MustangWorks.com : Ford Forums - View Single Post - Failed Emissions test with carb'd '85

Dark Knight · 02-23-2002, 05:52 PM

I made it through the same test with the 80457s, AFR heads and 1.7's.... I'd say go get the cats checked 1st.. they make a big difference... also... if you used the wire on the stock carb for the choke, you'll have probs.. the stock carb uses 6v, the holleys need 12 to work... I just adjusted mine so the choke would kick off sooner...
might check the float level too... to high will cause it to run rich too...

I bet the cats are the prob though... easy for an exhaust shop to test... the pipe comming out of the cats will be hotter than the pipe going in...

02-23-2002, 05:52 PM	#10
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	I made it through the same test with the 80457s, AFR heads and 1.7's.... I'd say go get the cats checked 1st.. they make a big difference... also... if you used the wire on the stock carb for the choke, you'll have probs.. the stock carb uses 6v, the holleys need 12 to work... I just adjusted mine so the choke would kick off sooner... might check the float level too... to high will cause it to run rich too... I bet the cats are the prob though... easy for an exhaust shop to test... the pipe comming out of the cats will be hotter than the pipe going in... __________________ 84 convt,roller 302,AFR's, performer 3.55's, underdrives BBK shorties stock cam, 1.7's 13.58@102.84 and a '68 stang .. project 8 sec street car... 557 big block + N20 :-) http://members.cox.net/darkknight302/68nwrear.jpg