2010 Chrysler Town and Country 3.8 no power, CAnnot locate known good cmp/ckp
Please note before responding. There is no exhaust on this engine except for the manifolds and crossover pipe. There is a possibility my problem is in there.
This vehicle runs just like a plugged cat. I am attaching several waveforms. I am a mobile driveability tech and can get back to this vehicle if I need to. There have been numerous parts put on this vehicle and it has been to 7 shops.
I would appreciate a known good ckp/cmp if someone has it in .psd
Thanks Sam
UPDATE: I reattached the pico files. Something google drive must have done to them when synced with filestack. They are (or should be) .psd files.
For your info here are the tests I have run with results.
1. In cylinder every cylinder with a sync 25 PSI pressure on exhaust stroke during rev. Remember no exhaust on engine.
2. Intake pressure wave form. WPS and a nicholson sensor
3. Exhaust pressure waveform WPS and nicholson sensor
4. CAM/Crank with cylinder pressure and sync on same cylinder. (cylinder 4) According to what I have found the Cam crank is correct. or super close. within 1 degree.
I know the 25PSI is my problem. I expected if the manifold was collapsed to have different results in the back cylinders due to the layout of the exhaust. FYI this is a front manifold that uses a crossover pipe to the back manifold with a single discharge. I am ready to tell the shop to remove the manifolds and inspect. I would appreciate any input someone else may have.