1990 Ford Sierra Hatchback emission

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Condition	Value

expand_moreDiesel exhaust gas values

expand_moreCut-off control speed


All Ford diesel straight-4 1.8 L RFA engines	5100–5200 rpm5100–5200 rpm5100–5200 rpm
All Ford diesel straight-4 1.8 L RFB engines	5100–5200 rpm5100–5200 rpm5100–5200 rpm
All Ford diesel straight-4 1.8 L RFL engines	5100–5200 rpm5100–5200 rpm5100–5200 rpm


Maximum K-value	2.5 1/m2.5 1/m2.5 1/m

expand_moreGeneral exhaust gas values

expand_moreIdling speed with automatic gearbox

expand_more2.0 i with gasoline straight-4 2.0 L 107 HP, 174 N⋅m engine (1989.6–1993.2)


N8A engine	700–900 rpm700–900 rpm700–900 rpm


2.0 with gasoline straight-4 2.0 L 103 HP, 170 N⋅m engine (1987.1–1993.2)	750–850 rpm750–850 rpm750–850 rpm
2.0 with gasoline straight-4 2.0 L 103 HP, 170 N⋅m engine (1987.1–1993.2)	750–850 rpm750–850 rpm750–850 rpm
All other modifications	850–950 rpm850–950 rpm850–950 rpm

expand_moreIdling speed with manual gearbox


1.6 with gasoline straight-4 1.6 L 71 HP engine (1988.1–1993.2)	775–825 rpm775–825 rpm775–825 rpm
1.6 with gasoline straight-4 1.6 L 74 HP, 123 N⋅m engine (1987.1–1993.2)	775–825 rpm775–825 rpm775–825 rpm
1.8 TD with diesel straight-4 1.8 L 74 HP, 150 N⋅m engine (1988.8–1993.2)	850–890 rpm850–890 rpm850–890 rpm
1.8 TD with diesel straight-4 1.8 L 74 HP, 150 N⋅m engine (1988.8–1993.2)	850–890 rpm850–890 rpm850–890 rpm
1.8 TD with diesel straight-4 1.8 L 74 HP, 150 N⋅m engine (1988.8–1993.2)	850–890 rpm850–890 rpm850–890 rpm

expand_more1.8 with gasoline straight-4 1.8 L 86 HP, 145 N⋅m engine (1988.5–1993.2)


R2C engine	750–950 rpm750–950 rpm750–950 rpm
R6A engine	800–1000 rpm800–1000 rpm800–1000 rpm


2.0 16V Cosworth 4x4 with gasoline straight-4 2.0 L 217 HP, 290 N⋅m engine (1990.1–1993.2)	800–900 rpm800–900 rpm800–900 rpm
2.0 RS Cosworth with gasoline straight-4 2.0 L 201 HP, 276 N⋅m engine (1987.11–1990.1)	800–900 rpm800–900 rpm800–900 rpm

expand_more2.0 i with gasoline straight-4 2.0 L 107 HP, 174 N⋅m engine (1989.6–1993.2)


N8A engine	775–975 rpm775–975 rpm775–975 rpm


2.0 i with gasoline straight-4 2.0 L 114 HP, 160 N⋅m engine (1987.1–1993.2)	800–875 rpm800–875 rpm800–875 rpm
2.0 i with gasoline straight-4 2.0 L 114 HP, 160 N⋅m engine (1987.1–1993.2)	800–875 rpm800–875 rpm800–875 rpm
2.0 i with gasoline straight-4 2.0 L 118 HP at 5500 RPM, 171 N⋅m at 2500 RPM engine (1989.6–1993.2)	825–925 rpm825–925 rpm825–925 rpm
2.0 i with gasoline straight-4 2.0 L 123 HP engine (1989.6–1993.2)	825–925 rpm825–925 rpm825–925 rpm
2.0 with gasoline straight-4 2.0 L 103 HP, 170 N⋅m engine (1987.1–1993.2)	825–925 rpm825–925 rpm825–925 rpm
2.0 with gasoline straight-4 2.0 L 103 HP, 170 N⋅m engine (1987.1–1993.2)	825–925 rpm825–925 rpm825–925 rpm
2.9 i XR 4x4 with gasoline V6 2.9 L 148 HP, 233 N⋅m engine (1988.8–1993.2)	775–875 rpm775–875 rpm775–875 rpm
All other modifications	850–950 rpm850–950 rpm850–950 rpm


