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Fuel rail firewall side leaking gas?
#25
why ask that? you ask what will happen with hacking, nobody knows that? I offered it only for a emergency solution(called a stop gap)

the pump pushes steady pressure, say at 30 psi. (FPReg does that)
at wide open throttle up a tall hill, at 95HP the injectors are hard on (max Pulse width), all 4, firing hardest.
during this case, the pressure can pulsate in the rail. ( it sure does)
Point 2? the ECU can NOT SEE this bad drop of pressure, (it's blind, unlike new cars)

this pulsating causes the injectors to under inject and the AFR can go lean, and running lean at WOT. burns valves to a crisp. (risk)
the engineer did all he can to stop lean under load. this is but one part , that prevents lean out.

read, jeff hartmans books. this is covered. well.
http://www.amazon.com/Jeff-Hartman/e/B001IGJNQW


AFR is air fuel ratio, or FUEL MIXTURE.

if driven gently there is no risk. (my guess)
avoid hills. avoid WOT, avoid jack rabbit starts.
also if the filter is near clogged, this pulsation gets worse, and like 1/2 the cars are like this, no service ever.

some cars the damper is part of FPREG, or in the pump.
for sure it is covered in the design, or the pump is so powerful , its not needed at all.(flow specs)
also the pulses can be so fast the FPREG can not respond in time. (ours)
the FPreg adjusts for vacuum, in the plenum and is not able to do fast regulation. the damper corrects this. and the FPReg works perfectly at all throttle angles
and at all altitudes.
http://www.fixkick.com
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RE: Fuel rail firewall side leaking gas? - by fixkick - 11-24-2014, 01:10 AM

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