Fuel Injectors...

Just put in 6 KEM injectors (142-105)
- starts fine, runs better, but
- MPG went down by bout 50%
- smelling Cat Cnvrtr & getting light-headed
...
- Also, suggestions for checking fuel pressure at fuel rail
- KEM said press should drop no more than 50% in 8 hrs

I'm not sure what you are asking. Are you saying you changed your injectors and your mileage went from say 20 mpg to 10 mpg? It cut in half!

Jim

I'd didn't clock it...
but I can almost see the gauge move!
MPG down A WHOLE LOT
& getting cat cnvter smell

But what are you asking? What to do about the new injectors or what to do about your mileage?

Cause the answers are different.

My first impression/advice is simply go back to the old injectors.

Did you unplug your battery so that the computer can recalibrate mixture ratios?

Change pressure regulator?

Change pressure?

Why did you do this in the first place?

What else did you do?

Do you have a leak somewhere?

etc.?

Jim