000utback
Well-known member
96 Passat TDI at 495,000. 1 yr / 20,000 miles on timing belt done by professionals. Then VAGCOM said timing = 50 at 164 fuel temp; 840 idle / 5.4 mg/stroke / 1.34v. This was about midway between the center blue line and the top green line.
Past 2 weeks car is getting progressively harder to start after sitting overnight. Cranks great, but takes 20-30 seconds before it starts to fire 1 cyl, and more cranking to get enough firing to run. Lots of white smoke.
I rechecked the timing graph this morning after driving to work, and it shows 0, idling at fuel T 159. How can that be? Car runs ok, but for years I have been plagued with a light load shudder issue. Fuel consumption seems normal, over 800 miles/tank.
So, why would the timing show zero? and does that relate to my hard starting problem?
I know I should also look for air leaks into the fuel line, but still concerned about this timing question. Thanks for any comments.
Past 2 weeks car is getting progressively harder to start after sitting overnight. Cranks great, but takes 20-30 seconds before it starts to fire 1 cyl, and more cranking to get enough firing to run. Lots of white smoke.
I rechecked the timing graph this morning after driving to work, and it shows 0, idling at fuel T 159. How can that be? Car runs ok, but for years I have been plagued with a light load shudder issue. Fuel consumption seems normal, over 800 miles/tank.
So, why would the timing show zero? and does that relate to my hard starting problem?
I know I should also look for air leaks into the fuel line, but still concerned about this timing question. Thanks for any comments.