Cold start issues ‘89 C4
Thread Starter
5th Gear
Joined: Nov 2025
Posts: 5
Likes: 3
Cold start issues ‘89 C4
Hey guys! I have a link below to my video of my cold start fuel pressure. Could someone tell me if this is normal? New Delphi fuel pump and sender.
https://share.icloud.com/photos/07dl5c7-LtV30JEATCbq1gjMw
https://share.icloud.com/photos/07dl5c7-LtV30JEATCbq1gjMw
Racer
Joined: Mar 2025
Posts: 485
Likes: 232
Hi Frank,
Welcome. I would expect that the pressure would go down a little slower following the prime. Also, the pressure during idling is hovering around 32 which is a tad on the low side. Prime the pump and pinch the return line to see if it holds prime pressure longer. Could be your regulator.
Cheers,
Rusty.
Welcome. I would expect that the pressure would go down a little slower following the prime. Also, the pressure during idling is hovering around 32 which is a tad on the low side. Prime the pump and pinch the return line to see if it holds prime pressure longer. Could be your regulator.
Cheers,
Rusty.
