Black Exhaust Deposits

R90GRN · Post by **R90GRN** » Wed Sep 12, 2018 3:33 pm

Hi,

Noted some black marks on the bumper from the exhaust, should I be concerned???

My Zed is a 2.5Si 65k serviced eBay previous owner in Nov 17 (3k miles ago)

Ewazix · Post by **Ewazix** » Wed Sep 12, 2018 3:47 pm

99% sure its no problem providing your oil use is normal, coolant levels are stable and you don't have visible smoke when hot. The black is carbon mixed with water vapour, could be down to short runs, a fill of premium V power fuel or similar and a good hot drive should sort it. Very occasionally it can be a sign of a failing injector, but would also have rough running and maybe a code.
Drive it

buzyg · Post by **buzyg** » Wed Sep 12, 2018 5:18 pm

Looks distinctly oily. As above,. Keep an eye on your oil consumption and check no blue tint to the exhaust gasses. Hopefully it has just built up over time.

Smartbear · Post by **Smartbear** » Wed Sep 12, 2018 10:12 pm

That can be an early sign of ccv meltdown occurring, keep an eye on the consumption rate & check inside the inlet manifold by removing the disa for oily residue

Rob

ph001 · Post by **ph001** » Thu Sep 13, 2018 9:51 am

^^^^This. Smartbear has it spot on.

R90GRN · Post by **R90GRN** » Mon Sep 17, 2018 1:49 pm

Thanks for help guys, I’ve been running on Vpower since I got it in June and the last fill was standard unleaded and there has been less residue.

Fingers crossed it’s just a clean out.

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