Injectors

Hi,

I've changed all 4 injectors on my '89 Gti Cabrio.
New ones were £55 each.
I've seen a few posts suggesting they can be cleaned.
If anyone wants to buy the old ones to try to clean up, let me know.
I tested 3, 2 didnt spray cleanly, so decided to change all 4, so 2 of the 4 could be ok??

cheers