• The failure rate of our material is less than 0.1%.
• 95% of material returned to us for checking as assumed to be faulty is absolutely working normally.
• In the vast majority of cases customers contact to us that they have no or only a weak spark ignition is working properly, but general setup of the motorcycle is faulty or they try to test in unsuitable ways

At any rate do refrain from measuring the electronic components (such as ignition coil, regulator and advance unit). You risk severe damage to the inner electronics there. You will not get any tangible results from the operation anyway.

• Ground, ground, ground. Problem number 1 is bad or missing ground! this can not be stressed enough. Though we warn in our instructions not to rely on the frame as electrical conductor many customers do so - and get problems.
• Problem number 2 are spark plugs and/or spark plug caps.
  Here we hear again and again that new ones had been used, plugs tested in other engines have been used etc.
  Still, this is a major problem. See info here
• Blue wire, blue wire, blue wire. Very many problems are connected to blue kill wire and cut-off relay.
  relay is wrongly connected to the main switch and does NOT bring the needed voltage - as a result ignition remains off. ground connected to the blue switch off wire by a defectice kill switch, unsuitable relay, damaged wire, shorting somewhere to ground. We even had customers who thought the blue wire has to be connected to ground by design.
• carburettor, carburettor, carburettor. we read again and again "i can exclude the carb, it is new, it has been redone, it has been cleaned" only that the customer found at the end that indeed it was the carburettor (and/or the air filter).
• main switches are a reason also, bad or wrong switches are rather frequent (notably in the age of chinese replicas).
• Wrong understanding of how high energy spark looks like and unsuitable testing methods leading to such findings as "i have only a weak spark"
• Very many customers suspect the regulator when they encounter ignition problems.
  the regulator however does not have any role in ignition. Only connection between lighting and ignition is - so installed - the relay. See info here
  
• As the customer would have just installed the Powerdynamo ignition, he tents to suspect it as the cause for engine starting/running problems. Experience however shows that in most cases causes for problems are not in ignition material, but other engine aspect.  
• If your engine sports increased compression, changed stroke, changed timing etc than you should not be surprised that you encounter problems. Our material is made for stock configurations, not unknown tuning configurations.

• Number 1 problem is faulty wiring in motorcycle grid outside Powerdynamo system
  Here nothing is impossible. After all, you have an old motorcycle with often unknown past.
  Frequent finds have been:
  
  - missing wire from new regulator plus and/or battery to main switch (very frequent!)
  - bad or wrong main switch and terminals of same
  - bad batteries which consume all produced energy but do not load (internal short circuit) - quite often!
  - We had short circuits on tachometer bulb inside tachometer that happened when bulbs got changed
     from 6 to 12V, so problem was not visible before
  
• Problematic is always when motorcycles had originally both alternating current (AC) for headlight and possibly taillight as well as direct current (DC) for battery charge and flashers. Those two part grids have to be combined in the fully DC environment of the Powerdynamo (except AC systems). This problem can be really tricky. We will gladly assist the customer in this if we get a copy of the original wiring from him.
  
• often there are dead batteries on board (sometimes even shopnew dead ones). they will burn all arriving voltage into heat, forcing the system to break down.
  
• one of the black wires for lighting might be damaged under the stator coil and shortcircuit to ground (notably in internal sensor units)

• note that welding may damage electronics
• crimping of replacement terminals is often not good without access to proper tools
• re-wiring always bears the danger of short circuits and wire mix ups!
• last not least we always have additional efforts to test such material as connectors are not standard any more (if not missing at all)
  
• it is simply not understandable that first things many customers do during installation is to cut of our plugs only to install badly connected material.

• battery low?
• carburettor blocked by dirt particles?
• petrol over the moon (it ages very quickly!)?
• airfilter moist?

• mostly spark plus and cap issues
• carburation issues (pressure inside carb due to heat)