-The mS is spot on on all 4 with no deviation between them.
-The cylinders are completely clean with no build-up on pistons which typically means there is minimal buildup on injector tip.
-The plugs are relatively clean, just have been fouled by fuel for a long time, so they will be replaced today.
-Did a fuel pressure leakdown test to make sure I don't have an injector sticking....passed that.
The intake will be coming off in 5K when I hit 160K miles for routine checking/cleaning of valves and new injector seals as well as my HPFP check/follower service.
But as for checking the injectors, what else can I check with them? If there is an issue with injectors, it's ALL 4 because all 4 cylinders were doing the same thing and the timing retard values were the same for all 4 when the car was acting up.