My guess and it is only a guess. If you find the fuel milage still acceptable and you are not blowing a lot of smoke especially on acceleration. I might leave it off.

Inversly if the milage is poor and too much smoke it is realy best to fix it properly. I know the last sentance is kind of excessive.

In combination with this issue it may pay you to examine the base pressure in the injection pump. Only if there is no smoke and milage has not declined below common averages for your model.

Just in case the pressure it is very low and it is taking the removal of the alda to make the car driveable. It is probably unlikely but it is past time to get some of the more common issues nailed down better.

They may have been circumvented too long or are not issues. In fact in my mind checking the available fuel pressure in the injection pump base is almost as important as checking the valves on the older models. There will be noticeable effects from sub standard pressure. A lot of them performance related.

I also have no ideal of the percentage of vehicles that have low pressure. The car in most cases will still drive okay but not perform overall as it should usually. This is now absolutly proven for rational purposes and not pie in the sky. A lot will test normal and a lot will not. If nothing else it will give a massive boost to your knowledge of the fuel system.

This message is not particularily aimed at the gentleman with the newer diesel. Yet since he uses wvo it could be an issue as well. The required pressure gauge is about ten dollars.

If the pressure is low and you restore the pressure to 19 lbs. Consider it the best return on ten dollars spent you ever got. If the pressure is normal you then know it is for sure. Leaving the gauge permanently installed is another consideration as well. There are many benifits.

Anyways it is nice to know the thread starter has got his car running much better with the end in site.