One MFI bank richer than other-

[G69]

What would cause the driver's side bank (123) of the engine to run a little leaner than the passenger side (456)?

Is it worth worrying about if the car runs well?

[Chuck Miller]

All of mine look like the leaner ones... which look good to me

I do a major service once a year, with that one of the last steps is I dial in the air correction on the stacks with a universal synchronizer so they read the same all across... They all start pretty close, but just a little here and there brings all in at the same reading...

My .02

Let the experts chime in....

[edmayo]

I'd start with linkage rod lengths. Pop off the linkage rod from the cross bar, it should pop back on without ANY pretension. Then check each link to each throttle plate arm, same thing,,,NO pretension.

[G69]

Thanks- All stacks are very close to equal with the synchronizer at idle. And the linkage rods are set with no pretension.

The one thing that was curious to me setting the linkages up was the throttle valve push rods are more different in length (6.3mm) than spec (5mm) to get them to have no pretension.

I went back and found that I wasn't rotating the linkage arm the correct direction- I now have a 3mm spec.

I cleaned and swapped the spark plugs bank to bank and I'll take a ride later today and see if they agree more.

Thanks!

[G69]

All good- After some limited mixed driving the Right hand bank looks good too.

Thanks!


Now that I'm caught up I'm really ready to burn some asphalt!

[Chuck Miller]

Outstanding !!! …. Go out and drive that thing....

BTW- Those look like very cool Carello seal beams... yes?

Cheers,
cm

[savagejayj]

G69, what color is your car?

[Arne]

BTW- Those look like very cool Carello seal beams... yes?

Cibié BOBI - an early attempt to make a DOT-legal H4 light. Similar output to Cibié Z-Beams.

[Chuck Miller]

Got it... thanks Arne

[G69]

I call it Tangerine.