Minimum engine oil temperature at VET	176°F176°F80°C

expand_morePetrol exhaust gas values

expand_moreCO content at idling speed


1.6 with gasoline straight-4 1.6 L 71 HP engine (1988.1–1993.2)	0.5–1 %0.5–1 %0.5–1 %
1.6 with gasoline straight-4 1.6 L 74 HP, 123 N⋅m engine (1987.1–1993.2)	0.5–1 %0.5–1 %0.5–1 %

expand_more1.8 with gasoline straight-4 1.8 L 86 HP, 145 N⋅m engine (1988.5–1993.2)


R2C engine	0–1 %0–1 %0–1 %
R6A engine	0–0.5 %0–0.5 %0–0.5 %


2.0 16V Cosworth 4x4 with gasoline straight-4 2.0 L 217 HP, 290 N⋅m engine (1990.1–1993.2)	1–2 %1–2 %1–2 %
2.0 RS Cosworth with gasoline straight-4 2.0 L 201 HP, 276 N⋅m engine (1987.11–1990.1)	1.25–1.75 %1.25–1.75 %1.25–1.75 %

expand_more2.0 i with gasoline straight-4 2.0 L 107 HP, 174 N⋅m engine (1989.6–1993.2)


N8A engine	0.6–1 %0.6–1 %0.6–1 %


2.0 i with gasoline straight-4 2.0 L 114 HP, 160 N⋅m engine (1987.1–1993.2)	0.6–1 %0.6–1 %0.6–1 %
2.0 i with gasoline straight-4 2.0 L 114 HP, 160 N⋅m engine (1987.1–1993.2)	0.6–1 %0.6–1 %0.6–1 %
2.0 i with gasoline straight-4 2.0 L 99 HP engine (1987.1–1993.2)	0.5–1 %0.5–1 %0.5–1 %
2.0 i with gasoline straight-4 2.0 L 99 HP engine (1987.1–1993.2)	0.5–1 %0.5–1 %0.5–1 %

expand_more2.0 with gasoline straight-4 2.0 L 103 HP, 170 N⋅m engine (1987.1–1993.2)


N8C engine	0.35–0.85 %0.35–0.85 %0.35–0.85 %
NES engine	1–1.5 %1–1.5 %1–1.5 %


2.9 i XR 4x4 with gasoline V6 2.9 L 148 HP, 233 N⋅m engine (1988.8–1993.2)	0.5–1.5 %0.5–1.5 %0.5–1.5 %
All other modifications	0.5 %0.5 %0.5 %

expand_moreCO content at increased idling speed

expand_more1.8 with gasoline straight-4 1.8 L 86 HP, 145 N⋅m engine (1988.5–1993.2)


R6A engine	0–0.3 %0–0.3 %0–0.3 %


All other modifications	0.3 %0.3 %0.3 %

expand_moreIgnition time

expand_moreFord gasoline straight-4 2.0 L N8A 107 HP, 174 N⋅m

expand_moreN8A engine


For leaded fuel	-12°00'±2°00' - before TDC + after TDC
Otherwise	-8°00'±2°00' - before TDC + after TDC


