Rapid fuel pressure readings
Thread Starter
Burning Brakes
Joined: Apr 2009
Posts: 1,185
Likes: 33
From: Charlotte Michigan
Rapid fuel pressure readings
1993 C4 LT1. Rapid fluctuations on pressure. 39-48 psi. Aerovent adjustable fpr. Just put the bosch 3's back in that fic checked. The multecs were doing the same thing. Fuel pump not that old. Fuel filter about 3 years o)d and less than 4000 miles. No leaks on the injectors.
Replaced o-ring on one fuel line quick disconnect as it felt loose. In the past it wasalways very smooth on the gauge. Haven't tried clamping fuel line at the tank. Never can remember which one is delivery and return. Just can't believe it is the pump.
Any other ideas?
Also no code's thrown.
Replaced o-ring on one fuel line quick disconnect as it felt loose. In the past it wasalways very smooth on the gauge. Haven't tried clamping fuel line at the tank. Never can remember which one is delivery and return. Just can't believe it is the pump.
Any other ideas?
Also no code's thrown.
