Could volcanic ash damage my bike engine? Oliy flames

We are not sure if diesel or petrol engines are susceptible to volcanic ash. They have a sort of air filter but we are not sure if it will remove this dust.
On Friday, October 25, 1666, the famous English astrologer William Lilly was ordered to appear in the Speaker's Chamber of the House of Commons to give testimony before the special Committee set up to examine the cause of the great fire which had devastated the city of London in September. Lilly, it was claimed, had successfully predicted the outbreak of the fire fourteen years before when he had published Monarchy or No Monarchy in England a book containing nineteen hieroglyphic drawings giving carefully disguised predictions. As a consequence of one of these, featuring a large fire (see figure below), Lilly was seriously suspected of causing the fire. It was also thought that he wished to obtain credit for forecasting the event. Being fearful of what might happen to him, Lilly persuaded the committee that his prediction had not been precise and he was allowed to go.




For over three hundred years Lilly's hieroglyphic prediction of the Fire of London has been dismissed, even by astrologers unable to work out his code, and no one has attempted to interpret it. Now, however, the code has been deciphered and the hieroglyphics shown to be a disguised horoscope for the moment of the outbreak of the great fire on Sunday, September 2, 1666.





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THE SECRET CHIEFS
meet on alternate Monday evening,
doors open 7:30pm, lecture starts 8:30pm.
Admission is £2 (£1 concs). All are welcome.
Upstairs at the Devereux Public House
20 Devereux Court, off Essex Street,
(between Middle Temple Lane and Milford Lane)
The Strand, London WC2R 3JJ
(From Victoria Embankment the nearest tube is Temple underground station, on the circle line