1999 Hyundai Atos Prime engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All Hyundai gasoline straight-4 1.0 Liters G4HC engines	13.28–18.44 lbf⋅ft13.28–18.44 lbf⋅ft18–25 N⋅m

expand_moreCooling system


Coolant pump pulley	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m

expand_moreCylinder head

expand_moreCylinder head screws

expand_more1.0 i with gasoline straight-4 1.0 L 54 HP at 5500 RPM, 82 N⋅m at 3100 RPM engine (1999.8–)

Figure 1. Cylinder head, Cylinder head screws, 1.0 i with gasoline straight-4 1.0 L 54 HP at 5500 RPM, 82 N⋅m at 3100 RPM engine (1999.8–).


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
See figure 1.
Second stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Third stage	44.25–51.63 lbf⋅ft44.25–51.63 lbf⋅ft60–70 N⋅m

expand_moreRocker bridge


1.0 i with gasoline straight-4 1.0 L 54 HP at 5500 RPM, 82 N⋅m at 3100 RPM engine (1999.8–)	22.13–25.81 lbf⋅ft22.13–25.81 lbf⋅ft30–35 N⋅m


Valve cover	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m

expand_moreEngine block


Connecting rod bearing	14.75–18.44 lbf⋅ft14.75–18.44 lbf⋅ft20–25 N⋅m

expand_moreCrankshaft central screws


All Hyundai gasoline straight-4 1.0 Liters G4HC engines	51.63–73.76 lbf⋅ft51.63–73.76 lbf⋅ft70–100 N⋅m


Flywheel	51.63–59 lbf⋅ft51.63–59 lbf⋅ft70–80 N⋅m
Main bearing	36.88–40.57 lbf⋅ft36.88–40.57 lbf⋅ft50–55 N⋅m

expand_moreEngine control


Camshaft timing gear	59–73.76 lbf⋅ft59–73.76 lbf⋅ft80–100 N⋅m
Drive belt tensioner device	16.23–22.13 lbf⋅ft16.23–22.13 lbf⋅ft22–30 N⋅m
Toothed belt guard	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
Toothed belt tightener	16.23–22.13 lbf⋅ft16.23–22.13 lbf⋅ft22–30 N⋅m

expand_moreEngine lubrication


Oil drain plug	25.81–33.19 lbf⋅ft25.81–33.19 lbf⋅ft35–45 N⋅m
Oil filter housing	8.85–11.8 lbf⋅ft8.85–11.8 lbf⋅ft12–16 N⋅m
Oil sump	4.43–5.9 lbf⋅ft4.43–5.9 lbf⋅ft6–8 N⋅m
Gradually tighten screws crosswise.

expand_moreEngine management


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


All Hyundai gasoline straight-4 1.0 Liters G4HC engines	29.5–36.88 lbf⋅ft29.5–36.88 lbf⋅ft40–50 N⋅m

expand_moreExhaust system


Exhaust manifold	11.06–14.75 lbf⋅ft11.06–14.75 lbf⋅ft15–20 N⋅m
Replace nuts.

expand_moreIgnition system


Spark plugs	14.75–22.13 lbf⋅ft14.75–22.13 lbf⋅ft20–30 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1999 Hyundai Atos Prime 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 Hyundai 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 Hyundai Atos Prime 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 1999 Hyundai Atos Prime you're not only saving money, but also also improving your technical skills and learning something new.

1999 Hyundai Atos Prime First generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Hyundai Atos Prime First generation model years

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