Pinging (pinking) - a cure?

Pinging can be helped by creating a clean combustion chamber with no hot spots.

This can be done by injecting a small amount of clean water into the inlet manifold at a ratio of no more than 26.6 parts of fuel to 1 part of water . (about 700 mils to 20 liters of fuel)

This can be done as follows on both Nikis and 500s.

All the parts are cheap and readily available

Cost $

5 ­ 10      1/4 inch 12 volt solenoid as used in gas systems.

0 ­ 10      Motor mower carby float bowl (c45 victor)

0 ­ 2        One way valve from windscreen washer system

12           Small needle and seat from model plane (model shop)

3             3 ft. of 1/8th inch heat resistant silicon tubing   

1 ft. of 1/8th inch copper tubing.

Smear of silicon

Fish tank aerator for filter

 Reservoir for water (plastic bottle)

 




•By pure co-incidence I came across the advertisement below from the Modem Motor magazine of September 1957 on the same day as Richard sent me his article. It shows a unit with similar outcomes as Richard's. Water (vapour) injectors have been around for ever and were apparently used on VWs especially in Europe. (Tony Potter)