Hey everyone. So i have a 86 accord lxi hatch and its been giving me problems. Since I got it it was okay and when I drove it it was fine until it gets warmed up it starts losing all power past like 2k-3k rpm ill step on the gas and it wont go it sounds like its dying or going to cut off if i push on the gas. Its gotten worse now it has a heavy misfire and Im not sure what the problem is. I have replaced the injectors, spark plugs and spark plug wires, o2 sensor, and cleaned out the distrubutor cap and rotor. Only thing I havent changed is the whole distributor itself. I should also mention I took off the original exhaust off and hadnt replaced it yet and it was fine for a bit (it increased the rpm and response for sure)but im not sure if it can cause some weird idle issue if its off or not. My car used to run fine but when I start it up it sounds like a tractor now, its not knocking but its misfiring like crazy and I cant figure out why. Also I can hear a slight hissing in the engine bay like maybe there is a vacuum leak but im pretty sure I ran through all of the hoses and found no leaks or cuts of any kind. Has anyone experienced this before on thier accord? Thanks in advance.