Rover Kicking Out Obscene Black Smoke

[deano266]

Hi all. My superspec is due it's MOT and it's kicking out an obscene amount of black smoke.

 

What could be causing this and also why would it be running so rich.

 

The engine did get flooded after trying to start after a rewire and it has also had a rubber gasket replaced on the throttle body.

 

I really don't think it will pass the emissions test and it is running really lumpy.

 

Any help will be greatly appreciated especially with stoneleigh around the corner.

[theduck]

Black smoke is a sign of being rich normally

[deano266]

I know but what could be causing it to be running so rich. Could a faulty lambda be causing it.

 

It previously wasn't working properly and now it's wired in but can't test it until get to stoneleigh and speak to Mr Superspec (Alanrichey)

[alanrichey]

I assume you still haven't got a cable so you can run my software ? It could be one of the sensors not working properly but that is the only way you will find out.

 

Did you ever get your lambda sensor working ? If not try disconnecting it in case it is forcing the engine to run rich.

 

Or it might be burning oil ?

 

ECU multi-plug not in properly ?

 

(Hadn't seen Dean's reply)

Edited May 2, 2018 by alanrichey

[colinmoore]

Make sure there are no air leaks into the exhaust before the lamda, as this will give a false weak mixture to the sensor, which in turn will keep enriching the fuel duration. I had this recently leading to a over rich misfire.

[theduck]

you say you flooded the engine, how sure are you that was cleared before starting it? Could be worth trying again now it has sat

[philshelton]

Put a VW badge on it and say its normal setup

[deano266]

Philshelton. What a great idea

[deano266]

Well that's what I'm hoping will sort it when I'm ony way to stoneleigh. As it miraculously passed its MOT.

 

Only because it clogged up the probe and the tester didn't want to risk it a second time when it was visually a bit better haha

[alanrichey]

Well done. See you Sunday.

[deano266]

Having removed the lambda it seems to be running much cleaner.

[alanrichey]

Interesting. Will we able to run an analysis with and without the lambda ?