FI hesitation

[Luddite]

Hi all - So my 1981 was working great. I let it sit for a couple weeks in the hot Phoenix sun, and the battery died. New battery, starts right up - on 3 cylinders. Number 1 plug looked pretty good except for a little oil around the seal, but after reseating everything, 4 cylinders working. Idle is smooth, and engine runs fine at all RPMS. But accelerating from idle, even with no load, thing hesitates badly for about .2 seconds before kicking in.

Any thoughts would be appreciated...

[So Cal Mark]

sticky AFM or gummed up injectors

[azruss]

There is a shop in Tempe that rebuilt my injectors at a great price. even replaced a cracked tip. the guy apologized because he couldnt get one to test above 98%.

[Luddite]

Boy do I feel stupid. It turns out that the injector plug had fallen off the injector. Problem solved. But this leads me to a question: everything I've read here and in the L-Jetronic materials suggests that all 4 injectors fire at once. This problem seemed cylinder-specific. Are the injectors 11-per cylinder, or are they each providing 1/4 of the fuel for a given cylinder's combustion needs?

[rlux4]

As the throttle plate opens more air is allowed to pass through the AFM. The ECU calculates the amount of fuel to match this amount and times the firing of the injectors accordingly. So if an injector isn't opening you'd be getting 3/4 of the calculated supply, running very lean. If there's a difference in the plugs running this way it could be because the least efficient combustion factors would show more with this lean condition.
Ron