Supposedly I have some smoke that comes out of my exhaust while speeding away from people, I did a compression test-OK, Leak Down- Better than 0%, I'm running Mobil1 5-30 and HAMP filter. MY cat is gone, my personal thought about what is wrong, and I've noticed a little louder than usual ticking coming from the valve train. Supposedly this smoke is blueish, while my tip in smoke is white. The car runs a bit rich as it backfires under decelleration. Any thoughts?

 

if you're running mobil 1 synthetic then its definitely not oil burning because synthetic wont smoke when it burns.

 

thats not true at all...my friends 99 GSR ran full synthetic since day one and it smoked like crazy at about 30K miles.

 

I am running Valvoline Syn 5w-30 in h22 and burns oil slowly.

I'm goign to switch to Mobil 1

 

what do your plugs look like?

 

normal, no oil, no heavy carbon.

 

Just out of curiosity,how much oil is considered slow to u?.Im runnin an h22a also.It burns oil but no visible smoke as far as i can see....usually about half a quart every 1500 miles

 

If you're cat free there will be a bit more of a visible jet trail...er exhaust. Are you sure it's burned oil and not unburned fuel, a rich mixture?

 

I havn't actually looked at the smoke yet. I was thinking that it had to do with the cat as well. I might have to try a cat that will work and see if that will help my situation. I don't have any oil consumption per se.....

 

If it's only a little bit at the higher end of the rev range and you're running a straight pipe and not burning oil, I'd check my A/F ratio and or ignore it. Assuming the plugs are not getting fouled and the car is running fine with no codes.

 

thanks, I just wanted some reassurance.