jdodson21
Member
Hey Everybody,
I just completed my first timing belt change (A4/ALH - followed DBW's how-to). Replaced fuel filter at the same time. The car runs well however it feels slightly more sluggish than before. My CEL is on and software tells me it is "Injection Start Control Deviation." I suspect my injection timing is not ideal following the TB change; which I intend to check/adjust tomorrow when my new Vag-Com arrives.
Before I go about adjusting the injection timing, I'm looking for a bit of clarification regarding which direction to turn which part in order to advance/retard timing.
DBW's write-up (A4 Timing Belt Change) says on page 110, #5 (Vag-Com Timing Procedure):
rocketeer928 has a great write-up on How-To: Replace...Injection Pump without Changing the Timing Belt and in that procedure it states:
The manual refers to rotating the "sprocket":
DBW: pump...counter-clockwise=advance timing
rocketeer928: hub/shaft...clockwise=advance timing
manual: sprocket..."right"(clockwise?)=advance timing
So I'm left confused.
As I currently understand it, rotating the hub/shaft clockwise has the same effect as rotating the sprocket counter-clockwise...but is the effect to advance or retard timing. If my understanding is correct, then rocketeer928 and the manual would be saying the same thing. When DBW says "pump," is he referring to the "sprocket"?
Anyone feel my pain?
Sure, I can wait for the Vag-Com and play around with turning things in different directions to see what the actual effect is...but I would be so appreciative if someone could help me settle this in my mind beforehand, I will sleep much better tonight.
Thanks in advance (no pun intended)
I just completed my first timing belt change (A4/ALH - followed DBW's how-to). Replaced fuel filter at the same time. The car runs well however it feels slightly more sluggish than before. My CEL is on and software tells me it is "Injection Start Control Deviation." I suspect my injection timing is not ideal following the TB change; which I intend to check/adjust tomorrow when my new Vag-Com arrives.
Before I go about adjusting the injection timing, I'm looking for a bit of clarification regarding which direction to turn which part in order to advance/retard timing.
DBW's write-up (A4 Timing Belt Change) says on page 110, #5 (Vag-Com Timing Procedure):
rotate the pump counterclockwise to make the number in block 2 increase or clockwise to make it decrease. Increasing the value of the number in block two will effectively "Advance your timing".
AND
Advancing the timing (counterclockwise) will reduce smoke output, increase fuel economy, and make the engine more rev happy.
I read "pump" to mean the hub/shaft/center bolt...am I wrong in reading it that way?
rocketeer928 has a great write-up on How-To: Replace...Injection Pump without Changing the Timing Belt and in that procedure it states:
- Rotating the center hub (shaft) counter-clockwise will retard the timing, and rotating the center hub (shaft) clockwise will advance the timing.
The manual refers to rotating the "sprocket":
Turning the sprocket to the left retards the start of injection and to the right advances the start of injection.
In summary...to advance timing:
DBW: pump...counter-clockwise=advance timing
rocketeer928: hub/shaft...clockwise=advance timing
manual: sprocket..."right"(clockwise?)=advance timing
So I'm left confused.
As I currently understand it, rotating the hub/shaft clockwise has the same effect as rotating the sprocket counter-clockwise...but is the effect to advance or retard timing. If my understanding is correct, then rocketeer928 and the manual would be saying the same thing. When DBW says "pump," is he referring to the "sprocket"?
Anyone feel my pain?
Sure, I can wait for the Vag-Com and play around with turning things in different directions to see what the actual effect is...but I would be so appreciative if someone could help me settle this in my mind beforehand, I will sleep much better tonight.
Thanks in advance (no pun intended)