91 Civic Tuned on Hondata s300
Recently put a turbo kit on the car and ever since, once driving for 30 min or more the car will crank consistently but won’t start up again until it cools down. Starts fine cold. I’ve done a bunch of tests:
-New Distributor (checked spark with tester- very strong spark)
-Has fuel pressure (I have a gauge on regulator)
-Good compression 175 across all 4 cylinders
-Main relay checked and is good- fuel pump turns on and relay clicks every ignition cycle.

Any ideas?

 

How did you check the main relay? Likely causes are ignition or main relay. What do the plugs look like when it does not start? Wet?

 

it’s not the main relay. Distributor was replaced and has strong spark. Plugs are slightly fouled out from being lean before the tune, and those will be changed out soon. There is a little oil in the cylinders, and plugs are ‘damp’ but not soaked by any means. No fuel in the cylinders,
just a bit of oil. Compression is 175 in all 4.

 

Check the diagrams again - injectors run through the main relay, not just the pump.
So. How did you check the main relay?

 

pulled it apart to check the connections. I replaced it as well, but having. The sams issue as before I put the old relay back in. When I say no fuel in cylinder I mean when the car is off. When it starts it runs fine with good fuel pressure. Injectors are brand new ID 1050x.