Failed CO E-check, need some ideas to pass, 76 D-jet, high HCs and COs |
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Failed CO E-check, need some ideas to pass, 76 D-jet, high HCs and COs |
newto914s |
Dec 2 2008, 08:47 PM
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#1
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
I'm thinking of registering my 914 in Colorado, cars been running better than I ever remember, but I failed my e-check today. Visual inspection was fine, needless to say they couldn't fine anything on the car, but that also means they didn't see I have no smog pump or catalytic converter. I even passed on CO2.
But my HCs were 1825 at 2500rpms and 1047 at idle, 600 is the limit. And my COs were 11.7 at 2500rpms and 8.19 at idle, 3.5 is the limit. About the car. It's a 2056 running D-jet. I turned up the fuel pressure to compensate for the extra displacement, but I think that's how I shot myself in the foot. I'm also using SirAndy's old MPS. It's a 1.7 that he tweeked to run his old 1.8. My car loves it though. My car ran like shit with the 2L MPS, and it held vacuum and everything. I think that covers it. I'm thinking of turning down the Fuel pressure, leaning out the idle on the ECU and crossing my fingers. Any other ideas? Do those numbers seem way to far off to be cause by fuel pressure? Thanks guys. Samson |
orange914 |
Dec 2 2008, 11:34 PM
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#2
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
I'm thinking of registering my 914 in Colorado, cars been running better than I ever remember, but I failed my e-check today. Visual inspection was fine, needless to say they couldn't fine anything on the car, but that also means they didn't see I have no smog pump or catalytic converter. as a rule I even passed on CO2. But my HCs were 1825 at 2500rpms and 1047 at idle, 600 is the limit. And my COs were 11.7 at 2500rpms and 8.19 at idle, 3.5 is the limit. About the car. It's a 2056 running D-jet. I turned up the fuel pressure to compensate for the extra displacement, i would lean out the fuel pressure to 29 lb.s, set the lean ecu screw back (if it's been fully fattened). this will most likely drive h.c.'s way up but bring c,o. to limits. then retarding timing from stock setting (allowed in ca. testing), this will reduce h.c.'s... if it's still not within spec.s but fairly close a cat will definately clean the rest up. the cars going to run like shit but like i said these motors where NOT designed to run well with in these spec.'s... definately reset it all after the smog test! I think Do those numbers seem way to far off to be cause by fuel pressure Thanks guys. Samson i've heard these injectors dont atomaize well over 30 psi, that could be a huge contributing factor of not only to rich but globs of unburnt fuel do you have a sniffer avalible for use will you tweak these settings? mike |
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