Lean at wot
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Teching In
Joined: Jan 2020
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Lean at wot Alright guys I’m still fighting this lean issue With my 5.3 but it’s only happening when I’m in 2nd or in 3rd and I stab the throttle and I see on my afr gauge that it’s goes lean. When I go wot in 1st either it’s a roll or a dig the cars fine going through all the gears but when I try to roll in a higher gear it goes lean anyone have any advice? Thought it was fuel pump so replaced it and nothing accel pump is working good just not sure right now
Thread Starter
Teching In
Joined: Jan 2020
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im guessing they are I haven't checkek, even then I thought they were opening to fast where there wasn’t enough fuel for how fast the air was going through so I slowed them down and it is still doing the same thing. If they weren’t opening all the way wouldn’t that cause it to go rich?
10 Second Club
Joined: Aug 2010
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From: Harford Co. Maryland
What size jets ?
Also, when you go WOT there will be a high draw of air and it takes the fuel a second to catch up. So, if it's only a spike, that's normal, if it goes lean and doesn't recover, it could be jets or high speed air bleeds ? (to start)
Also, when you go WOT there will be a high draw of air and it takes the fuel a second to catch up. So, if it's only a spike, that's normal, if it goes lean and doesn't recover, it could be jets or high speed air bleeds ? (to start)
Thread Starter
Teching In
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primary jets are 72 and secondaries are 83 when I hit wot in first it will hit 12.9 at wot so I don’t think it could be Jets it has to do with something affecting the tip in
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Joined: Aug 2010
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From: Harford Co. Maryland
RPM Vs. airflow...
If you look close, this is a WOT run with a full manual TH350 and no lift shifts. You will see the lean spike on the shifts, along with a huge spike at the end of the run when I let off the gas. The AFR will change with the load on the motor even in a steady rpm state.
And just how lean are you seeing.
[img]
If you look close, this is a WOT run with a full manual TH350 and no lift shifts. You will see the lean spike on the shifts, along with a huge spike at the end of the run when I let off the gas. The AFR will change with the load on the motor even in a steady rpm state.
And just how lean are you seeing.
[img]
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Verdad Gallardo Thread Starter
Teching In
Joined: Jan 2020
Posts: 10
Likes: 0
RPM Vs. airflow...
If you look close, this is a WOT run with a full manual TH350 and no lift shifts. You will see the lean spike on the shifts, along with a huge spike at the end of the run when I let off the gas. The AFR will change with the load on the motor even in a steady rpm state.
And just how lean are you seeing.
If you look close, this is a WOT run with a full manual TH350 and no lift shifts. You will see the lean spike on the shifts, along with a huge spike at the end of the run when I let off the gas. The AFR will change with the load on the motor even in a steady rpm state.
And just how lean are you seeing.