Volvo Gdi Emissions

Re: The old Volvo S/V 40s' with the 1.8, 125 BHP engine, (B4184SM) Engine code in the vin. No is 13 for the very early ones and 26 for the later ones. (These are the mitsubishi engines).

Emissions Testing.
These are the lean burn engines and can be absolute 'mothers' to get thro' the test. I'ts as if the cat refuses to light up & it's more the nature of the beast than a fault, but the book does not make any 'allowance' for these variants. You are well advised to try this before changing any components...
Set the gas analyser up so that it's ready to accept the fast-idle readings, go for a 'Japanese' road test and the second you get back, (preferably) get the 'yoof' to shove the probe in whilst you hold the revs. Chances are it will breeze through. Now I know this is not the MoI, but if you replace the cat or whatever and it's just the same...........

Footnote: they also suffer from a build-up of coke on the back of the inlet valves, but that's another story.
Hoot Hoot.