dizzy replaced now carb problems?

[Anonymous]

I posted a few weeks ago about my 66 with a SCV equipped carb having the wrong dizzy. I bought a re-man load-a-matic, dropped in a new petronix, set the timing at 12 BTDC, adjusted idle car ran great, life was good...for a few days.

Friday I was driving along and car started to cut out and then died. Gas was pouring out of the carb, I figured the float was hung up. (4 year old Pony Carb). Tapped on carb liberally, quite leaking gas but now the car will not idle at all. If you stay on the throttle it will stay smooth then stumble, smooth then stumble Lots of black smoke out of the tailpape and out the manifold donute . I did notice that the manifold was quite loose at the donut, tightened that no more smoke from the donut. Fuel filter is not clogged, where do I go next?

Possible heat soak from loose manifold?
Accelerator pump?
Other?
Float problem

thanks for any suggestions or help!

 

[Anonymous]

black smoke is a rich condition....check the choke...maybe the spring got unsprung?!?!

I am certainly NOT a carb expert...nor did I saty at a Holiday Inn last night...

 

[Anonymous]

choke should not be an issue. I have the choke by passed with a zip tie to hold the butterfly in the middle.

 

[mustang652]

Had the same problem four months ago. Six year old Pony Carb rebuild started flooding big time, gasoline all over the place. As I was pressed for time to have it ready for a show, I took it to local shop. Four rebuilt Autolite carbs later and a couple hundred additionally in labor before the mechanic got it running. The mechanic that worked on the car told me that since they did not do inhouse rebuilds, the shop owner's parts man was ordering the carbs from a local parts store, I think it was an Auto Zone, and that he wasn't just real impressed with the quality. I gave up on the local part store rebuilds six years ago when I went through three rebuilt carbs myself before I got on that would work from Checker Auto. Hind sight being 20/20 I should have sent my spare carb to Pony Carbs for exchange, the overall cost even with shipping would have been cheaper by at least $150. If you use local parts stores, I hope you have better luck than I have had.

 

[Anonymous]

Usually the problem you describe is trash in the float needle area. Remove top of carb look under needle that hangs on the short end of the float arm. A tiny piece of trash gets between needle and seat causeing poor seal--this is the only thing keeping your carb from overfilling. Rapping the side will sometimes dislodge it curing the problem but sometimes just makes it collapse a little causeing less problem but still basically the same. After replaceing a carb often trash will get in that part of the system especially if you have any rubber fuel lines. Sometimes the float needle just goes bad--it is usually a brass piece with a rubber tip. Gas pushes it up opening the passage and the float pushes it back down when bowl fills up stopping the flow.
Good luck Dan

 

[jamyers]

You're flooding big time.

By now, I'd pull the plugs and check to make sure they're not completely fouled/crudded up.

Then double-check the rest of the ignition, just to make sure.

Danwagon's right - Sounds like the float is either hanging, or there's some trash in the inlet needle valve. Take the top off the carb and look around. Get some spray carb cleaner, and flush out every hole you can see (watch out - it's nasty in your eyes and on paint). Be sure the fuel inlet is clean, and there is NO dirt/trash in the bowl.

Probably time to change fuel filters.

 

[addo]

Just for the heck of it, try swapping in a set of points.

 

[mugsy]

Don't know what type of float that Pony uses (bets its cheap crap) but floats do stop floating. Sounds like it either the float has a leak (if its hollow metal) or is saturated (if its foam).

Personally floats are cheap, so I would replace it regardless if I opened the carb up. Just make sure the level is set correctly, it does have a big impact on the carb's performance.

tanx,
Mugsy 8)

 

[Anonymous]

Just for the heck of it, try swapping in a set of points.

Addo, That's the first thing I did. I've already been burned by the petronix once. Plugs are black as night. took carb apart, also siphoned a couple of gallons of fuel out of the 40 year old tank, good bit of trash in both.

I've got a new tank that's been sitting in my garage for about a year now, just haven't got around to putting in. I guess it's time to do that and go through the carb. I'll report back. May take a while, this pesky job of mine gets in the way of important stuff like woring on my car. Thanks guys for all the help!