Fighting FPR issues
Thread Starter
Instructor
Joined: Dec 2023
Posts: 166
Likes: 73
From: Indiana
Fighting FPR issues
I replaced the in my FPR and diaphragm and I'm having issues holding pressure after the key is turned off. Holds pressure fine when I pinch off the return line. I've taking it apart twice and don't see any defects. No external leaks. What could be causing the seat not to close off the return port? Very strange. Pressure jumps to 40 psi then after turning the key off it bleeds down to maybe 10psi..the slowly drops to zero. I'm temped to try another diaphragm..but they are like $100 and don't see anything wrong with the new one I got. Any ideas?
Could the fuel pressure be overriding the spring pressure?
Here a vid. Maybe this is normal function based on reading posts?
https://youtu.be/KHS_HZKUlj8?si=QRrK466YnUvQKm2Y
Could the fuel pressure be overriding the spring pressure?
Here a vid. Maybe this is normal function based on reading posts?
https://youtu.be/KHS_HZKUlj8?si=QRrK466YnUvQKm2Y
Last edited by Kjdad; Jun 12, 2024 at 12:58 PM.
Drifting
Joined: Jul 2022
Posts: 1,805
Likes: 365
From: Central Florida
When you installed it, it didn't sit flat until you tightened the screws and compressed the spring correct ??
The metal ring, that helps hold down the outer edges of the cover, is on top of the cover and not on bottom right ??
Was it well centered when you installed it ??
Stock cover or adjustable ??
The metal ring, that helps hold down the outer edges of the cover, is on top of the cover and not on bottom right ??
Was it well centered when you installed it ??
Stock cover or adjustable ??
Last edited by Vets-Vet; Jun 12, 2024 at 05:21 PM.
Thread Starter
Instructor
Joined: Dec 2023
Posts: 166
Likes: 73
From: Indiana
When you installed it, it didn't sit flat until you tightened the screws and compressed the spring correct ??
The metal ring, that helps hold down the outer edges of the cover, is on top of the cover and not on bottom right ??
Was it well centered when you installed it ??
Stock cover or adjustable ??
The metal ring, that helps hold down the outer edges of the cover, is on top of the cover and not on bottom right ??
Was it well centered when you installed it ??
Stock cover or adjustable ??
