8
6 General Notes / Troubleshooting
Only use interference-free caps for the spark plugs! Recommended are NGK caps with 5 kΩ
internal resistance.
Doesn’t start:
If the engine should not start, or the engine kicks back, then the ignition
coils are mixed up. If so, swap the ignition cables which lead to the spark plugs or reconnect
the external ignition coils. As a general rule: each time when a piston reaches TDC also
the corresponding plug must have a spark. To check the cable connecting and the supply
voltage turn the rotary switch to ’0’. Now the spark plugs must ire continually. If now the
rotary switch is turned again on a level you can easily check the timing with a strobe only
by activating the starter (without plugs in the cylinders). If the engine should not start with
slowly turning starter, probably the battery voltage falls under the minimum supply voltage
of the ignition (approx. 7 V).
Irregular engine cutouts:
If sometimes the engine suspends while driving for 2-3 seconds
and keeps running thereafter normally. That means that the ignition has been reset. The
cause for it can be a defective cap or a loose ignition cable in the coil or cap. But in most cases
a bad contact in the operating voltage supply (kill switch, starter lock, fuse holder, terminals
etc.) causes this efect. For a test you can connect a cable directly from the ignition coils
and the ignition box to the positive terminal of the battery. Also put a second cable from
the negative terminal of the battery to the ignition box (secure ground connection). If the
engine is running well now you can assume an error in the wiring harness. With contact
breakers such a bad contact is not noticeable, because a short break for a few milliseconds of
the supply voltage doesn’t matter, electronics in contrast are more sensitively.
Elektronik Sachse GmbH & Co. KG
Busestraße 26a
28213 Bremen
Germany
phone: +49 (0) 5409 9069826
email: [email protected]
