Finished doing the tbi/tpi swap and the engine wont start. I`ve checked the timing to make sure its not 180 off, checked that it was getting spark. How would I go about checking to see if the injectors are pulsing or what not? Also any other idea`s would be helpfull.

350 bored .020
zz4 heads
zz4 cam
25lb slp injectors
stock tpi setup
walbro 225 fuel pump
ajup chip

 

you can take a test light and see if it is lighting up. you can check my homepage under the thirdgen section or do a search on here.

 

If the brake hose is not connected to the plenum, would that cause it to not start? Also, the map sensor vacumn line, does it need to be a certain size or does it matter?

 

there are many variables plug up the port on the manifold. And the hose size to the map doesn't matter.