Hi everyone, I can't figure out how to create my own post so I am sorry. I have been having this issue and it is really starting to get the best of me and money. I have a 2001 Jetta ALH 5 speed manual with 349,000 miles. Car runs excellent BUT when it is cold, it is so hard to start. When I say cold, I am talking anything below 35 degrees Farenheight. I have replaced everything I can think of except the Injection pump. I was having glowplug issues last year to where the computer wasn't telling them to stay on long enough. Replaced the relays, the plugs, harness, temperature sensor, everything glowplug related. The only thing we came to conclusion on is the computer wasn't allowing the glowplugs to heat up enough. I had a shop install a manual glowplug switch on my dash that I am able to turn on/off myself. Got in the car the next morning, let them heat up for 30 seconds and the car started as if it was the middle of summer. It worked great all winter. This year, problems again. Pulled all 4 plugs and tested them. 2 were bad so we replaced them. Harness is good, every port is working and my switch is working. Still, when it is below 35, the colder the worse, I will let the glowplugs heat up for 40 seconds, and the car still turns over for 8-10 seconds while the engine jerks and bounces around until she finally fires off. What else could it be? Sounds like a fuel issue. I have replaced the fuel sending unit, the check valve and Mickey Mouse Clip, fuel filter is replaced every 10,000 miles and the last time was 900 miles ago. I am at a loss. Is there anything on the Injection pump that needs replaced or cleaned, etc? Jeff from Rocketchip just re-installed his Stage 2 tune since I just replaced my injectors and nozzles. He said fuel and air looked excellent when running. Has anyone experienced this? Please help if you can. Thank you!