Ford gasoline straight-4 2.0 L N4I 114 HP, 160 N⋅m	-8°00' - before TDC + after TDC
only using special tester
Ford gasoline straight-4 2.0 L N4A 114 HP, 160 N⋅m	-8°00' - before TDC + after TDC
only using special tester
Ford gasoline V6 2.9 L B4A 148 HP, 233 N⋅m	-8°00'±2°00' - before TDC + after TDC
Ford gasoline straight-4 2.0 L N5B 201 HP, 276 N⋅m	-12°00' - before TDC + after TDC
No adjustment possible
Ford gasoline straight-4 2.0 L N5C 217 HP	-16°00' - before TDC + after TDC
Ford gasoline straight-4 2.0 L N5D 217 HP, 290 N⋅m	-16°00' - before TDC + after TDC
Ford gasoline straight-4 1.6 L LSF 71 HP	-6°00' - before TDC + after TDC
Ford gasoline straight-4 1.6 L LSE 74 HP, 123 N⋅m	-6°00' - before TDC + after TDC
Ford gasoline straight-4 1.6 L L6B 79 HP, 121 N⋅m	-10°00' - before TDC + after TDC

expand_moreFord gasoline straight-4 1.8 L R2C 86 HP, 145 N⋅m


R2C engine	-20°00'±2°00' - before TDC + after TDC
No adjustment possible


Ford gasoline straight-4 2.0 L NEJ 99 HP	-6°00'±2°00' - before TDC + after TDC
Ford gasoline straight-4 2.0 L NE5 99 HP	-6°00'±2°00' - before TDC + after TDC
Ford gasoline straight-4 2.0 L N4B 99 HP, 148 N⋅m	-18°00' - before TDC + after TDC
only using special tester
All other modifications	-15°00' - before TDC + after TDC

expand_moreIncreased idling speed

expand_more1.8 with gasoline straight-4 1.8 L 86 HP, 145 N⋅m engine (1988.5–1993.2)


R6A engine	2800–3100 rpm2800–3100 rpm2800–3100 rpm


2.0 16V Cosworth 4x4 CAT with gasoline straight-4 2.0 L 217 HP engine (1990.1–1993.2)	2500–2800 rpm2500–2800 rpm2500–2800 rpm
All other modifications	2800–3100 rpm2800–3100 rpm2800–3100 rpm

expand_moreLambda value


1.6 i with gasoline straight-4 1.6 L 79 HP, 121 N⋅m engine (1989.10–1993.2)	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ

expand_more1.8 with gasoline straight-4 1.8 L 86 HP, 145 N⋅m engine (1988.5–1993.2)


R6A engine	0.98–1.02 λ0.98–1.02 λ0.98–1.02 λ


2.0 16V Cosworth 4x4 CAT with gasoline straight-4 2.0 L 217 HP engine (1990.1–1993.2)	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ
2.0 i CAT with gasoline straight-4 2.0 L 99 HP, 148 N⋅m engine (1987.1–1993.2)	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ
All other modifications	0.98–1.02 λ0.98–1.02 λ0.98–1.02 λ

expand_moreMaximum HC content at idling


2.0 16V Cosworth 4x4 with gasoline straight-4 2.0 L 217 HP, 290 N⋅m engine (1990.1–1993.2)	350 ppm350 ppm350 ppm
2.0 RS Cosworth with gasoline straight-4 2.0 L 201 HP, 276 N⋅m engine (1987.11–1990.1)	400 ppm400 ppm400 ppm
2.0 i with gasoline straight-4 2.0 L 99 HP engine (1987.1–1993.2)	350 ppm350 ppm350 ppm
2.0 i with gasoline straight-4 2.0 L 99 HP engine (1987.1–1993.2)	350 ppm350 ppm350 ppm
2.9 i XR 4x4 with gasoline V6 2.9 L 148 HP, 233 N⋅m engine (1988.8–1993.2)	350 ppm350 ppm350 ppm
All other modifications	100 ppm100 ppm100 ppm

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Ford.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1990 Ford Sierra Hatchback user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Ford warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Ford Sierra Hatchback service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1990 Ford Sierra Hatchback you're not only saving money, but also also improving your technical skills and learning something new.

1990 Ford Sierra Hatchback Second generation facelift (MK2) Emission

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Conquer your fears and never give up!

Ford Sierra Hatchback Second generation facelift (MK2) model years

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