how do i remove the fuel pressure regulator from my 95 astro? it has the plenum. i cant even see the regulator from the front how is the best way to do it? dog box ?

You undress the top and front of the plenum and unbolt it and lift it off- do you have symptoms of a bad spider assembly- or a leak down?

it wont start but it fires. sometimes runs for a few seconds. i pulled iac but still messed up. will start right away with a spray of eather but only runs rough for a few seconds. i dont know symptoms of spider or leak down. i do know the spider has been changed once awhile age. acording to pre owners records

Check fuel pressure and leakdown before you take anything apart. It will tell what the problem is and save you a bunch of time and money. Key on, engine off, fuel pump running, fuel pressure must be 60psi to 66psi. Must remain above 55psi for 3 to 5 minutes after the pump shuts off. Post your results.