Had leaking head gasket and missfire on cyl. #4. Ran blue devil through and so far has fixed leak and smoking, no I have almost no acceleration, the enine seems bogged down. I also replaced thermostat housing, but removed the thermostat to let blue devil flow freely, all of this as of today. The cylinder may not be getting filled with water any longer, so maybe it's a bad plug, I also heard this bogging, and puttering, almost to the point of stalling esp. Stopped or starting out, it feels like the car wants to go but no flow!? I heard cat converter clog? Etc. Thinking of taking it to Aamco tomorrow

 

Welcome to the forum!

Do you have a fuel pressure tester or a vacuum gauge? Have you used this particular Aamco before, or has it come recommended from folks you trust?

-Rod