emission failure - add cat ?, lets say ... |
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emission failure - add cat ?, lets say ... |
jimkelly |
Apr 20 2009, 03:24 PM
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#1
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
you fabbed up a set of he's thru a cat and then thru a muffler.
hypothetical - if the exhaust read 700 HC & 7.00 CO - what woud it read with cat? jim Attached image(s) |
jcd914 |
Apr 24 2009, 12:33 AM
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#2
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
I know I am jumping in late on this but I don't get it, why can't you just lean it out?
I just had my old RV in to get smog tested and it runs way cleaner than you're showing for yours. It is a 77 motor home on a 76 Chevy 1 ton van chassis with a 350 It has no cat, no EGR. It has Air injection & EVAP The only things non-stock are the MSD ignition and a mild "RV" cam. Specs as tested a 9:35 this morning: Idle CO -- 0.65% Idle HC -- 27ppm 2500rpm CO -- 0.12 2500rpm HC -- 20 California allows 3.0% CO & 300ppm HC at idle and 3.5% CO & 350ppm HC at 2500rpm What is with your engine that you can't get it idling cleaner? Good luck Jim |
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