My zfailed CA smog I expected this however the guy said the timing was at 16 and it needs to be at 8 I ordered a timing light and it should be here next week howeve I have no clue on how to adjust the timing can someone help???

 

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Click: https://www.zdriver.com/forums/showt...ghlight=timing

 

Yes, bringing the timing back for some reason cleans up smog a bit.
I think for your car 8-10 is good but for emissions checking go on the conservative side. 7-8 BTDC is great.

For driving you may find that moving it back up to 12 before gives you a bit more torque once you have passed smog.

 

Thanks guys this looks like it'll be great help. I'm sick right now but when I'm better I'll go and give this a try.

 

you can also try SeaFoming it stuff works amazingly just pull a vac line that sucks (make sure its not the one to your brake booster) shove the hose in the can and rev the car. if the car dies its not a problem pull the hose out of the can start back up and rev higher lol hope this helps

 

Ok turned the timing down to about 7-8 then went for my free retest and I still failed the hydro carbons aloud is 138 I got 249 at 15 mph and aloud at 25mph is 77 I got 210 any thoughts on why this could be ?

 

HC means it's either running too rich, or the cat isn't working.

Was the car at running temp for the test? Does the car have a cat? Is the motor stock?

And read this in its entirety: https://www.zdriver.com/forums/showt...ghlight=failed

 

The engine is stock as far as I'm aware I was driving it around all day so defiantly at operating temp And it does indeed have a cat

Do u think I should try unplugging one of the injectors?

 

Okay I've unplugged #6 injector lowed the timing to about 5 going on a nice warm up run new oil new plugs fresh gas wish me luck

 

decided that my smog numbers were two high to go and do the retest so i ordered a new cat it will be here friday will probably put it on over the weekend break it in then smog it on my day off next week

 

If your # 6 cylinder has good compression. Unplug # 5 with your new cat set your timing to 5 degress, and unplug your cold start valve. Also make sure your oil and filter is fresh, and your car is freshly tuned up. Good luck man. I feel for you.

 

You can also try getting a new O2 sensor (really simple install). It did wonders for my smog numbers and I picked up a Bosch one at Pep Boys for $35 bucks-ish.