Emissions MOT fail S2 Colone 2.9 injection

[LenChim]

Ok, so it failed, changed the plugs as they were looking a bit variable in color set at 0.7mm, new HT leads, the old ones had seriously odd resistance (ohms) readings, cleaned the thermisters in the air flow meters. Cleaned the air filter. Checked the ignition timing, and there seems to be a lot of variation in what is correct for the timing so set it at 12 deg before TDC at tick-over. Any better suggestions? Does it affect the emissions that much?
I think that I could take out the fuel injectors and clean them and make sure that they are giving a decent spray and cut-off.
Is there anything else that you can suggest that may help?

[v8s4me]

What year is your car? Does it have CAT's?

[ivanhoew]

yes timing can deffo affect emmisions len , what were the numbers on the test ?


i found this helpfull ..

https://thumbsnap.com/f/CqANmcdj

Edited by ivanhoew on Tuesday 4th June 18:29

[phillpot]

The complete article . . . . . .

http://middlebridge-scimitar.co.uk/downloads/ford2...

[v8s4me]

You might want to read THIS

Edited by v8s4me on Tuesday 4th June 22:52