Madabout Kitcars IVA Guides

Petrol engines

Based on effective date of registration for your engine. In all cases we are assuming that the manufactured date of your engine is not in question.

CO = Carbon Monoxide

HC = Hydrocarbons

Effective date before 1^st August 1975

Visual check only

Effective date between 1^st August 1975 and 31^st July 1986

Visual check plus CO level at 4.5% or less and HC at 1200ppm or less

Effective date between 1^st August 1986 and 31^st July 1992

Visual check plus CO level at 3.5% or less and HC at 1200ppm or less

Effective date between 1^st August 1986 (3 wheeled vehicles)

Visual check plus CO level at 3.5% or less and HC at 1200ppm or less

Effective date after 1^st August 1992

Fast Idle Test (2500 to 3000rpm)

CO<=0.3%

HC<= 200ppm

Lambda between 0.97 and 1.03

Idle Test

(450 to 1500rpm) CO<= 0.5%

Effective date between 1^st August 1992 and 31^st July 1995

and manufactured without a Catalytic converter

Non cat test, CO level at 3.5% or less and HC at 1200ppm or less

and manufactured with a Catalytic converter

Carry out a CAT test using vehicle specific limits

where an exact match in the analyser database (VOSA thing) cannot be found

Non cat test, CO level at 3.5% or less and HC at 1200ppm or less

Effective date after 1^st August 1995

If an exact match in the analyser database is found then;