Black Box V5.1 Guia de Resolução de Problemas descarregar pdf (Página 41)

Euro MotoElectrics, 25958 Genesee Trail Road PMB 321 Golden, Colorado USA 80401 EDL-IGN Page 41 of 43

www.EuroMotoElectrics.com info@euromotoelectrics.com Tel: 1-303-526-0901

EnDuraSpark Electronic Ignition

Installation & Troubleshooting v5.1

Troubleshooting – Poor Performance (continued)

Check Correct Ignition Wires

Up until 1976, BMW Airhead high tension circuits had separate parts: wires, caps, and rubber

boots. Later models had a single integrated wire/cap. The original BMW ignition wires were

Hypalon covered copper core non-resistor wires with a resistance of about 2 ohms per foot. They

will last about 10 years before becoming hard and non-flexible. Replacement silicone wires will

last forever and are not affected by heat, gas or ozone.

Complete sets are available through Euro Motoelectrics:

Part # BMW-WS/AIRHEAD ( 16 inch leads)

http://www.euromotoelectrics.com/BMW_R_Airhead_2V_Ignition_Cable_Set_Silicon

e_p/bmw-ws-fslash-airhead.htm

Part #: MG-WS/30 (30 inch leads)

http://www.euromotoelectrics.com/Moto_Guzzi_Spark_Plug_Wire_Set_Silicone_30_i

nch_p/mg-ws-fslash-30.htm

It is important that copper core wires are used, not the carbon powder center ones normally sold

at auto parts stores.

Check Spark Plug Caps

Spark plug caps should be 1K or 5K. The original caps on 1970-1978 Airheads were 1200 ohms.

1979-1995 Airheads had integrated zero resistance wires and 5K caps. The original BMW Beru

caps had a metal suppression shield around the cap. With age, the Bakelite in these caps can

crack. This can't be seen because of the shield. It isn't detectable with an ohmmeter test, but the

cap will arc with a carbon path short circuit under high voltage.

A good spark plug cap for use with the EnDuraSpark Electronic Ignition is the NGK LB01EP.

These are 1K caps with waterproof (designed for watercraft) boots at each end. They are more

reliable than either the separate component BMW/Beru parts or the later integrated wire and cap.

All Airhead points & condenser bikes can use 1000 ohm NGK caps. They should be installed with

a slight smear of dielectric grease under the boots (not in the coil tower or cap terminal!) This

adds an additional barrier for water and prevents voltage leaks. Only use silicon grease; oil-based

greases are conductive.

5K spark plug caps, such as the NGK LB05FP, can also be used with the EnDuraSpark Electronic

Ignition. 5K caps can make a marginal ignition system on a cold engine harder to start compared

to 1K caps. For an ignition system in good shape, however, there is no difference between 1K and

5K caps. Non-resistor caps should never be used on an Airhead.

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Black Box V5.1 Guia de Resolução de Problemas Página 41