BahN

hey guys, I just strapped on a rebuilt E4ME from national carburetors, thing looks great, fired up just fine. The problem is, it dosnt see like the car has as much power as it use to. I adjusted the idle, and got that nicley sitting at 800rpm (smoothest). I have a cheap narrow band A/F gauge that i used to kinda get an "idea" for what it was doing (i know a narrow band isnt a tuning tool). Now the problem, it's running rich i believe. If you floor the car to 5.5k and let off, it'll backfire. I checked TPS voltage, and it's a tad high. 0.61v at idle, should be 0.50 according to my manual. Would that really make that big of a difference? Before i replaced the carb, i ran my old one without the TPS even plugged in (it was shot), and it never backfired. How do i adjust A/F at WOT/Any throttle at all? All i can see are my idle rev adjustment, and i have two idle rich/lean screws on the bottom front of the carb, one on each side. Any ideas? Thanks guy!

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naf

TPS voltage difference that small won't make much difference. The carb likely needs to be adjusted using a dwell meter or scan tool for proper IAB/dwell setting. There's some stickies on top that explain much of that. If you've got a dwell meter, or can get one, I can help walk you through it.

WOT is controlled primarily by the secondary rods/hangers and the air valve. There's a tech article here that provides some info.

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