RxFred

So my pulsation damper is leaking. I'm one of the lucky that found the problem without caughting fire...

I've done my research and found 2 solutions. Replacing with an OEM part (Mazda still carries it for 141$ Can) or putting a banjo bolt from Earl's part number 997591 (5$)
From what I understand, it helps creating pulsation momentum so the gas and injectors are on the same tone... It seems like a part that is not quite necessary but at the same time, if Mazda engineers placed it there, there is probably a good reason.

Oh dear rx7 gurus!.. what is your advice?

85 FB

I thought the whole deal of a pulsation damper was to dampen the pulses of the fuel?

And, I've always wondered why you can replace it with a simple banjo bolt. I'm confused about this one as well.

TeamSMS

Id replace it with a banjo bolt...i also caught mine before it caught fire...my PD was also leaking. Im waiting on some injectors grommets and other small things but yeah...im putting a banjo bolt in the place of my PD. I have heard some say bad things about replacing the PD with a banjo bolt...but have also talked to a lot of people that have done it and have had no problems at all since they did it. I looked around on here a lot and didnt find anybody having an actual fuel problem after replacing the PD with a banjo bolt.

themayor500

In my opinion i would definitely go with the banjo bolt, before i did my swap I had replaced my PD twice and the second one went bad in about 10k miles, since i put the banjo bolt in i have not had the least bit of a problem with anything fuel related.

ratboy

iTrader: (1)

I recently replaced my FPD with the banjo bolt mod and havent had any problems. I heard a few naysayers when I asked but noone that had any actual experience proving this to be a bad mod. Hardest part is making sure you get the right part (I picked up a used 86 non turbo fuel rail).

rotary resurection made a nice write up on this mod:
http://www.rotaryresurrection.com/ro...pulsation.html