Reckless95z

I have a hot start problem with my lt1 355 Hot cam, ported heads, headers full exhaust. It fires up beautiful when it's cold overnight. As soon as I drive it and shut it off and try to fire it back up it cranks for a 5-10 seconds then fires up. I changed the fuel pump to a walbro 255 new fuel filter checked all the fuel lines. New fpr has good fuel pressure but does bleed off quickly about 20 minutes. New opti coil plugs and wires. Also car has 32lb accel yellow top injectors in it now. I pulled off the fuel rail did a prime no noticable fuel leaks. If I buy new injectors that are 32lb would I have to changes ecm constants it's tuned now in tunercats for the 32lb . also I tried playing with prime pulse width vs coolant temp and timing, IAC park position etc with no luck. Thanks in advance

Mike

beaver50

I had a problem close to this.It was my ignition switch down on the column.