Since I got my 84 Its had a very present stumble at idle. So far I've replaced the cap/rotor, spark plug wires, new ngk plugs gaped to .36, deleted egr valve, got new lower shores 850cc injectors to replace the leaky stock ones, and fixed a couple minor vacuum leaks coming off the tb ports. Since then I've also went around the entire car with a propane torch trying to find additional leaks, but couldn't find any. compression is an even 130 across all four cylinders. Like I said the stumble is very present and causes the car to shake slightly at idle. Please help, I'm gonna go crazy!! Dan