MoT Time

[ChimpOnGas]

Today I secured my fifth consecutive no advisories pass in the same number of years

Wishing all on here the same result for your next MoT.

Dave.

[ChimpOnGas]

ianwayne said:

I think that means it should have failed on emissions but it, ahem, didn't.

[ChimpOnGas]

SILICONEKID346HP said:

I thought LPG sales through an MOT, I watched wheeler dealers when a V8 land rover failed because of high mileage . ,they stuck the LPG kit on and it went straight through .

In order to correctly test the emissions on an LPG vehicle the tester must first select the correct setting on his gas analyser.

This is because burning LPG produces a different type of hydrocarbon to petrol so the calibration on the gas analyser must be adjusted to compensate, my tester still hasn't found the LPG button on his analyser so my HC figures are actually totally inaccurate

The rules on testing a dual fuel vehicle are simple:

1) The car must be tested on the fuel type it's presented on

2) When tested on LPG the CO only needs to be less than 3.5% for a pass

3) When tested on LPG the HC only needs to be less than 1200ppm

It's quite lenient really and far easier to pass an emissions test on LPG than to pass on petrol.

But when testing an old Rover V8 with no catalytic converters fitted it really doesn't matter what fuel you're running, a fail is almost inevitable.

With the Stealth cam I find a richer idle works best, any leaner than 13:1 and she starts to hunt so there's not a hope in hell I'll even hit the 1200ppm target.

Pop the big dustbin main cat back on and she sails through, but its so restrictive it doesn't stay there for long if at all.

The whole emissions thing is a load of old bull in my opinion, cars only make up a tiny percentage of the worlds green house gasses, electricity production & industry is where it all comes from.

The only thing a responsible car owner should be concerned about is particulates, these little fekers get in your lungs and cause a lot of repository damage.

By far the worst particulate offenders are diesels, so if you want to cut down on harmful emission that genuinely kill on a local level dont stress over your HC, CO or Nox... Just make sure you're not chucking out loads of particulates.

And the best way to do this is to stop driving evil diesel vehicles





Your TVR is not a killer, your local public transport bus company however definitely is!

[ChimpOnGas]

pincher said:

pincher said:

Mine comes out of the garage tomorrow for what is, I think, only the second time since July last year and is going for an MOT.

Only done a couple of hundred miles since the last one, so I'm hoping for a pass.

Passed - no advisories

Congratulations pincher, always a good day when you get a pass