my 95 buick skylark is backfiring and i changed coils and egr and checked wires. on 1995 Buick Skylark

shop has car and it is getting very costly.i have put in fuel pump,filter,egr valve,plugs wires.i am just about to let them keep the car.help me please.i need help.

Asked by for the 1995 Buick Skylark
1 answer
SOUNDS LIKE THEY ARE GUESSING ALSO, SEEK A 2ND OPINION AND DON'T PAY THEM.