2003 Nissan Almera • 4 cylinder FWD Manual • 65,987 miles

I have a 2003 nissan almera which had the wrong plugs fitted I have replaced them and now its running rough trying to stall at lights or under load judders when accelerating or slowing down. No warnings and its running too rich any ideas it also started to idle irratic
March 22, 2011.

Check for vacuum leaks
Check for codes
I am not familiar with Almera if have ignition wires check wires

Mar 22, 2011.

I would remove the mass air flow sensor, which is situated on the inlet pipe between the air filter box and inlet manifold, I would remove it from its housing then clean it with engine/brake cleaner, to clean any dust/dirt off and refit. If any better I would replace the mass air flow sensor. It is one of the most common faults and the symptoms you describe fits into a faulty mass air flow.

Hope that helps.

Mar 28, 2011.