New rebuilt carb no start help

Cody_1948

Cody_1948

Senior Member
Howdy Guys,

Last week I was having trouble with my carb or carbs on my 226. As they where leaking. Anyways found a fresh rebuilt carburetor on eBay.So I picked it up. Well today I got it. Looks great and clean, I put it on my truck and check a few things, Had gas as I seen it shoot a shot out of the jet, Had a fully charged battery, And a tank full of gas. Go to turn it over and all it wants to do is roll over. With no start I then play with the screw and turn it out alittle, On the old carb about two turns is where is likes to be, still nothing, At this point I can't think of anything else. So I try the whole drop a little down the carb to help it fire. Still no start, I then take the carb off. soak up all of the unfired gas that is sitting in the exhaust manifold which wasn't to much, As I let that dry I spray a little starting fluid on the side walls of the carb, Still no fire, Then I take carb off, put the old leaky carb on do as I did with the new one I got. And every time the old carb would fire my truck up. I even took the old set screw and spring from the old carb and put it on the new carb. And even took both and filled both of the float bowls with gas, with only the hot fire from the distributor hooked up. Old carb fired, New one nothing......

Any ideals guys ??
 
Cody_1948 said:
Howdy Guys,

Last week I was having trouble with my carb or carbs on my 226. As they where leaking. Anyways found a fresh rebuilt carburetor on eBay.So I picked it up. Well today I got it. Looks great and clean, I put it on my truck and check a few things, Had gas as I seen it shoot a shot out of the jet, Had a fully charged battery, And a tank full of gas. Go to turn it over and all it wants to do is roll over. With no start I then play with the screw and turn it out alittle, On the old carb about two turns is where is likes to be, still nothing, At this point I can't think of anything else. So I try the whole drop a little down the carb to help it fire. Still no start, I then take the carb off. soak up all of the unfired gas that is sitting in the exhaust manifold which wasn't to much, As I let that dry I spray a little starting fluid on the side walls of the carb, Still no fire, Then I take carb off, put the old leaky carb on do as I did with the new one I got. And every time the old carb would fire my truck up. I even took the old set screw and spring from the old carb and put it on the new carb. And even took both and filled both of the float bowls with gas, with only the hot fire from the distributor hooked up. Old carb fired, New one nothing......

Any ideals guys ??
Click to expand...

Will the seller of the "rebuilt" carb give you your money back? You got screwed man.
 
My 2 cents .... When it comes to carb, fuel pump and ignition work, I stick with the several rebuilders that participate on the Ford forums. Never had a problem and I believe they stand behind their work.
 
Don't want to complicate the problem, but it seems maybe with all that gasoline and starter fluids, you should have at least get a backfire or pop or something? Is it possible there is no spark?
 
fourfords said:
Don't want to complicate the problem, but it seems maybe with all that gasoline and starter fluids, you should have at least get a backfire or pop or something? Is it possible there is no spark?
Click to expand...

Sir, I did check. I do have spark at the plugs and also check the coil.
 
Just because the old carb was happy with two full turns on the screws try turning the screws in all the way and back them out a half turn at a time and try starting with each adjustment. I had this problem with a new carb out of the box. It had to be really leaned down before it would start.
 
1938, Sir I turned it out I would turn it alittle and try it again I did untell I got the set screw all the way out, Even tried with out the set screw just for kicks..
 
As the "new" carb is in your hands it would probably be worth carefully dis-assembling it and making sure all the passages are clear and then carefully reassembling it. The gaskets should be able to be reused. The teardown should cost nothing.



Mart.
 
How many Carbs on the engine? What engine do you have? What style or Model Carb did you remove? What Model did you buy and are trying to install? Is the new Carb rebuilt and ready for service? What is wrong with the old Carb? If one Carb on the engine turn the "Idle mixture adjustment screws" both full in by hand and then unscrew each 3/4 of one turn leave them there until the engine is fired and warmed up, then adjust by slowly turning each screw for the smoothest idle.
 
Cody.
Perhaps the old carb some internal leaks which allowed it to operate
much richer so not much need for choking. I will suggest reinstalling the new carb
set the brass mixture screw 1 1/2 turns out from being seated. Get in the truck
pump the gas one time and pull the choke all the way out ( the choke does operate
I hope ). If you do have spark and gas shoots out the squirter that truck should
start.
Charlie ny
 
Is the needle and seat assembly jammed shut? Sounds like no gas is getting into the carb - but I can't explain no "pop" or backfire with gas poured into the carb or a shot of starting spray.
 
Truck has the 48/50 Ford L head 226, I'm running just a stock single barrel Ford carb 7ht, both carbs are the 7th,s Before I picked up this carb, I had four of them all 7ths But all leak, the two better ones I've rebuilt a few times, They both leak at the bottom out of the accelerator push rod housing( the shaft that you place the long spring on inside the carb.
 
Priming (pouring a little gas down the carb.) always works to get mine running. Is it possible that the spark plugs are wet with too much gas and not sparking?. I just fired up my 52 Merc last night after installing the repaired carburetor. It took a little cranking to refill the float chamber but it eventually started.
 
He says when he switches back to the original carb the truck runs...
So unless he's disconnecting something electrical and not plugging it back in when he changes the carb, the spark should not be changing back and forth.
 
I don't have answer but the other posters are not reading what you are saying:
QUOTE from first post:
Then I take carb off, put the old leaky carb on do as I did with the new one I got. And every time the old carb would fire my truck up. I even took the old set screw and spring from the old carb and put it on the new carb. And even took both and filled both of the float bowls with gas, with only the hot fire from the distributor hooked up. Old carb fired, New one nothing......
 
Maybe warm the engine up proper with your old carb and then put the rebuilt one on there, I'd fill the float bowl by hand. The engine will be warmed and have fuel in the cylinders, when you touch the button it should start and run on its own and then then new carb, if working at all, will take over and you can then tweak the idle.
While you have the new carb off, check 1 thing. I recall those carbs have a pin that locates the throttle plate to the throttle shaft, I have seen rebuilders get the pin in the wrong place when they replace the shaft, when the throttle plate is in the 'relaxed' position the throttle blades are actually open a good ways, entirely out of phase with the accelerator pump. In that condition if you actually get it running the engine would be racing and you are unable to roll the throttle back to close.
A quick check looking inside to confirm throttle blade is closed when it is in your hand is all you need to do.
 
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