Ok, I have posted before about a miss/hesitation in my almost bone stock 90 LX 5.0 5spd. I have tried a few things and I still have a quite a few more things to try/test but I wanted to tell a little bit more to see if anyone has had the same problem and could direct me on something else to test.
The problem: The car has a miss or hesitation under load. It seems to run ok at idle but it doesn't always seem to be smooth, like a very very light miss occasionally. Timing seems to affect the miss while driving but does nothing for idle. The car was set at about 16 degrees initial (93 octane)and drives ok under part throttle and cruising, but shows a distinct miss or stumble when you put the gas to the floor. I have since reset the timing to 11-12 degrees and the miss/stumble is much more noticeable. So much that when you put your foot in the gas more than half throttle, but seems like it hits a wall and misses badly.
So far I have checked for vacuum leaks, replaced the fuel filter, cleaned the IAC, and cleaned the 10 pin connectors. None of the listed things helped at all, only adjusting the timing seems to affect the miss. My next steps are to check the fuel pressure, check the TFI, MAF. A visual inspection of the plug wires seem ok, no damage, but I do hate the straight boots and MAC equal length headers the previous owner installed.
Anyone have an experience like this? Any suggestions other than the ones I've listed?
The problem: The car has a miss or hesitation under load. It seems to run ok at idle but it doesn't always seem to be smooth, like a very very light miss occasionally. Timing seems to affect the miss while driving but does nothing for idle. The car was set at about 16 degrees initial (93 octane)and drives ok under part throttle and cruising, but shows a distinct miss or stumble when you put the gas to the floor. I have since reset the timing to 11-12 degrees and the miss/stumble is much more noticeable. So much that when you put your foot in the gas more than half throttle, but seems like it hits a wall and misses badly.
So far I have checked for vacuum leaks, replaced the fuel filter, cleaned the IAC, and cleaned the 10 pin connectors. None of the listed things helped at all, only adjusting the timing seems to affect the miss. My next steps are to check the fuel pressure, check the TFI, MAF. A visual inspection of the plug wires seem ok, no damage, but I do hate the straight boots and MAC equal length headers the previous owner installed.
Anyone have an experience like this? Any suggestions other than the ones I've listed?