Fun with troubleshooting leanness (and 5th gear cruising temps) |
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Fun with troubleshooting leanness (and 5th gear cruising temps) |
emerygt350 |
Mar 15 2024, 03:37 PM
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#1
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Advanced Member Group: Members Posts: 2,144 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
So I have been playing with adding resistance to the cht to bump my mixture. Messing with the mps was not getting me to where I wanted to be I wanted something a little more global. Anyway, bought a 10 dollar Bluetooth relay. Set it up so one channel was clean the other had 50ohms resistance in it. As I am driving I can switch back and forth and watch the results on the cht and AFR. 50 is really working well (this is all in addition to my 250ohm found on 73s). Now I have added another 20 ohms to the alternate so the relay will switch between 50 and 70. It ain't pretty but it's only for troubleshooting.
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Ishley |
Mar 15 2024, 04:37 PM
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#2
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Member Group: Members Posts: 106 Joined: 4-October 21 From: Clarendon Hills Il Member No.: 25,957 Region Association: Upper MidWest |
I'm struggling with the same issues. I have a 270ohm and a 50 ohm in mine right now and I'm tweaking the MPS to get the AFR readings where I need them. I circle a few blocks in the neighborhood and I can tell pretty quick if I'm heading in the right direction. I have an AFR guage installed and an O2 sensor in the exhaust.
I'm running a new rebuilt 2056 with a webcam 73. Today I went and reset the timing... and my engine seems to have lost some power and zip. I'm going to go back and reset my timing in the morning. I'm also running a 123 Distributor. It's been a struggle. After everything gets good and warmed up.... I go lean. The resistors have helped....but I'm not totally confident I'm there yet. I'm even more concerned about what happens in really hot weather. |
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