wp29p4a
Forum Regular
MY 1974 se
Posts: 376 
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Post by wp29p4a on Apr 30, 2012 20:27:04 GMT -5
I was curious. when you start your Charger after sitting for more that a week. Do you give it one pump to prime it and set the choke and it starts right up? Or do you have to pump it several times before you start it?
Mine takes about three pumps before it wants to start.
Not sure if the 500 ci or the 5000' elevation has anything to do with it?
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Deleted
Deleted Member
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Post by Deleted on Apr 30, 2012 20:44:28 GMT -5
4-5 pumps. With ethanol gas, it's to be expected.
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Deleted
Deleted Member
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Post by Deleted on May 1, 2012 6:05:36 GMT -5
With my new carb, thanks Tom, just a slight touch to set the choke and it fires right up. This is after 3 or 4 days.
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DynoDave
CO-ADMINISTRATOR
Motown Mopar-Wizard
Posts: 11,169
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Post by DynoDave on May 1, 2012 6:43:38 GMT -5
I've always found this to vary with the different carbed cars I've owned over the years (from car to car). The old slant 6 and it's Holley 1bbl. were one kick in the summer, 2 kick in the winter. Probably the best (most predictable) carbed car I've ever owned.
The TQ and Q-jet carbs (and I'm sure others designs as well) used assorted devices (steel plugs, o-ring sealed cups) to close off passages that were part of the machining process to make the carb. These can sometimes leak, allowing fuel to slowly drain from the bowl after sitting, which leads to extended crank times when you have a mechanical fuel pump. And as Tom mentions, gas with an ethanol blend is more prone to evaporation when sitting.
Now my buddies 4 bbl, no choke, warmed over 350....that car you never knew what it was going to want. PITA in my opinion. Same with my neighbors '39 Plymouth when it had a Demon carb on it...always hard to start...and not consistent. Caught fire on him once while starting, and damn near took the car and house with it. That was the end of the Demon. He replaced it the next day.
To me consistency is the key. I don't care what the ritual is to get the car started, as long as it behaves relatively the same from start to start. In other words, as long as it always starts after sitting, regardless of the routine, and assuming that routine is not ridiculous in same way (excessive cracking that damages the starter or drains the battery, excessive/easy flooding, etc.), then I'm good to go.
As the human, you have the only on-board computer. Once you get the feel of what the car wants, and listening to cranking speed, the sounds of the engine catching/coughing, the time the engine has spent cranking, etc., you should be able to provide the correct inputs for consistent starting.
#Twocents#
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mrhws
Been Here A While
Posts: 784
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Post by mrhws on May 1, 2012 7:43:57 GMT -5
My '74, generally 3 or 4 pumps after sitting a couple weeks. The '73 is a different story. It sits longer between starts. 5 pumps, crank. 3 pumps, crank and maybe it will fire off.
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Post by JimmyB on May 2, 2012 7:41:44 GMT -5
Several pumps for my 74, but I'm hoping it'll improve with use - it doesn't get started much at the moment.
When I get it back, one of the 'to do list' items is to refresh various ignition parts, which might help. And at some point the two-barrel carb has to go ...
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Post by dogbert22 on May 3, 2012 14:24:53 GMT -5
Several pumps to floor (to make sure the choke plate kicks over for the first pump at least. Crank & Pray....  |
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Post by dustncharge on May 13, 2012 12:04:12 GMT -5
Mine is a 440 w/a 4BBL Edel. I tend to give it 5 pumps for good luck if its been sitting for more than a day or two. It'll normally start without the pumps, but it isn't as happy or eager to start w/out the pumpin. Nothing but premium fuel for my Charger, whats a dollar between friends anyways?
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