md75

Hi,

My 13B turbo II engine cuts the signal to the secondary injectors at about 5000 to 5200 upm!
Does anybody know this problem? Thanks for any help I can get!

FC3MAN

how can you tell the signal to the injectors is gone? are you riding around under the hood ay 5200?LOL?how bout the eng cuts out at 5200rpm,are you running more than stock boost 6 psi?fuel cut will cut fuel over 7-8psi do you have a fuel cut defender?

md75

tested with an oszilloscope! there is a signal at the primary injectors all the time, and ther is one at the secondary injectos till 5000upm.
I've changed my old injectors (pink, 2,3 Ohm resistance). The injectors now ar purple and have a resistance of 1,9 Ohm. Could this be the problem?
engine is completely stock!

RicerTuner

I'm also having the same problem. I work at a shop in VA the RX7 we are working on is ex Peter Farrell Supercar. There is no signal from ECU to Secondary injectors. This happened after we tried to do the non-sequential conversion and removed all emission components.

md75

@ Ricer Tuner

What did you do exactly as you tried to do the non sequential conversion?
My enigne was new rebuilt last year but completely stock. I've just changed injecotrs, because there was some misfiring at about 4000 to 4500 upm. => thought secondary injectors could be the problem.

md75

I have to correct my posting.
The signal to the sec. inj. is cut when I make a "kick down" at the accelerator at every rpm. Slow accel. => Injcetors work up to 6500upm. Boost seemms to be o.k.

RicerTuner

The seconday injection dont come on at all. the engine wont rev more than 4000rpm it starts back firing. there is bunch of vaccum solenoids that we have removed.

RETed

Ignore those comments.

The guy is talking about an FD3S, so he doesn't know you're talking about an FC3S.


-Ted