What are distributor problems?
You may need to have it rewired or have it replaced.
There is no distributor cap or even a distributor on these engines since the 6 plug wires are connected in pairs directly to 3 coils on top of the ignition control module. This module energizes and "fires" the coils electronically without the need for a distributor. If you suspect ignition problems check plug wires first, then plugs, then the module and coils.