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? |
Mark Henry |
Mar 27 2017, 05:17 PM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I'd say that plug is a tad hot, what number is it? Brand?
What are you running for total advance? I'm looking for beige or tan colour on the insulator, your insulator is too white. Or is it just the pic? Edit: could be my one monitor, on the other one it looks about right. As long as the insulator doesn't have a gloss finish appearance it should be correct. I run two monitors but one is better than the other. |
malcolm2 |
Mar 27 2017, 07:11 PM
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#3
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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 |
I'd say that plug is a tad hot, what number is it? Brand? What are you running for total advance? I'm looking for beige or tan colour on the insulator, your insulator is too white. Or is it just the pic? Edit: could be my one monitor, on the other one it looks about right. As long as the insulator doesn't have a gloss finish appearance it should be correct. I run two monitors but one is better than the other. They are NGK BR5ES. It was cylinder #2. Have not checked the timing in a while. I guess I should. I thought it was pretty white too. Don't remember seeing one that white. I figured that was a good thing. It was not shiney. Thanks |
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