I suppose you could try a light coating of sealant as belt and braces

Aftermarket coils are cheap but quality can be dubious....would stick to German produced parts or OE if possible. not sure of exact costs but could look on Eurocarparts as they offer huge discounts periodically

Cheers Pal. Looked a peach of a car - immaculate condition, but once I read a couple of horror stories about the N43B20O0 engine and common injector / coil problems, I was kind of hesitant. Would know you the cost of injectors and coils for BM's. Thanks,
Jon.

Ive changed that

Not sure but maybe worth seeing that they are free....gently pull it up and see if the jets are blocked