That is wonderful, on all counts! =) Thank you for the tip on the library. Never thought of that. I used to have an Audi and that was so easy to find info on. Not the Buick.
I forgot to answer a couple of your questions. I did check the codes (Autozone) and they turned up with evap system codes. I will get them checked again. The reason that I ended up on this route was thanks to another member pointed me to a recall from GM that pointed to these issues. It seems that a list of owners kept taking their cars to the dealership and no one could ever diagnose the problem. At first, I thought that it was the charcoal canister because my Audi had the same symptom of hard start after gasing up and rough idles. Then a member sent me to the exhaust and
intake solenoids.
Although the problems persist, changing these out has solved the hard start problem to 95%. It doesn't start on the first go but then starts up fine the second and doesn't choke up badly. I used to have to play a game with the throttle, feather it upon start up and then kick the revs up hard which resulted in a strong fuel smell. That issue is almost gone, so believe that I am on the right track.
Your explanation that the camshaft position sensors control fuel injection has offered me further evidence that these could be the issue. Because on top of the rough idle (which is now the primary issue) 3 times out of 10, when I roll of a light, I get a hesitation. If I keep my foot pushing on the throttle, at the same position, she feels like she might stall. So I feather and sometimes jam the pedal down to get her back on track. It seems feasible that this could be because the fuel injection is not squirting juice into the system until until it is coaxed or pushed. I also feel like she is running as hard as I am climbing up the revs (I have felt her do better), unless I gun it and it kicks down a gear.
If it is a doable "quick fix" I might also replace the crank sensor, because correct spark timing could also be at fault. Thank you very much for leading me down that path, as well.
I hope that I can get to these sensors without a huge ta do. As mentioned, I will let you know how it goes.
I will also cruise over to the library to see if I can find the needed information. I have access to two or more larger libraries (Miami Beach) that should be large enough to have the needed books.
Thank you, once again, so much for helping me. I too want to learn but also don't want to pay a mechanic to do something that can be done without a huge amount of work.
Have a great day!
