Mechanic_101

I have a 2004 Pontiac Aztek and it has bad starting compression and it’s been saying misfire for a long time. So we changed the injectors, spark plugs, spark plug wires, the ignition coils/the ignition module and the O2 Sensors and it still says it’s misfiring and it isn’t running like it supposed to. Does anyone know what I need to change or what can I tell the next person that buys it from me?

strutaeng

You've checked compression? What were the pressure psi in each cylinder? They say if the pressure is low and you add a bit of oil into the spark hole and pressure increases then I think it's the rings? Otherwise a leak-down test will better tell you where you are losing air pressure: heads/valves, crankcase or head gasket.

That's as much as you can tell the buyer. Tell him/her what you've changed and the symptoms and they'll need to figure out themselves.

shakenfake

Truck would be an interesting description of an Aztek...