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Username Post: Frustrating no-start, no-restart issue        (Topic#355626)
bajones238 
"7th Year" Gold Supporting Member
Posts: 410
bajones238
Loc: South Carolina
Reg: 06-19-11
03-15-19 10:39 AM - Post#2762148    

I have a 1953 3100 ½ ton truck with its original 216 engine. Carburetor is a Rochester “B”, also original to the truck, with the thicker top flange first introduced in the 1952 model year. The truck will not start unless I either use starting fluid (which I don’t like to do) or manually fill the float bowl with fuel. With fuel or ether, it starts right up, and runs great. This condition exists when the truck is cold, as well as when it has been run but has been sitting for any amount of time.

I have read up on the “usual” issues with these things, and have addressed them as follows:

Starter. Spins pretty well with an Optima 6-volt battery providing juice.

Starter cables. Heavy ("0" gauge). Custom made from welding cable.

Timing. I have it set per spec, to the point that it neither bogs nor spark-rattles.

Carburetor. Rebuilt by the premier Rochester specialist in the VCCA. Phenolic spacer is installed. Mixture adjusted with exhaust gas meter.

Fuel. I have been using strictly non-ethanol gas since I put the truck together, about 5 years ago.

Manifold heat valve. I have it wired shut, i.e. no hot air from exhaust manifold toward intake.

Running temperature. Temp gauge stays at 180, as it always has.

I can’t believe these trucks acted like this when they were new – otherwise, Chevrolet couldn’t have sold as many as they did in the 1950s.

Any ideas? I’ve been working on Chevrolets for 40 years, but never one this old, and it has me stumped. I would be grateful for any help.


1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


Edited by bajones238 on 03-15-19 11:51 AM. Reason for edit: No reason given.

 


Shepherd 
Frequent Contributor
Posts: 1683

Loc: Lake George, NY
Reg: 11-11-15
03-15-19 01:10 PM - Post#2762152    
    In response to bajones238

Does the accelerator pump squirt when this occurs? Also, pull the carb, set it on the bench atop some newspaper, see if it leaks fuel over night.



 
bajones238 
"7th Year" Gold Supporting Member
Posts: 410
bajones238
Loc: South Carolina
Reg: 06-19-11
03-15-19 02:22 PM - Post#2762155    
    In response to Shepherd

Thanks for getting back to me. Accelerator pump works (when there is fuel in the bowl). I will pull carb & check for leakdown. Your post makes me wonder if fuel is siphoning back to the fuel pump - glass bowl is completely full.

1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


 
Shepherd 
Frequent Contributor
Posts: 1683

Loc: Lake George, NY
Reg: 11-11-15
03-15-19 04:48 PM - Post#2762162    
    In response to bajones238

if the fuel level in the bowl is below the needle and seat, siphoning shouldn't occur. Take the carb top off, fill it up and see if it leaking down somewhere overtime. Careful with fuel though, maybe alcohol is safer.



 
Ray P W 
Contributor
Posts: 380

Reg: 09-30-15
03-16-19 10:18 AM - Post#2762232    
    In response to Shepherd

bajones,

Even with the float bowl completely empty it should fill back up with engine cranking unless there is a problem with the fuel pump.

I drive my restored '36 Chevy pickup only every couple of weeks and each time the gas is evaporated out of the fuel bowl. Then it refills from engine cranking and the engine starts.

Ray W



 
bajones238 
"7th Year" Gold Supporting Member
Posts: 410
bajones238
Loc: South Carolina
Reg: 06-19-11
03-16-19 12:27 PM - Post#2762238    
    In response to Ray P W

Good suggestions all, I will investigate and advise.

1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


 


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