edelbrock idle mixture screws...???

[WFO]

on an edelbrock 1406 what would make one of the mixture screws have absolutely no effect on idle mixture?and i mean no effect,i took the screw completely out with the engine idling and it made no difference.the other screw responds exactly like it's supposed to,and creates a major vacuum leak if you take it out.


it's on a stocker 318(factory 360 4bbl intake,headers,msd-6al)in my '85 ramcharger.it was running great one minute,idled smooth as silk,snappy throttle response and decent gas mileage,then like flipping a switch the idle turned to crap and it's running soggy as hell. this carb has been on this truck for over a year without a hint of trouble,til now .


any help would be appreciated.

thanx,sean

[66Dart_GT]

How about a blockage in there somewhere, like in pluged up

[BakedMopar]

Originally posted by WFO
on an edelbrock 1406 what would make one of the mixture screws have absolutely no effect on idle mixture?and i mean no effect,i took the screw completely out with the engine idling and it made no difference

I have this exact problem! But yours was running good for a year so maybe like said earlier check to see if theres any thing blocking the idle circuts.

[cuda66273]

The Evil Chunk of Crud in the idle circuit.....

[rumblefish360]

Happened to me. Once cleared, all was normal.

[WFO]

yeah,i tried the easy fix ways(run a piece of wire down the passage and blow it out with carb cleaner)and it didn't fix it,so i guess it has to come apart .

thanx guys.

later,sean

[TimL]

Had the same proplem on a 1411 750, called Edelbrock tech-line, was told to do the following:
ck float level should be 3/8-7/16th, checked float level, was off a lot re set and it adjusts like it's supposed to, still trying to figure the logic in that.... but hey it worked for me


TimL






one NASTY 360 410 horse 76 cruiser, 71 allout Challenger 440 marine blck 525 cui, and my High school grad present 69 Super Bee 35k on it