I finally finished my build, got it dyno tuned, separate trips on different weekends to the get the exhaust done as well as the alignment. Went to go start it this afternoon and it won't start.

Heres the rundown.

91 Civic Si. Tuned on s300, starter was tested, new alternator, battery has 12.5, and the fuel pump kicks on. The clutch switch is good (replaced the plug) and it has a full tank of gas. I have driven it a few times when it was on a base tune and fully tuned and never had issues. I suspect maybe my Odyssey PC680 doesnt have enough cold cranking amps, but i havent seen any feedback that it doesnt for other people that us it. the battery cable are only 2 feet long and the battery is still in the engine compartment. I have the rywire harness and will try putting the two wires together to see if it comes up with a code, but other than that I am stumped.

Any insight is appreciated.

 

0 useful information. Does the car crank, if so does it have fuel, if so does it have spark, if so does it have compression? Start there and report back. These are the basics of troubleshooting a car that will not start. This is not an all motor question.

 

exactly.

It takes 4 things for an engine to run.

obviously the engine needs to be able to spin by the starter (turn over) but the 4 main things needed are:

Compression, fuel, fire, cam/ignition timing

You are missing one or more.