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Major misfire on idle, 2.2 petrol manual
terry paget:
This is the car I am preparing for MOT. I reported last week about a poor idle; did a diagnostic check, both lambda sensors were steady on 'lean', so I have changed the first lambda sensor and the MAF meter. Nothing has changed. I now suspect massive induction system air leak. I have been here before on a 2.5 after I trapped an O-ring replacing the plenum. The question for me is where is it on a 2.2. I suppose the whole breather system is supect, and the whole induction tract from air cleaner onwards.
Any tips most gratefully received.
TheBoy:
What is the maf reading?
JamesV6CDX:
Any steam from the exhaust Terry?
My 2.2 was rough only at idle and it was due to a HG fail
Doctor Gollum:
Check all the rubber hoses connected to the throttle body... probably a simple air leak ;)
terry paget:
--- Quote from: TheBoy on 01 April 2018, 11:29:17 ---What is the maf reading?
--- End quote ---
At 2000rpm steady running on all four22Kg/h, 1.35v;
at a hesitant idle (firing on 2?) 16Kg/h 1.00v.
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