Air/Fuel ratio, is there a quick answer? |
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Air/Fuel ratio, is there a quick answer? |
malcolm2 |
Feb 5 2017, 05:50 PM
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#1
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
OK, I have been tinkering with the new-to-me AFM on my 1911cc engine all weekend. I have adjusted the spring about 20 teeth CCW to get to this point.
I have been using an A/F sensor and gauge. can someone tell me, or direct me to a chart/table of what A/F I should be shooting for on my daily driver. The last adjustment of the CO screw has left me here: I have always had a strange idle situation, so lets ignore that for now. any normal adjustments to reduce the idle at normal operating temp eventually stall the car. A problem for another post. (IMG:style_emoticons/default/blink.gif) the idle is high.... at 1200 the A/F is a smooth 12.2. I found a long hill and drove up it at about 3800 rpm and the A/F was 12.5. thoughts? |
djway |
Feb 8 2017, 10:11 PM
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#2
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Senior Member Group: Members Posts: 787 Joined: 16-October 15 From: Riverside Member No.: 19,266 Region Association: Southern California |
When I set up my L jet that had been horribly messed up, after warming up the car I jumped on the freeway and ran at 3000rpm. WOT was running way to rich as was AF ratio at 3k. I would shoot down an offramp, tighten the spring and jump back on the freeway. When I finally got it to run at 15.8 at 3k the WOT was right where it should be. Popped the lid back on the AFM and the only problem I have had since is that when really cold I need to crack the throttle just a bit to start. The motor is old and a bit low on compression but cruises like a dream.
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