Stroker afr what should it be

Performance mods and Advanced Stroker discussion.
Jeepking1995
Where's the "any" key?
Where's the "any" key?
Posts: 21
Joined: April 24th, 2023, 5:11 pm
Stroker Displacement: 4.6
Vehicle Year: 1993
Vehicle Make: Jeep
Vehicle Model: Yj

Stroker afr what should it be

Post by Jeepking1995 »

I installed a cam in my stroker and timing chain, at first it ran very lean my wideband was pegged full lean, wouldn't even register on the gauge, and got a lean code while driving, would stall if i gave it throttle unless i waited2 minutes, I suspect my cam timing was off, with the crank pulley at 0 degrees my distributor rotor was pointing at 6 o clock, I decided to remove the timing chain and rotate the cam back until the distributor got to where it was supposed to be at the 530 position, started the jeep, wideband was reading very rich around 9, I suspect it's the after start enrichment, after that it goes back to fully lean and pegged on the gauge, at probably 3/4 throttle it reads 12.5 on the afr gauge, i know this is right too, I'm not sure how open loop and closed loop works but shouldn't I see 14.7 at idle, I have not driven the jeep yet so I don't know how it will act under load or if it will throw a check engine light, got late tonight, I'm ordering some cam degree tools
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Cheromaniac
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I live here
Posts: 3292
Joined: March 8th, 2008, 12:58 pm
Stroker Displacement: 4563cc
Vehicle Year: 1992
Vehicle Make: Jeep
Vehicle Model: Cherokee
Location: Cyprus

Re: Stroker afr what should it be

Post by Cheromaniac »

Correct the cam timing first, then clock the distributor to correctly synch the injector pulse, and go from there.
1992 XJ 4.6L Poor Man's Stroker - 5MT - 246hp & 311lbft (crank) - Sold :cry:
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