New to the forum, though I've been following it for years to understand work being done on my car ('03 Jetta TDI). I'm looking for guidance and input on recent issues with the timing of my engine and trying to get to the bottom of what happened. Bear with me, I don't work on the car and am trying to understand some of the basics!
Recent hard starting issues and lack of power led to cleaning out the intake manifold (full of carbon), replacement of ECT, MAP Sensor, adjustment of injection pump timing and adjusting settings on [computer] and new fuel filter. Ran great for three days - though I noticed lower than usual MPG and check engine light came on. Brought it back in to be looked at and fault code was for thermostat. Was sent on my way with comment that it would be fine.
Drove 60 miles to my destination, car sat for 2 hours and when I went to start car, it turned over but wouldn't fire - lots of smoke and smells like diesel. Couldn't get car to start so had it towed back to shop.
Since it had just been worked on for these issues, something wasn't right. Second time around, previous work was checked and, in doing so, the engine siezed. Here's where I have questions to understand what might/might not have been done:
Injection pump timing was checked again and found to be out of spec. Injection pump bolts were replaced.
1. When replacing these bolts, would tension be released on the tb? Would one need to loosen any of the other sprockets in order to replace these bolts? Would cam sprocket need to be loosened?
2. Should engine timing be checked along with injection pump timing?
3. Should engine be turned over manually before attempting to start vehicle?
Recent hard starting issues and lack of power led to cleaning out the intake manifold (full of carbon), replacement of ECT, MAP Sensor, adjustment of injection pump timing and adjusting settings on [computer] and new fuel filter. Ran great for three days - though I noticed lower than usual MPG and check engine light came on. Brought it back in to be looked at and fault code was for thermostat. Was sent on my way with comment that it would be fine.
Drove 60 miles to my destination, car sat for 2 hours and when I went to start car, it turned over but wouldn't fire - lots of smoke and smells like diesel. Couldn't get car to start so had it towed back to shop.
Since it had just been worked on for these issues, something wasn't right. Second time around, previous work was checked and, in doing so, the engine siezed. Here's where I have questions to understand what might/might not have been done:
Injection pump timing was checked again and found to be out of spec. Injection pump bolts were replaced.
1. When replacing these bolts, would tension be released on the tb? Would one need to loosen any of the other sprockets in order to replace these bolts? Would cam sprocket need to be loosened?
2. Should engine timing be checked along with injection pump timing?
3. Should engine be turned over manually before attempting to start vehicle?