TPI TERR

iTrader: (9)

a while back my car was runing like **** i was thinkin it was my ecm but found out that my 8th injector was giving out after i took it to get diagnosed. well my car felt really weak after 4500 rpm and so on it sputered. so i changed my all my injectors to 24 lbs then the car ran better than ever. bad thing it came back im thinkin something is damaging an injector beacause it has the same symptoms and its acting up again. waht can i do? could it be the wiring for the ecm maybe a short or the fuel pump burn off relay? i was lookin at it closely and the plugs for the realy near the firewall look quiet old!! any ideas?

Danno

First thing to do is check fuel rail pressure. Tuned port systems run around 40-47 psi. Leaky injectors are usually caused by dirt in the system. Try running a can of GM top end cleaner. You could have an ignition problem, arcing cap, bad wire or fouled plugs. You could have an intake maifold leak. Start with the fuel test, any fuel inj system, pressure is critical.