long time to start hot or cold? fuel?

[tigmaned]

long time to start hot or cold? i am thinking fuel?

been noticing my 86 vette seems to take a while to start? at first i thought it was just after i was drving it and the engine was warm. but it sat for a couple of days, i tried to start it last night and it took a while to turn over and seemed to puff out some smoke once it did start, not sure if it was to much fuel or not. i need to check the fuel system? i have fuel pressure gauge from my last GM fuelly truck i owned and had a in the tank fuel pump problem with it and was the $400 fuel pump that was bad. my 86 vette has 85K miles, and a new exhaust system with brand a new cat and mufflers. i have changed plugs, cap and rotor so far, wires look o.k.? i haven't checked timing yet, been a while since i had the car that needed a timing light and found out the bulb in mine is burned out?? I did adjusted the IAC, and set TPS at .54 volts.

 

[Moonunit 451]

What is your fuel pressure? Have you changed the fuel filter? The fuel pump is a fairly easy change, but I'm thinkin' 9th injector or other possible injector problem. You can check the injector pulse widths as well.

 

[tigmaned]

ah the 9th injector, it called the cold start injector, right? how easy is that to change if thats it, its what under the injection pelnum right? i will check my fuel pressure asap. i have a new fuel filter waiting to be put in, just haven't gotten to it yet?? with the key in the on position the fuel pressure should between 41 and 47psi? how long should it maintain that pressure? then start the vette and check fuel pressure. i will check my service manual on this to make sure.