Greasy residual on lower part of exhaust tips. Does the Z get tuned to run very rich

mcwoowoo · 10-08-2009, 10:35 AM

I drove my Z (complete stock) for about 1K miles and noticed that there alot of greasy buildup on the lower part of the exhaust tips. I'm guessing this is resulted from the car running too rich? I would think that stock cars are tuned rich, but that's a little to much right? The AFR would probably be lower then 10 (guessing). Anyone else noticed this problem?

imag · 10-09-2009, 12:30 AM

I think it's probably oil. These things are definitely spewing some amount of oil, especially in the break-in period. Check your oil levels regularly.

1slow370 · 10-09-2009, 06:36 AM

well not all of them are spewing oil just some unlucky people's cars.

spearfish25 · 10-09-2009, 07:08 AM

I clean the tips pretty regularly but I never notice much buildup. Knock on wood but my oil levels are very constant as well.

Denny McLain · 10-12-2009, 05:33 PM

Quote:

Originally Posted by 1slow370

well not all of them are spewing oil just some unlucky people's cars.

One of the lucky ones as mine never did it and in checking the oil level around the 1000 mile mark using 0-40 Mobil 1 it's exactly as when the oil was topped off.

Stock they are pretty rich though.

10-08-2009, 10:35 AM	#1 (permalink)
mcwoowoo Base Member Join Date: Sep 2009 Location: SAN MATEO, CA Posts: 22 Drives: EVO9,C350,FX35,370Z Rep Power: 16	Greasy residual on lower part of exhaust tips. Does the Z get tuned to run very rich I drove my Z (complete stock) for about 1K miles and noticed that there alot of greasy buildup on the lower part of the exhaust tips. I'm guessing this is resulted from the car running too rich? I would think that stock cars are tuned rich, but that's a little to much right? The AFR would probably be lower then 10 (guessing). Anyone else noticed this problem?

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10-09-2009, 12:30 AM	#2 (permalink)
imag Enthusiast Member Join Date: Mar 2009 Location: Oakland, CA Posts: 446 Drives: up the wall Rep Power: 16	I think it's probably oil. These things are definitely spewing some amount of oil, especially in the break-in period. Check your oil levels regularly.

10-09-2009, 06:36 AM	#3 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	well not all of them are spewing oil just some unlucky people's cars.

10-09-2009, 07:08 AM	#4 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	I clean the tips pretty regularly but I never notice much buildup. Knock on wood but my oil levels are very constant as well.