Autolite 1100 float adjustment

78merKri6":2bv3o1fr said:
Sparky,

According toyour last post,looks as if you've got similar problems I've had. Iused to work on and modify carbs but this 1100 has to be a bear. There are orifices/passages inthe mainwell that are hard to get to or even see. If you remove main jet, you can see one with a flashlight. Another one is under a lead plug just beside the main jet. If I could post pictures it would be easier explained. At any rate, dont be afraid to remove the main jet to spray in there. If those passages are stopped, then one has to drill at lead plug and at small cup plug on side; then seal back up with fishing sinkers/epoxie after probing with fine wire,using compressed air.

I could go on,but perhaps another carb is just as good if you prefer.

Gary
Click to expand...

I spoke with the guy that rebuilt it and he thinks there may be something restricting the idle system. I think I am going to open it up pull out the jet and clean in there. I've got the cut away pictures in the manual so I now I know what channels I should be focusing on. He said I could send it back but I figure it can't hurt to try cleaning it one more time, and hopefully I can avoid wasting his time and shipping this more then I have too.

The only reason why I really dont want to have to rebuild another one is the time it takes to re-plate everything and clean it all up.
 
Let us know how you get on Sparky, I'd be interested, thanks.
What manual is it that you have with cutaway pictures??
Cheers :thumbup:
 
Well its working a whole lot better now. I pulled the jet and put a whole bottle of carb cleaner through the idle circuit, also pulled the SCV and cleaned that out well. Then I changed the idle mixture screw. I put it all back together and it runs a whole lot better now. Not nearly as smooth as the holly but at least I can get it to idle at a decent rpm without the choke on. I still need to test it some more but its looking up. Really not sure if it was changing the mixture screw or cleaning the circuit better but my guess is it was the circuit. The idle circuit is drilled into the main well just bellow the jet so I could get the straw on the carb cleaner right into it.

I have a ford shop manual for my car and it has a whole section on the autolite 1100 with cut away views that shows how air, fuel and vacuum move through the carb under the various operating conditions. Its very interesting to read even though I dont really understand half of it. Once he told me he thought the idle circuit was clogged I used that to figure out which holes were part of the idle circuit.
 
Right on,Sparky.

Some fuel additive/cleaner may finish it. Lucas comes to mind, but can't say what to recomend.

Drive it more, enjoy.

Gary
 
great thanks .. will get one of those then, didn't think it would go into that much detail.
I've got next week off so will be out and about in it a few times weather permitting!
happy motoring!
D
 
Hey Route--66--,

Do you have an air compressor with a blower nozzle? That will help you purge those small channels. You can also use those aerosol cans of compressed air for cleaning computers using the straw to reach the tight places. Sometimes the compressor nozzle is not fine enough. However, if you have the carb off the engine, you can drench the outside with WD40 and then use the compressor nozzle to blow it all back off, along with the dirt and excess oil. I do this on a newspaper in the garage instead of blowing against the wall in back of the workbench.
 
Ahhhhh NICE idea with the compressed air spray..
Mine is good on hot idle and not toooo bad on cold idle .. could be better .. but I'll leave it alone until it gets too lumpy ..
I will store the compressed air spray in me memory banks though .. nice idea cheers !:)
 
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