Do you have MIL (CEL..Check Engine light)?
if so, go to AutoZone for a free DTC check and come back with the codes; or look them up in my site under Part 1, troubleshooting.
Did dealer do a fuel pressure check & DTC check?
For now, check each injector connector for corrosion/tightness
and with a piece of garden hose etc. you can listen to each INJ click when firing.
more from micro-tech-auto.com:
"Many different problems can occur when injectors start to leak or become partially or completely blocked. Some of the symptoms could be:
Rough idle
No start condition
Hard cold starting
Flooding on hot start
Rich fuel mixture
Fuel leaking onto engine
Poor gas mileage"
and the steps dealer should do or have done:
http://www.asashop.org/autoinc/june98/techtotech.htm
you can rebuild or replace the 3 injectors yourself, but try to get them to do it again at no cost to you.
