Q45tech wrote:I have a trick which shows if a rail flush will help: Use non biting pliers to close off fuel return rubber line in repeated but very short [ a second closed then wait 3 and repeat 10-15 times to raise rail pressure from 34psi to 60-70 psi to force trash thru the injector screens ----- fleck off carbon/deposits from injector tip..............does power balance ratios change? It should get temporarily better.
Usually helps without doing much fuel pump damage [pump has it's own blow off high pressure valve]. After all the pressure rises to 43.4 psi under acceleration.
Is the fuel system (rubber fuel lines and injectors) designed for that amount of pressure?
Why would the problem temporally go away? I would think that if they were clogged and this unclogs the injectors=problem solved.
I will try this since my fuel pump is already on its way out and yes I have another well a couple other FPCU's.
