HFS-3 with big fuel injecters

[TJ]

Originally Posted by Richard L

Can you measure the voltage on test pin 16 relative to the "ground" pin.

1. pre-crank
2. during cranking
3. engine started and idling
4. light cruise
5. mild acceleration
6. WOT.

I shall try it in the morning

[Richard L]

Once these IDC signal is noted, we can track down the late trigger problem.

[TJ]

Richard,
I had to leave town before completing the test. I'll be away until Christmas...will conduct the test upon return.

[TJ]

Originally Posted by Richard L

Can you measure the voltage on test pin 16 relative to the "ground" pin.

1. pre-crank : .03
2. during cranking : 0.13
3. engine started and idling : 0.10
4. light cruise: .25
5. mild acceleration: .35
6. WOT : 2.5

Finally manager to take the measurments and the results are as above in volt.

[Richard L]

It appears you are only see 50% of the fuel flow. I suggest you put in a x1.5 multiplier (underside of the circuit board). Cur x1 and link x1.5.

After solder modification please make another measure as before for me.

You should be a much healthier signal on pin 16.