1997 Protege problem
 

Hi

My english is not good, but I'll try to explain the problem as good as I can.

When my car is running on low rpm it starts to fail, like when the sparks are bad, or there is no fuel. We change cables, sparks, clean the injectors, change fuel filter,distributor cap, and the problem doesn't dissaper, My mechanic says that could be de distributor, but he is not sure, and I don't want to spend $100 if it is not the problem. Is there any way to check the distributor without change, or is there any other part to check.

Any comment is welcome. I don't know what to do!

Thanks! (Sorry for my english)