Iv,e been searching on ebay for a long time for a book called ( How to tune and maintain Bosch Fuel Injection systems, by Ben Watson ) first printed in 1992, and at the time it was expensive. Today they are even more so, anywhere from £30 up to £75

.
On Thursday I got a reply from ebay with suggested one,s available, I was amazed when there was a copy as new for £8. 99p, + post £2.50p It arrived yesterday and is in as new condition, a good investment both usefully and future sale.
It covers Bosch Motronic and Jetronic injection systems Inc D, L, LH, K and KE-Jetronic systems.., and a bonus it,s not overly complicated to understand (which is good for me ???)

happy days !
Ken