Amab145
Member
- Joined
- Sep 30, 2013
- Messages
- 77
I have a double pumper setup with a pair of DW300's that normally at cruise/idle are around 45psi. This morning out for a cruise I noticed the car seemed to have a rough idle and wanted to stumble slightly at lower RPM's. I have an XFI with the eDash and saw that o2 correction was 10%+ and was really struggling to maintain proper AFR. I also have an electronic Autometer fuel PSI gauge and noticed it was around 23-25psi at cruise.
My thought is since the fuel pressure dropped by almost exactly half of normal cruise and idle PSI, one of the two pumps quit. Before I go dropping the tank, anyone have any suggestions where to look first? If it was a fuse/relay/wiring issue wouldn't the whole DP setup just quit all together? Are these pumps prone to failure? DP setup is around 4 years old but doesn't have 1,500 miles on it.
Car has -8 pressure line which flows through an Aeromotive stainless filter then splits at the engine to Champion billet fuel rails. Running VP C12 for fuel. Regulator has a -6 return line to tank and is the location where the fuel PSI gauge is located. Thanks in advance!
My thought is since the fuel pressure dropped by almost exactly half of normal cruise and idle PSI, one of the two pumps quit. Before I go dropping the tank, anyone have any suggestions where to look first? If it was a fuse/relay/wiring issue wouldn't the whole DP setup just quit all together? Are these pumps prone to failure? DP setup is around 4 years old but doesn't have 1,500 miles on it.
Car has -8 pressure line which flows through an Aeromotive stainless filter then splits at the engine to Champion billet fuel rails. Running VP C12 for fuel. Regulator has a -6 return line to tank and is the location where the fuel PSI gauge is located. Thanks in advance!