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59AB hard start, some days As far as I can tell, and have been told, my '47 59AB, is factory correct. If I start it everyday or every other day, all I have to do is pull the choke out about 1/4 inch, pump the gas about 5 times and it starts right up. If it sits much longer, I have to pour some gas in the carb, and pump the gas while trying to get it to start. It has even taken as much cranking as to run the battery down. I will also say it is richer than 3 feet up a bull's backside!
I'm not a flathead guy, and at a loss as to what could be the cause of this problem. Could it be the carb, the fuel pump? Is it gravity draining back to the tank? I appreciate the advice! |
Re: 59AB hard start, some days Your fuel pump is loosing its prime and draining back to the tank. I would look into your fuel pump.
Vic |
Re: 59AB hard start, some days Send your carburetor to CharlieNY and let him work his magic on it for you as well. I send a signed check for him with my stuff and he emails me and lets me know what the deal is and its on it way back ready to run!!!! YOU might even send your fuel pump as well and let him do that too.....cheap insurance and you will be thrilled with the results
Charlie Schwendler 5845 Cole Road Orchard Park NY 14127 |
Re: 59AB hard start, some days Right on Vic.
Make your life easier and install an electric fuel pump back near your fuel tank. It may not be," correct", but it sure works great. You can turn it off once the manual fuel pump regains its prime. |
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Re: 59AB hard start, some days My bet is.......once Charlie does your carburetor and fuel pump and you install them nice and tightly, that will eliminate the need for post #4 - with no intended offense to 47Topless
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1/4 inch choke pull is totally insufficient. Pull choke fully closed until engine fires, then immediately adjust choke to where engine is happy. After sitting for a time, gas in carb evaporates so pumping the pedal doesn't do anything. Need to crank a while to refill the carb. Full choke will help. You should have a glass bowl fuel pump. Do you see it full of gasoline? If so, you have gas to the fuel pump, just needs to push some to fill the carb. |
Re: 59AB hard start, some days Kelly, I have Charlie carbs, fuel pumps and distributors on my 42,46, and 48 cars. The 48 was always a hard starter if it sat even priming it with the backup electric fuel pump. One day fighting it I physically checked to see if the choke was working and it wasn't. Ended up having to do some adjustment on the choke cable assembly. I think it was Mike Kubarth that mentioned to leave the choke out when the car is not running. I did that and it seems to slow down the evaporation. I have turned it over with the ignition switch off to pump some fuel to the carburetor and then turn the switch on and it fires. On cold start I pull the choke all the way out, one pump of the gas pedal and once running push the choke in to where the engine smooths out. There's a sweet spot in that procedure which you'll figure out after a while.
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Re: 59AB hard start, some days I'm not opposed to sending one or both to him, I can for sure see value in having someone experienced do the carb, but isn't the fuel pump easily rebuilt?
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Re: 59AB hard start, some days Just pull your choke out all the way and after it starts adjust it. the choke is for STARTING Gary
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Re: 59AB hard start, some days If the power valve diaphragm is leaking it can drain he fuel bowl and make the engine run rich too
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If you can pressure check them after rebuilding and adjust if too low or too high, go for it for sure. |
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Tim X2.......OH and make sure it has good clean passages |
Re: 59AB hard start, some days I don't see any reason to send the carb out to rebuild it when you can do it yourself. I rebuilt carbs as a professional mechanic for 30-years. These early carbs are as simple as a carb can get. The main thing is to spray into every orifice and make sure all the ports are clear, the float is set correctly, and the air fuel is adjusted properly. When they were new, they were started and used every day, so they never had the chance for the carb to dry out.
Let the car sit for a few days and don't try to start it. The first thing you want to do is pull the air cleaner and look down the carb and see that the accelerator pump is spraying fuel. That will tell you if the fuel evaporated out of it or maybe the accelerator pump is bad and it's not spraying. Do not turn the ignition on or disable the engine so it will not start. Then I'd pull the line off of the carb and put into a glass jar and crank it to see how long it would take to fill up the carb cranking it. Do it outside and be very careful not to burn your car to ground while testing fuel issues. If it takes a while to pump fuel into the jar than I'd start looking at something related to the pump. I see a lot of the fuel pump stands that are warped "a lot" at the bases where they bolt to the intake. That warpage cuts down on the amount of travel the fuel pump has and might be why its has to crank so long to fill up the carb. Make sure the rubber hoses are new between the engine and the tank. I use fuel injection hose because it will last a long-long time. |
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Re: 59AB hard start, some days don't know what happened on post #15. Tom.
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Re: 59AB hard start, some days post number has it right. elect. pump with a on off switch when the car sits just turn it on for a short time .todays fuels are the cause of this. when you shut the cae after use its hot causing the fuel to evverote.put the elect. pump on you will be glad you did
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Charlie gets my vote. Good guy that does very good work at a reasonable price. |
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