Hello folks. Just an up date on my td4. I took off the hp pump and bought a service kit and serviced it by replacing the seals on all three cylinder heads. Put it back and the car started and ran ok. Then the next day it refused to start again. So I m lost. I m now beginning to think the problem is electronic. By the way I cleaned all gunk from all the air intake pipe. How do you test for injector power feed? I also suspect the performance chip might be the culprit. Any ideas?