Hi,
Fiddling about with my recently acquired 89 RR I realised the rotor arm was stuck on the distributor. In fact the the spindle was so rusty the rotor had also split. The mechanical advance/retard mechanism was also rusted solid. So, distributor stripped, rebuilt and refitted I find to get the TDC timing required the vacuum capsule is up against the back of the water pump casing. This means althought the timing is correct there is no way it can be advanced further ( e.g. for LPG ). I've checked the pulley timing marks and they seem correct relative to No 1 piston.
On to the questions :
The book states the vacuum capsule should be approx 90 deg to the cam. Is it possible the cam chain is a tooth out or maybe the camshaft end float is wrong ?
There is a vacuum delay valve fitted in the pipe from the plenum . This seems to be completely blocked in one direction. Should there not be some leakage through it ( the book says something about 240 to 360 seconds, 8 mins after I put my foot down something happens ? )? There does not seem to be any vacuum advance at idle.
thanks in advance, Wafty