1988 Audi 90 engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCarburetion


Injection nozzle (injector)	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreCylinder head


Camshaft bearing	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAll Audi gasoline straight-5 2.2 L KV engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	180°180°180°

expand_moreAll Audi diesel straight-4 1.6 L RA engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	90°90°90°

expand_moreCrankshaft central screws


All Audi gasoline straight-5 2.2 L KV engines	258.15 lbf⋅ft258.15 lbf⋅ft350 N⋅m

expand_moreAll Audi gasoline straight-5 2.3 L NG engines


Special tool 2079	258.15 lbf⋅ft258.15 lbf⋅ft350 N⋅m
Otherwise	331.9 lbf⋅ft331.9 lbf⋅ft450 N⋅m


All other modifications	132.76 lbf⋅ft132.76 lbf⋅ft180 N⋅m


Crankshaft pulley	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel


Audi gasoline straight-5 2.0 L PS 114 HP	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Audi gasoline straight-5 2.2 L KV 134 HP, 186 N⋅m	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
All other modifications	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Use screw-locking compound.


Main bearing	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreEngine control


Camshaft timing gear	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Drive belt tensioner device	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Toothed belt guard at the bottom	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine lubrication


Oil drain plug	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Oil sump	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine management


Glow plugs	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


Audi gasoline straight-5 2.0 L PS 114 HP	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Audi gasoline straight-5 2.3 L 7A 168 HP	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


2.2 E with gasoline straight-5 2.2 L 134 HP, 186 N⋅m engine (1987.4–1991.7)	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1988 Audi 90 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 Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

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 Audi 90 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 1988 Audi 90 you're not only saving money, but also also improving your technical skills and learning something new.

1988 Audi 90 B3 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi 90 B3 model years

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