so next time you let it sit a couple of days, before you start it, pop the hood, take off the air cleaner, stick you head above the carb so you can see right down it. stick your finger into the choke to open it so you can see in it and then move the throttle lever throught a full sweep once. you should see a good healthy squirt of fuel. if you see this squirt your car should just start up. if its hard to start with that squirt. your carb is not your problem. it could be excesive carbon build up on the vavles wich asorbs the fuel at first till it becomes saturated or it could be weak spark from a bad ignition coil or the timeing could be way off.
guess you have never syphoned gas from a tank to a can on the ground. Gas goes up hill thru the hose and then downhill to the can. The carb is also higher in elevation than the fuel tank. just my opinion though
there is no tube in the float bowl for the fuel to siphon up and out of the fuel bowl. it enters through the top of the of the bowl and falls in to it.
Ditto, fuel cannot syphon back thru the needle/seat valve in the carb. I too think he's got an ignition problem. Got points? Or the fuel in the carb is evaporating. A sticking choke can also cause hard starts. If it is a fuel problem, it only gets worse, the more the spark plugs get saturated with fuel. If you're still running points ignition, that's the first thing needs to be changed.
Carb heats up an evaporates fuel in bowl. Bowl must refill so takes a bit to get it started. Problem solved. I promise.
i get a good flow of fuel when I depress the accelerator. I don't know nothing about the points so I'll have to look into that. Maybe I should do that conversion that everyone talks about.
a weak ignition spark can make it very hard to start. points are only good if the is a eltro magnetic pulse. then you will have the only car thats driveable. do the conversion. pertronics is the simplest way to get rid of them. there are lots of expensive ways that you only need to consider if you plan on really pushing the power limits of the motor with nitrous or boost.
Why? Both my Comet GT & Maverick Grabber Clone were somewhat troublesome starters as the weather got colder problem solved with new choke.
IT sounds like the fuel in the carb is evaporating and the fuel in the line is bleeding back into the tank or at least away from the fuel pump. With the bowl dry and no fuel at the pump it takes a while for fuel to get to the carb and then into the engine. All normal for older cars without anti syphon fuel systems. A new fuel pump might cure the problem but it would be a temporary fix at best. A phenolic (plastic) spacer between the carb and manifold would help too because it would insulate the carb from manifold heat. Installing a one-way check valve between the pump and carb would work best and they are available in the fitting supply areas of most good parts stores.
