From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Response to a query regarding misfiring caused by Ethyl affecting sparking plugs, with a summary of recent complaints.
| Identifier | ExFiles\Box 130\2\ scan0037 | |
| Date | 9th July 1936 | |
| X1113 K/W. HS{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} K/JBD{John B. Dixon - Fuel Systems}/9.7.36. In reply to your query regarding the use of Ethyl affecting Sparking Plugs and causing misfiring, I am unable to find any case of this complaint at Kingsbury since the 850.KLG plugs were fitted to replace the 750.KLG, with the exception of the case of B.34.GA, which you are already investigating. This car has been here since the 850 plugs were fitted for a brake complaint. The tester noticed misfiring and the plugs were cleaned and the misfiring cured. I give below the sparking plug complaints for the last two quarters:- MARCH QUARTER, 1936. C.C.29. 850 KLG's now being fitted. C.P. 6. JUNE QUARTER, 1936. 850 KLG Plugs. C.C.Nil. C.P. 1. (34.GA). JBD.{John B. Dixon - Fuel Systems} | ||