mk's78

Hey there forum members,

I remember seeing threads/posts over the past few years concerning the use of JB-Weld or equivalent to seal the wells inside the Q-Jet..

Cannot locate them and would like to know the how & what it takes to accomplish the well sealing...

As usual any and all tips, references, procedures would be greatly appreciated...

mk's78

Mike

Big2Bird

After years of jungle fixes, I found these:
http://quadrajetparts.com/secondary-...lug-p-122.html
Going to install them this weekend.
I "think" they may be a cure.

JimLentz

Here is info on the problem.

Big2Bird

I wish I knew Cliff had that.

TimAT

Looks like a good fix. I'd be nervous as heck tapping that carb body. One little bind of the tap and it could be goodbye Charlie.
But I drilled and tapped my Muncie for a drain plug/temp sender. I sweated bullets thru that one too. Came out great.

Mooser

The tap and plug is certainly the answer. JB weld was an answer until the ethanol blends showed up.

Turns out that ethanol softens polyester epoxies including trusty ole JB weld. I looked into various sealants for ethanol fuels and there's not a lot out there that actually state they are resistant.

Phenol Novalac is if you can get it in reasonable qty's.
M

mk's78

Hi Big2Bird,

Was contemplating trying that fix myself......Would you be able to share the procedures on how you are actually going to do the install???

Have chatted with Cliff via several emails but I'd still like to know how and what it takes to make it a DIY project....

Thanks for your help...

mk's78

Mike

jnb5101

Are you sure that the wells are actually leaking? According to Lars and other experts, the notorious "leaking plugs" are more fiction than fact, especially in the more recent carbs.

jotto

That's exactly what I was thinking. Have you taken the carb off and actually checked if it's leaking?

7T1vette

If you have a '78 carb, it is highly unlikely that the 'wells' in the carb body will leak. To check, put fuel in the [loose] carb body and see it if leaks. If not, don't waste your time with the "fix".

mk's78

Good morning 7T1vette,

Hmmmm sounds like a good idea..and yes I am not completely sure that they leak..The C3 club members are the actual driving force for my concern/inquiry...

I could probably make an attempt to try your suggestion....May I assume that the carb has to be removed??? And could you explain what you mean by the (loose) carb body????

My guess would be to remove the carb, place it on a flat surface and pour in some gas......and again where exactly would the fuel be added???

I know it sounds like I am a complete dufus but when the forum offers help I make every attempt to follow through....

Thanks 7T1vette....Mike/mk's78

And is it is a 78 OE Q-jet...

7T1vette

Sorry, I was assuming that the carb was already off and apart.

You would need to remove the carb from the engine; and it would be best to remove the throttle plate assembly from the carb. That would expose the well plugs.

Since your carb is still on the car, I just wouldn't mess with it. The leaky well plug issue was early in the Q-Jet's life. Various things were done to try to resolve some frequency of plug leakage. But, by 1976, Rochester had put a solid fix in place. That's not to say that it's not possible for the well plugs on your carb to be leaking. But, the risk is probably so low, it wouldn't be worth removing it from the engine.

If you are having some 'odd' symptoms that you thought leaky well plugs might be causing, you should probably look elsewhere. If you post those symptoms, maybe we can offer some possible causes.