I would expect a MAF reading around 5g/s at idle with a hot engine. The egr not working properly or a dodgy maf will give different readings

nodger said:

I put in an EGR blanking plate to see if that was contributing to the problem, but it made no difference to the MAF readings (as I suppose you would expect). I'm going to see if I can visually inspect the hoses for leaks, but I'm not sure how much access I'll be able to get at home.

It's odd that we are getting such similar MAF readings. Maybe your black smoke isn't related to the MAF?

I'd also like to get a definitive source on the expected MAF readings because I don't trust the AI sources too much. They tend to synthesise information from multiple sources.

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Two days ago I replaced my last two injectors with low milage used units... smoking has reduced drastically, and my power has returned quite a bit. Having said that, and accepting that at least one of my remaining injectors was probably faulty, I still don't think she's running lean enough.. O2 air/ fuel readings are in the 0,2 range, and my MAF values are still doubtful... 11 to 13 on idle. But as you say, trying to find the expected values is proving very difficult. Here in SA I find it difficult to get a "Diagnose Dan" type guy to really dig into the data and offer any helpful information, it's always just "okay, maybe it's your 02 sensor, go but a new one"