The Stovebolt Site Forums The Shop Area Engine Shop Rebuilt Carb Question

I recently put a rebuilt in my truck that I bought from a reputable shop in town. After I installed it, the truck hesitates when the gas pedal is first pushed.

It also feels like its being held back when accelerating. The bowl gasket is a little moist on the outside with gas.

I followed the directions enclosed by flushing out the fuel line and replacing the fuel filter. The directions said the carb was ready to install.

Is it a rule of thumb to check the float settings when you buy a rebuilt carburetor? Sorry if this is a dumb question. I don’t think my timing or any other settings are off.

Mark

Sounds like the float is too high. I have found that reman carbs are never "ready to install". Recheck the float level and the idle settings too. Checking the timing wouldn't hurt either, mine didm the same thing, it was a combination of too high float setting and retarded timing.

Did you use a new carb-to-insulator-block gasket?

Did you make sure the gasket had a cutout that was aligned with the vacuum hole in the base of the carb and the indentation in the insulator block?

That makes me feel a little better. I'll check the float and settings and see what happens.

Could be the timing is off too. I always have a hard time seeing the ball on the flywheel. I usually end up going with whether it sounds right over finding the ball to line up.

Thanks.

Gaskets were lined up correctly with the insulator. But I'll recheck that when I pull the carb. Thanks.

Put a liitle white paint, flat preferred, on the pointer. You'll be able to see it much better. If you can turn the engine over until the ball is visable, you can put a dab of paint on it as well.

And the older your eyes get, the more you will appreciate Bill's tip

Jon.

I like your white paint idea. My eyes aren't what they used to be. :rolleyes:

Mark

I went the rebuilt way with my trusty Rochester...it leaked, hesitated...time for a rebuilt....the Champion rebuilt, right out of the blister pack on the parts house counter had excessive wear in the throttle shaft and the choke mechanism was installed incorrectly so the choke was totally inoperative. At $109. + tax it never left the counter.

I'd heard of Tom Langdon's Holley/Weber 5200 conversion and at $65. for the rebuilt carb, $15. for the adaptor/ $35. for the linkage,$12. for the 12v electric choke it sounded like a viable alternative. That's $127., no core charge and I could talk to a real live person if I encountered problems. And Tom can talk!!!!!!!

The install was rudementary...the linkage went on like the picture showed and the carb performs FLAWLESSLY. Good idle, no flat spots and I don't even miss the smell of gas fumes from my trusty old Rochester.

When you get tired of fiddling with you carb problems and want to really enjoy driving your truck.....the Holley/Weber 5200 gives you the bang for the buck. Hope this helps!

Dave

The rebuilt leaks slightly at the gasket between the airhorn and bowl. When I say leak, I mean gas moisture and smell on the outside of the carb. Its not a big leak.

Is it possible that the gasket will eventually seal?

I’ve checked the float, the gasket etc. This may be a “live and learn” situation regarding rebuilt Rochester Bs.

I'm about ready to rebuild the old one myself since I never turned it in for the core charge.

Mark

Mark,

I had a bad carb on my 71 chevy. It was missing most of the choke parts and ran bad. I contacted a place I found on the web ( recarbco.com ) and ordered a carb from them. That was the first carb I have ever put on that did not need any adjustment. The truck runs like a champ now. Their prices are good as well.

I've heard of Recarbco. I would just like to get back out on the road. I hate carb problems.

Thanks.

That was good thinking not turning in your old carb. Half the over the counter rebuilds are not right. You can probably o-haul it yourself & return the other one.