Sold my 64 series 62 and bought  a 1962 cdv It has to be primed after sitting  installed two new airtec pumps wouldn't run at all put old pump back runs but still have orig problem . I have rebuilt carb, new tank and sending unit ,Got under car today and noticed rubber line from sending unit is looped very high over rear up to floor of car and back to fuel line running to pump ,Could that be my problem also if I decide to  go with an  electric pump would that line have to be lowered. Had someone else install tank so don't know location of original rubber hose. Thanks

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I would empty the tank and then replace the hoses. And did so two years ago on my car. 

But you sure its the fuel delivery? Maybe you should check if fuel is delivered to the carburator. If it is then your rebuilt carburator was not properly rebuilt or calibrated.

Has new hoses and tank and sending unit  concerned about height of hose leaving sending unit This is a non ac car

From your explination i think your rubber fuel line coming out of the gas tank is not following the correct path
It should not be going up and over anything
The hose should go from the tank sending unit to the metal fuel line behind the passengers side rocker pannels of the car - in the shortest direct distance between those two points
The stock mechanical fuel pump- Sucks Fuel to itself- so that path is making it more difficult to do that
Additional suction required to go up hill and over anything
There is no need --to empty the gas tank to replace or redirect the gas hoses as fuel will not be leaking out of it
You should be using rubber fuel line designed for ethanol fuel --if it applies in your area and fuel

Do check to see if your carbs accelerater pump is working correctly squirting fuel into the carb when you go from idle position to full open throttle with the air cleaner off and the engine off
The accelerator pump --primes the engine for start up when you push the gas peddle to the floor 3-5 times before a cold start up
If it is not priming the engine the engine will be difficult to start straining the starter and battery
Be sure to wait between cranking the engine not to overheat and damage those parts

If the accelerator pump is not working the carb was not rebuilt correctly

The accelerator pump issue was just addressed in a post a short time ago and that info is available by just scrolling down the posts here to locate it


The post title you are looking for when you scroll down the Dasboard ( home page )
Is : Fuel loss from carberator -- regarding accelerator pump info


First try redirecting you fuel line to see if that helps any fuel delivery problem then check the accelerator pump for working as it should

I am a very big fan of the 62 CDV's looks having owned a convert for a good number of years
My first early 60's Cadillac love affair
The 62 is my favorite look but the advancements in the 64 convertible ( 429 and turbo hyrdamatic trans ) made it the choice for me to keep forever ( being willed to my son )
The Turbo hydramatic behind the 429 is a thing of beauty
I have been on here daily since 2006 --and have never seen a turbo hydramatic that had to be rebuilt due to a failure
The trans is basicly bullet proof and used in many high performance racing applications For that same reason


I am not that familiar with the 1962 tank and its routing of lines … just know it has the same tank as 63/64 (except commercial chassis). On the 63/64 they route up and over to the right side as seen in my picture below.  You can see more pictures of my tank, etc. by clicking on Jason Gas Tank Project  Since you have a non-AC car you would have on the one fuel supply line instead of the 2 hoses on 63/64 AC cars.  These rubber hoses attached to a metal line under the RH rocker that go just inside the engine compartment where they revert to hoses again. I have never used a electric fuel pump (and not a fan of them), so someone else would have to provide best places to mount under or cars.  The vent pipe is easy to remove or install with tank on the car. Just jack rear of car up or better yet have on ramps to access.


Also not sure if your airtec is the aftermarket unibody, or original style fuel pump with the upper and lower halve, but there is a none problem with a lot of the rebuilt original style bumps where the valves are not staked and work loose and pump does not work. You can check it out at this link to article by Russ Austin: - Fuel Pump Problem - Valves Not Staked in Place

As far as fuel pumps I have run (and have sometimes sold) the Spectra Premium B1297MP fuel pump. I have never had this issue with them and not aware of any of my customers having that issue with that particular fuel pump. They had been hard to find the last year or so but see them listed on the AutoZone site for $44 (Click Here).  Note. Sometimes they will show something in stock but when you go to check out and they try to pull from inventory it shows out of stock.  I've probably had the same B1297MP on my 64 CDV for a decade and know if I needed another one it would be my 1st choice. 

Thanks for info Jason

I don't have the vent pipe .How important is it .I see you sell them. Can I install that with tank in place .

The vent pipe, called the "Fuel Tank Vent Extension" is needed to prevent spillage out the rear.  If your tank is full, I would expect it would be prone to slosh gas out the vent opening, especially on an incline. The vent pipe goes up above the tank then curves down to allow venting.  I can set you up with a VG vent pipe, short hose, and 2 correct Corbin hose Clamps for $30 and ship to US destinations for $10 for a total of $40. Email me at for payment and other details.

Does that sit in front of tank and how is it secured

It kooks like my vent pipe fell off after new tank was  installed found piece of hose on tank fitting .  Is there bracket that holds in place



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