Hello,

I have been having issues starting my 85 camaro z28 w/ TPI. I have yet to have it not start just sometimes it seems like it takes a while for it to start 5 to 10 seconds of holding the key forward. I pulled out my gauges and hooked it up the port to check my fuel pressure, when i flip the ignition to the on position without starting it shoots up to 35 then slowly drops to about 6. When i start the car it jumps to 35 and stays steady at 35.

I though when the car was in the on position the fuel pressure should stay at its running pressure, and is 35 low fuel pressure? Thanks.

 

I think 35 is kinda low for a TPI car, but I'm no TPI expert - replace the fuel filter and see if that helps - if it's been over 1 year, you need a new one anyway.

When you turn the key, the pump primes for 2 seconds, but doesn't stay running until after the car is started, so you get a spike, then it'll go down, then go back up and stay after car is running - that is normal.

 

thanks ill give that a try in the next day or two. The in line filter is located on the underside of the car close to the drivers door correct?

 

Yes the filter is along the drivers side door. Also, the fuel pressure for the TPI should be around 45 psi.
Hope that helps

 

I appreciate the help, ill let y'all know the results.

 

I may be wrong, but I believe that 35 pounds was normal for 1985,86 TPI engines. GM raised that to 45 pounds in 1988. Again, I may be off on the years. Anyway, I found that they run much better at 45 pounds, and all it takes is an adjustable fuel regulator. Good luck!