AndyBees
Top Post Dawg
- Joined
- May 27, 2003
- Location
- Southeast Kentucky
- TDI
- Silver 2003 Jetta TDI, Silver 2000 Jetta TDI (sold), '84 Vanagon with '02 ALH engine
Okay gurus, this is my 2002 Jetta ALH TDI engine that's in the '84 Vanagon (its all documented in the TDI Conversion thread) with the hard start issue .... cold or hot.
So, right now, on VCDS the Air Temp is showing 22.5C, Fuel Temp is 24.3 and the coolant temp is 24.3. The engine has not been started in about 20 hours. It is getting cooler as the sun gets lower in the sky.... so, that may account for the Air Temp being a little lower.
I don't think temp difference is the issue.
As I posted over in the Conversion Thread, yesterday morning I cranked it 7 or 8 times with no start..... on the last couple of tries there was some diesel smoke/smell. The battery (new) began to show some weakness. About an hour later, I hit the starter and in a couple of revolutions, it fired right-up!
Also, yesterday afternoon, at a trailhead, we left it parked nose down hill (fuel tank in front and lower than engine). When we come back from a three hour hike, after about 5 or 6 seconds of cranking the engine fired right-up. That was a little longer than it should take, but probably okay. Now, I'm questioning whether or not it is fuel related.... siphoning back (no check valve in my simple set-up for the van).
A couple of weeks ago, I did set the IQ from one end of the range to the other with no difference as far as I could tell. (3.2 to 5.2) It is now set on 4.4.
Correction: The IQ was initially at 4.4, then I tried across the range at different settings. It has been on 3.2 (more fuel) since a week before going to the Fest. I just now set it back to 4.4.... going to leave it there for a while or until someone comes up with a suggestion.
The Timing is about half way between center blue line and top of graph (slightly advanced). That's where the timing is on my Silver Jetta with a 312k mile engine. It starts exceptionally quick! Comments at bottom of graph say, "within spec but slightly advanced."
..........give me your thoughts!
So, right now, on VCDS the Air Temp is showing 22.5C, Fuel Temp is 24.3 and the coolant temp is 24.3. The engine has not been started in about 20 hours. It is getting cooler as the sun gets lower in the sky.... so, that may account for the Air Temp being a little lower.
I don't think temp difference is the issue.
As I posted over in the Conversion Thread, yesterday morning I cranked it 7 or 8 times with no start..... on the last couple of tries there was some diesel smoke/smell. The battery (new) began to show some weakness. About an hour later, I hit the starter and in a couple of revolutions, it fired right-up!
Also, yesterday afternoon, at a trailhead, we left it parked nose down hill (fuel tank in front and lower than engine). When we come back from a three hour hike, after about 5 or 6 seconds of cranking the engine fired right-up. That was a little longer than it should take, but probably okay. Now, I'm questioning whether or not it is fuel related.... siphoning back (no check valve in my simple set-up for the van).
A couple of weeks ago, I did set the IQ from one end of the range to the other with no difference as far as I could tell. (3.2 to 5.2) It is now set on 4.4.
Correction: The IQ was initially at 4.4, then I tried across the range at different settings. It has been on 3.2 (more fuel) since a week before going to the Fest. I just now set it back to 4.4.... going to leave it there for a while or until someone comes up with a suggestion.
The Timing is about half way between center blue line and top of graph (slightly advanced). That's where the timing is on my Silver Jetta with a 312k mile engine. It starts exceptionally quick! Comments at bottom of graph say, "within spec but slightly advanced."
..........give me your thoughts!
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