2018 Hellcat carb and engine question

grumpyunk · 05-03-2021, 10:39 AM

Put everything back to the way it was when it last ran, even if it was not perfect.

Change ONE thing at a time. When you make multiple changes, please tell me which one was workging and which one caused it to stall. Or, which one you should keep and which to back off? It is difficult enough to realize the results of one change, given temperature, humidity, and so on have effects varying from day to day and even hour to hour. Ir-reproduceable ... can't make it do that again... that's what you get with multiple changes and atmospheric/ambient changes occurring.
The plugs looked a little rich to me. I can't keep track of your jetting, your needle setting and your idle mix adjustment, only you can. To know, or at least get ballpark, you need to start with known settings, note acceleration/stumble/idle/startup results, figure where you need change, change, and note the results. Just throwing jets and adjustments hoping to hit upon the 'best results' is not gonna happen, unless you are very lucky(if you get there, buy a Lotto ticket quickly...), so the plodding one-step-at-a-time is the only known process.
I have better things to do than do multiple acceleration and top speed runs to get the finest tune. I want easy starting, good stable idle, acceleration without stumble and smooth high speed running. Get me that, and a spark plug report showing I am in the ballpark, and I'm happy.
tom

05-03-2021, 10:39 AM	#13
grumpyunk Join Date: Jul 2018 Location: nw of atlanta Posts: 169	Put everything back to the way it was when it last ran, even if it was not perfect. Change ONE thing at a time. When you make multiple changes, please tell me which one was workging and which one caused it to stall. Or, which one you should keep and which to back off? It is difficult enough to realize the results of one change, given temperature, humidity, and so on have effects varying from day to day and even hour to hour. Ir-reproduceable ... can't make it do that again... that's what you get with multiple changes and atmospheric/ambient changes occurring. The plugs looked a little rich to me. I can't keep track of your jetting, your needle setting and your idle mix adjustment, only you can. To know, or at least get ballpark, you need to start with known settings, note acceleration/stumble/idle/startup results, figure where you need change, change, and note the results. Just throwing jets and adjustments hoping to hit upon the 'best results' is not gonna happen, unless you are very lucky(if you get there, buy a Lotto ticket quickly...), so the plodding one-step-at-a-time is the only known process. I have better things to do than do multiple acceleration and top speed runs to get the finest tune. I want easy starting, good stable idle, acceleration without stumble and smooth high speed running. Get me that, and a spark plug report showing I am in the ballpark, and I'm happy. tom __________________ vertical and above ground - my daily goal
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