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).
Investigation into a Phantom III with difficult starting and poor idling issues when hot.
| Identifier | ExFiles\Box 96\1\ scan0090 | |
| Date | 16th April 1937 | |
| Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 361 Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}7/JH.16.4.37. Phantom III Difficult starting when hot. Chassis 3-AX-21. Customer Mr. Rossage. Cricklewood. Car tested on road accompanied by Mr. Fisher, Stromberg representative and owners driver. Engine; good slow running. Owner very critical on slow running and soon complains if he can geel the engine idling when occupying the rear seat. Car ran well for the first 5 miles until warmed up on the byepass road for a further 2 miles. The idling then began to fail intermittently with one cylinder dead out. Car returned to depot and rocker plungers bled on both banks O.K. On completing B bank, good idling returned. All rocker shafts and plunger units were then dismantled and cleaned. Rocker filter cleaned and oil changed. Complete set of K.L.G.FE.30X sparking plugs fitted. Boscg plugs removed were badly carboned up but did not misfire; these were handed over to Cricklewood. Carburetter checked O.K. Level inspected for incline O.K. .050" higher at pump well than at float needle; this gives .200" below top of discharge tubes, before flooding into manifolds. Maximum increase in floatchamber as measured on 32-EX is .200" to .250" at highest temperature. This occurs within four minutes with the standard layout when stationary. Drain ball valves examined and both were found to be solid with carbon. New ones fitted complete. | ||