If no communication with a obd2 scanner to the PCM, PCM is most likely dead.
Search the Gen1/2 forum as there is posts about how to check stuff posted by Dan (@Viper Specialty ) and myself.
What is the mileage? People ask around 20-30% less then a clean car.
If you got pictures of the damage that is a big big big factor.
I myself wouldn't pay 20% less but that's me.
Depends on the Anti-Drainback Valve pressure spec. The HASTINGS / BALDWIN LF142 is 8 PSID By-Pass Valve. I would have to look up others.
@GTS Dean tracks his car a lot and uses WIX (if I remember correctly). Others use Mobil 1 branded filters.
Unless the regulator fails and the pump can pump upto 90-100psi, nothing really to worry about. But check whatever injectors you have max pressure spec. Some bosch top out at 75psi
That's why I said not to waste time with a check valve or that stupid timer someone was selling and/or showing...
@maverickagm no effect. the check valve can be 30 inches or 30 feet from the regulator.
Adding an inline regulator is not a good idea unless it has a fuel return line port. The back pressure on the pump will kill the pump.
But it would be the particles getting stuck in the check valve that would make it not close and leak back if the spring still has the same load rating.
I would be interested in back flushing it and also disassembling one.
FUEL PRESSURE REGULATOR
A fuel pressure regulator is used on all gas powered engines. It is located on the top of the fuel pump module. A separate frame mounted fuel filter is used.
Fue l Pressur e Regulato r Operation : The pressure regulator is a mechanical device that is calibrated to...
I really doubt it is the coil as cylinder 7 fires the same time as 4 from the same driver and there are only 3 individual coils in one coil pack and 2 individual coils in the other pack.
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