donbrew

To more fully answer the spark timing question: the single cartridge 2006 uses a "wasted spark" system, like Harley-Davidson. It sparks relative to both TDCs. 1-3, 2-4 spark at the same time, it doesn't matter power stroke or exhaust stroke.

Assuming the chain is on right, the spark timing is always right, because the ECM uses input from the crankshaft sensor to trigger the spark. The ECM decides how much to advance/retard.

On VVT engines it is a bit more complicated because the valve timing can change.

jakebenson6669

thank you. This makes so much sense of why the motor runs as good as it does with the cams being out 180 degrees.

jakebenson6669

Ok, so I tore the side and valve cover back off this weekend, and reset everything the right way. Had to buy another cam chain tensioner because those things are flat out junk and most times once you set it, it can't be locked back down cause the small ***** inside that locks it breaks.but anyway, got everything back together and drive around a while letting the car get to operating temp a couple different times. Everything is good to go I guess. The only code I'm getting now is the evap system control valve, or evap purge valve. What might this hurt if not fixed? Thank you everyone for the input you had. I appreciate the help.

Oldblue

So which tensioner did you get?the new style has the thicker head with the hump, in the left in this picture



As for the evap codes they can cause reduced power issues and higher fuel consumption

https://www.chevyhhr.net/forums/how-...acement-44780/

And the library of threads

https://www.chevyhhr.net/forums/sear...y=Evap%20valve

donbrew

Both of the EVAP valves are under $20 each if you shop around. And a lot easier than a timing chain!

Even if you had the old style mechanical tensioner they can be re set.

Oldblue

Rockauto purge valve

https://www.rockauto.com/en/catalog/...rge+valve,4936

Canister from Rockauto, note the Standard and Airtex Wells include the adapter harness
https://www.rockauto.com/en/catalog/...solenoid,16992

jakebenson6669

thank you all again for all the help. I bought the newer onne on the left, but if you year it down, the locking mechanism inside is only a small piece of weld or solder. Seems like every one separates as soon as it is unlocked. Couldnt be happier sit the way it runs, and since Autozone swapped it for a free one, I'll eat the money. Lol. But i saw another thread somewhere that showed three different tensioners. I think clouds made the third. Its supposedly the best. Anyhow, I do a lot of "parts that can wait" buying from rockauto, so I'll check into the purge valve. But i didnt know there are two on the car? I know the one on the valve cover. Where is the other? Right now my phone is being really slow so I'm not able do look into it much at the moment. But I want everyone to know I really appreciate the help with everything. I hate letting someone else turn wrenches on my motor, some shops know how to keep you coming back you know. And i will never use the dealership for service cause I'll never own a brand new car.

donbrew

EVAP purge valve: underhood. EVAP vent valve: next to fuel tank (needs new wiring harness for pre-2009).

They are usually the same price at Autozone/Advance/O'Reilly (any place that sells Dorman) as rockauto and no shipping.

Oldblue

The Standard and Airtex Wells come with the harness.

jakebenson6669

great call guys, thanks again for all the help, I'm sure I will be back in the future for more assistance. Take care guys.