My write up is about how I encountered a big issue with my silvia. I was having so much issues one day when I turned on my car, the initial start was hard as it kept turning right back off. Then when it started the idle would go near dead.
First I thought it was a vaccum leak, but it wasn’t. Changed distributor cap due to it was cracked at the top, changed rotor due to it was time to change it.
Then checked the ECU codes, Z31 was telling me that the Idle air control vavle is bad. So I decided to down grade to the SEv6 Maf and ECU. With this the idle is better but not much. Checked the codes witht he sev6 ecu and turns out the Fuel Temp Sensor in the FPR is bad and Cylinder Head Temp Sensor is also bad….
So went a head and done a timing belt change, CHT Sensor changed, replaced the FPR, and timing belt pully.To see if that helps in anyway but it did not change anything. Did a full tune up plugs wires, and did not change a thing.
So after all of that it accrued to me that the issue has to be the distributor.
Because:
- The rotor cap was broke in a spot where the rotor was hitting
- When I removed the cap, I can lift up and down on the rotor.
So I pulled the distributor to check, I wasn’t to sure if the distributor is supposed to have this much play if at most any play at all. So I called a buddy on that and sure enough that is the problem. I went to the junk yard and picked up a matching distributor from a z31 and when I installed it, the car now idles perfectly.
I have made a few videos with my phone to help figure this problem out.
Here is a video after installing the new distributor.
