Fuel pressure fluctuation

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Fuel pressure fluctuation

I have a bad fuel pressure fluctuation in fuel pressure gauge, prior to this I broke the nuts of the cylinder 5 and from there I have problems, the engine gives explosions when in the high regime 2800 rpm the engine is IO- 360H, I would like to receive any suggestions.
Aten.
Augusto Menendez
LIMA-PERU

Make sure the vent line is clear and open if it has one, also try some light oil in the end of the line at the fuel gauge. First make sure that it is indication and not actual though, install a gauge in parallel to see if both fluxuate. Also a lot of those systems have a orifice fitting installed, make sure that no one has removed the OEM fitting and if it hasn't got one then put one in to see if it helps the fluxuation.

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