Hello Guys,
Working on Toyota MR2 with P0300, on cold start CEL is flashing.
was managed to catch this injector pattern looking different then all the others.
As my experience is very little, and even though i know what a injector graph should look like, i would like to read your opinion.
I see voltage drop is "only" 12V, and pattern is not flat but curved.
After engine is hot, pattern goes OK. what would cause this? bad ECU driver?
It looks like you have one channel's power and ground leads connected across the injector power and ground terminals. Don't do that. It will damage your scope if it hasn't already.
Did you only have the one channel connected to the vehicle? Which scope model?