Compression Ignition Addict
Join Date: Nov 2009
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Awful throttle response after doing oil and fuel filters..
just rolled over 93,000 miles on my 08 and did the oil change and fuel filters, using all motorcraft filters and rotella oil like I did previously. Went really slow, being very careful, cleaning surfaces, lubing the seals, etc. No leaks anywhere. Did the purging of air before starting it for the first time.
Now I took it for a test drive and it falls on its face. I can drive and keep it up to speed, but that mostly instant throttle response and boost built up is not there. It revs fine in park and neutral, just seems to not build too much boost when driving. Have not noticed any noises or codes.
The truck is all stock. It feels like it was detuned and I have a brick under the go pedal. My only thought is that I tightened all the 36mm caps too tight?