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Thread: 4.6L Ford running rich on bank #2.

  1. #1

    Default 4.6L Ford running rich on bank #2.

    I have a Terminator X harness on a 4.6L Ford SOHC. When I first fired it up it ran great. After 6-7 miles it started missing and wouldn’t idle. I noticed the 5678 ignition driver was hot, 160°F. I called tech and they thought I had a bad ground issue. I checked all my grounds which are on new clean surfaces. The engine has good comression, at 175 psi. I hooked up a ground to the power tap connector and it quit making the ignition driver get hot. The engine ran poorly and wouldn’t idle without opening up the throttle to 3%. Black smoke and misfires on bank #2 still. The exhaust manifold temps on that bank was 400°F while the other bank was 150°F. I pulled plugs on bank #2 and they were black soot. The other side was clean. That tells me bank #2 is way retarded and super rich. I guess my question is why this could be happening after running perfectly after 20 minutes of warmup and 6-7 miles of driving. The engine ran fine in its donor car too. I’m lost.

  2. #2
    Join Date
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    Default

    Ensure the cam sensor is properly synced, and the Firing Order is entered correctly.

    Originally Posted by Danny Cabral
    Ignition Timing Cylinder Sequence Verification
    Ensure the Firing Order is entered correctly in Ignition Parameters (System ICF).
    Before the initial start, disconnect the fuel injector harness and verify
    at least, the first four cylinders in the firing order using a timing light.
    If your cylinders are firing in 90° intervals BUT in the wrong sequence,
    the coil harness is connected wrong (at the ECU or at the coil packs).
    Hopefully you have a fully degreed balancer or at least markings every 90°:
    1st cylinder, in firing order, should fire at 0° (or 15° - add whatever your cranking timing is)
    2nd cylinder, in firing order, should fire at 270° (or 285° - cranking timing added)
    3rd cylinder, in firing order, should fire at 180° (or 195° - cranking timing added)
    4th cylinder, in firing order, should fire at 90° (or 105° - cranking timing added)
    5th cylinder, in firing order, should fire at 0° (or 15° - cranking timing added)
    6th cylinder, in firing order, should fire at 270° (or 285° - cranking timing added)
    7th cylinder, in firing order, should fire at 180° (or 195° - cranking timing added)
    8th cylinder, in firing order, should fire at 90° (or 105° - cranking timing added)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

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