TSB-25511-01 Service Bulletin/Repair Instructions

Do this procedure on all the ignition coils.

1. Install the new o-ring to the ignition coil.

Part: 170-441-3237
2. Make sure that the o-ring is positioned after the last thread of the ignition coil, flush to the

ignition coil housing.
Valve Cover Versions

Do a check of the valve cover to find which version that is installed in the vehicle.
Old version
New version
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
5 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
The old version of the valve cover has:

• Aluminum ring

around the ignition coil hole.

• A protruded bolt hole

.

The new version of the valve cover has:

• Composite ring

around the ignition hole.

• A countersunk bolt hole

.

Do one of the steps that follow:

• If the vehicle has the old version of the valve cover. Continue with the next section

Prepare Seal Test of the Valve Cover.

• If the vehicle has the new version of the valve cover. Submit a KATS ticket and do not

proceed with the next sections. It is not necessary to do a leak test of the new valve covers.
Prepare Seal Test of the Valve Cover

1. Make sure that the valve cover has all aluminum rings

installed around the ignition coil

holes.

is missing, submit a KATS ticket with photos on the valve

º If the aluminum ring

cover.

, continue with the next step.

º If the aluminum ring is installed

2. Clean the aluminum ring

and the inside of the hole

with a cloth and brake cleaner.

Consumable: 130-183-6101
3. Clean the surface

on the coil ring tester with brake cleaner.

Tool: 1087135

Consumable: 130-183-6101
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
6 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
×2
4. Apply a thin layer of multipurpose grease on the two o-rings

Consumable: 130-117-4019

5. Insert the coil ring tester into the ignition coil hole.

6. Make sure that the tester is fully pushed into the hole.
.
Note

If you cannot fully insert the coil ring tester into the hole because of glue residues,

remove and correctly install the aluminum ring. Refer to Seal a Valve Cover Ring.
7. Install the coil ring tester to the valve cover with the spacer

together with the ignition coil, and the new bolt

.

Tool: 130-143-0625

8. Do the seal test, refer to Seal Test of the Valve Cover.
, which you removed
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
7 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
Seal Test of the Valve Cover
anti-clockwise to fully close the
100629
Do this seal test on all of the ignition coil holes.

1. Install the coil ring tester to the valve cover, refer to .

2. On the pressure test kit, turn the pressure regulator

regulator.

Tool: 100629
3. Make sure the gauge on the pressure regulator

shows 0 bar.

4. Make sure the manual control valve

, after the pressure regulator, is fully closed.

5. Make sure the manual control valve

, after the digital pressure gauge, is fully closed.

CAUTION

Do not connect the pressure test kit to the compressed air system if the

pressure regulator and the manual control valves are open.

6. Connect the pressure tester to your compressed air system.

7. Turn the pressure regulator

clockwise until the pressure gauge shows 0.50 bar.

8. Open the manual control valve

.
and adjust the pressure regulator

100629
9. Read the digital pressure gauge

is 0.50 ±0.05 bar.
until the pressure
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
8 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
CAUTION

Do not connect the pressure test kit to the coil ring tester if the air pressure is

higher than 0.50 ±0.05 bar. A higher air pressure can damage the valve cover.

10. Connect the pressure test kit to the coil ring tester.
.
100629
11. Open the manual control valve
12. Listen for air leakage and use soap water to makes sure that there is no leakage from the

valve cover. If you can hear or see that air leaks out of the valve cover:

that attaches the coil ring tester. Do not over tighten the

º Try to tighten the bolt

bolt.

º If air still leaks out after you have tighten the bolt, try to remove the spacer

between the valve cover and the bolt

.

If

air

still

leaks

out

after

you

have

removed

the spacer and tighten the bolt. Remove

º

and seal the valve cover ring. Refer to Seal a Valve Cover Ring.

13. Close the manual control valve

.

14. If the digital pressure gauge shows a stable pressure of 0.50 bar, wait for one minute to

make sure that there is no leakage.

º If the pressure stays at 0.50 and the pressure does not decrease more than 0.01 bar

after a minute there is no leakage.

º If the pressure decreases more than 0.01 bar after a minute, remove and seal the

valve cover ring. Refer to Seal a Valve Cover Ring.

Note

Close the control valves

and

before you disconnect the pressure test kit or

remove the coil ring tester from the valve cover.

© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
9 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
Seal a Valve Cover Ring

Only do this procedure if there was a leakage when you did the seal test. Refer to

Seal Test of the Valve Cover.

1. Set the heat gun to 120 °C.

CAUTION

Do not use a higher temperature than 120 °C when you heat the valve cover

ring. A higher temperature can cause damage to the valve cover.

1. Use the heat gun on the aluminum ring for approximately one minute to make the glue

soft.

2. Put a soft cloth on the edge

of the valve cover to protect the surface.
3. Use a plastic prying tool or similar to remove the valve cover ring.

Note

Cover the hole with your other hand to make sure that the valve cover ring does not

fall into the engine bay when it becomes loose from the valve cover.

4. Carefully remove the glue residues and unevenness from the valve cover.
5. Make sure that the surface around the ignition coil hole is smooth.

6. Clean the surface around the ignition coil hole with brake cleaner.

Consumable: 130-183-6101

CAUTION

Be careful when you clean the top surface of the aluminum ring, which seals to

the ignition coil. Damages or scratches on the ring can cause leakage between

the valve cover and the ignition coil.

7. Carefully remove all glue from the aluminum ring.
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
10 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
8. Clean the aluminum ring with brake cleaner.

Consumable: 130-183-6101

9. Apply DP490 equally around the ignition coil hole.

Consumable: 130-114-1011
10. Attach the aluminum ring to the valve cover.
11. Push and turn the ring approximately 10° in one direction and then approximately 10° in

the other direction, this to make sure that the empty space between the valve cover and the

ring is filled with adhesive.

12. Use a cloth, plastic tool or similar to carefully remove the unwanted glue around the ring.

13. Make sure that there is no glue on the top surface of the aluminum ring, which seals to the

ignition coil.

14. Make sure that there is no glue within the ignition coil hole.

15. Remove unwanted glue.

16. Let the glue cure, refer to the manufacturer's manual.

17. When the glue has cured, do a seal test to make sure that there is no leakage. Refer to

Prepare Seal Test of the Valve Cover and Seal Test of the Valve Cover
Install

Install in the reverse order.

Note

If the valve cover has aluminum rings. Make sure that you install the spacers on the bolt

that attach the ignition coils to the valve cover.
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
11 [12]
TECHNICAL SERVICE BULLETIN

Doc. ID TSB-25511-01

Model Jesko

1091593 (Parts)

Kit

1087205 (Tools)
Warranty Information

If the repair is covered by the warranty terms, refer to Koenigsegg Warranty Process.

OPERATION

KWO168404, KWO756576, KWO304525

PART NO

Refer to the invoiced kit number
© This document remains the property of Koenigsegg Automotive AB. It is provided with the understanding that it contains propriety i­nformation

and its contents must be handled accordingly. It must not be used for purposes other than that for which it is intended or be disclosed to

­unauthorized persons. It must not be reproduced in whole or in part without prior permission in writing from Koenigsegg Automotive AB.
12 [12]

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