Originally Posted by Terry Sikora
+1 on a vacuum leak, also check around your evap canister/return line if you have a evap canister.


Originally Posted by Stephen Richardson
You Fuel pump should cycle for 2 sec when the first turned on your cel will also illuminate for 2 sec thes is it bulb check.

You can verify by listening to your MPI relay it will click when you cycle the key to ON and click off in 2 sec at the sametime the CEL goes out.


My 2g does NOT prime the fuel pump until I actually crank the engine, this is normal on MOST cars like my Civic but I think Mitsu did this on purpose as some sort of 'safety' precaution.



Terry could be right. I would have to see the wiring diagram, I only have a 97 spyder diagram and they use a seperate MPI relay and fuel pump relay.

I don't know what kinda safety precaution it is, priming the fuel pump actually helps with cold starts. Maybe because the Spyder is american they wire it different.

But Mike if you jump the relay you can the run pump till you blue in the face or your battery dies.


I don't know about a vacuum leak usually they cause higher idle not misfires.

What kinda tuning logging setup do you have Mike?

Last edited by Stephen Richardson; November 14, 2012 12:26 am UTC.