spark plugs AUDI A6 1995 C5 / 2.G AHA Engine Motronic Ignition System Workshop Manual

28-1
Motronic ignition system Technical data, spark plugs

Engine code
AHA

Engine idle RPM

Idle RPM cannot be adjusted, is corrected by Idle Air Control (IAC) 620 - 740 RPM
(all-wheel drive)
740 - 860 RPM
(front-wheel drive)
RPM limit
Operates by shutting off fuel injectors approx. 6500 RPM
Ignition timing
Ignition timing cannot be adjusted; it is determined by the Engine Control Module (ECM)
Firing order 1-4-3-6-2-5
Spark plugs Tightening torque 30 Nm (22 ft lb)
Part No. 1) 101 000 035 HJ (NGK)
Manufacturer's code
(if applicable) BKR 6 EKUB (NGK)

Electrode gap - mm 1.6 mm

Maintenance interval Owner's Manual

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Checking

- Check DTC memory page 01
-16
.

There must be no malfunctions stored

- If DTC memory is not clear (malfunctions
recognized):

- Make necessary repairs and erase DTC
memory.

- Stop engine and start engine again.

- Road test.

- Check and erase DTC memory again.

- By briefly disconnecting fuel injector connectors
with engine running, check which cylinder is
misfiring, or not firing at all.
A misfiring cylinder can also be isolated by
examining the spark plugs (for a carbon-fouled
plug).

-
Interchange spark plug with one from cylinder
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Checking ignition coils -N-, -N128- and -N158-


- Disconnect 5-pin connector from ignition coil
assembly.

- Remove ignition wires from spark plugs.

If resistance is NOT OK: - Using multimeter and adapters from VAG1594 connector test kit,
measure resistance between both spark plug connectors of respective
ignition circuit (across coil).

Specification: approx. 18-25 k .- Remove ignition wires from ignition coils and measure resistance
between ends of respective ignition wires.

Specification: approx. 4.0-6.0 k
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pair&id=AUDI.B5.FU03.28.1