Rookie84

Well, I can smell gas inside the cabin, and when I open the vents so that the air is coming inside the car from outside through A/C vents, I can really smell gas. Should I replace the PD? How can I tell if the PD needs replacing? Also, is there any side effects of replacing the PD with banjo bolt? Thanks in advance.

pip

The best way to check if the pd is leaking is to just take the uim off and look/smell for any fuel, and you will be able to tell if it needs replacing if its leaking

Rookie84

sorry but I'm a noob... what is uim and where is it located?

SupraDoom7

Damn S5 lights are secsi.

pip

Heh its ok rookie, uim stands for Upper Intake Manifold, and if youre not sure what or where it is its tough to tell you where to go from there unless you have some good friends who know what they are doing and are willing to help you, or you are willing to just start taking it apart. Thats the way I learned, just get an fsm and study it every day and every night and then when it comes time just work carefully and try not to get TO mad

Edit: Forgot to mention the where, the uim is located between the throttle body and the lower intake manifold, which is all underneath your friend and mine the stock ic unless you have a front mount.

duehuynh

remove the top intercooler..this requires a couple of hoses and nuts...take your time and if need to, label everything so you can put it back.

once that's done, you should be able to shine a bright light under the fuel rails. If you see liquid, then don't start your engine.

Funny....S5 shouldn't see that much problem since it does not have pulsation dampers design like the S4 (no stupid screw)....oh well...

Be careful.

dewey

ajsuper7

the s5 pd is bad as well. not as bad as s4's but bad enough.

Icemark

Actually I have seen more S5 PDs leaking than S4 ones.

Its that rubber stopper that breaks off internally from the end of the PD... then just like the screw falling out of the S4 ones; the S5 PD looses control and the membrain rips.

Rookie84

Thanks, guys I think I'm just gonna put in a banjo bolt and forget about it unless anyone says otherwise...

igottafc

iTrader: (6)

i wouldnt go for the banjo bolt idea, although ive heard mixed opinions on this forum, banjo bolts dont suppress the fuel pulses in the rail which can cause a fough flow of fuel to the injectors which can cause a lean condition. Then again, some people say they havent had any side effects. IMO i would just do it right and get a new PD. Question: can you put a banjo bolt into an s5 rail?? i thought the PD's were internal as opposed to the bolt on PD's found on S4 rails? -alex

mwpayne

I got a potentially 'dumb' suggestion..why not pack the end of that PD with JB weld or something? Mines not leaking (yet), but the screw is gone. I think I'll try it, got nothing to lose, I guess.

Icemark

Banjo bolt won't work in a S5 fuel rail. The PD and fuel rail are welded together.

Just replace the PD. It is pretty in-expensive all and all, and you only need to replace it every 10 years or 100K miles (which ever comes first).

Rookie84

Damn it! I would still be worried about leakage though... time to buy a fire extinguisher.

pip

You have no reason to worry about leaking out of a new pd, as mark said it needs to be replaced every 10 years or 100,000 miles, anytime before then and you are ok.

Rookie84

cool cool... I guess I'll just make sure new one is in before the trip to Indy

Do engine rebuilders replace PDs when rebuilding?? If that's the case, then I won't have to worry about it at all...

theone81

im having a problem starting my car could it be cause of the PD's leaking, cause every time i start the car, i smell some really heavy gass when i come close to the engine bay?.

Wizz

Thread jack.

Anbody know the part # for an S4 PD, so I can go to my local Mazda dealer and order one? Thanks.

therotaryrocket

i'm working on someones 87 rx7 n/a and it previously had an engine fire but the fire looks like it was extinguished before major damage was done. The car has 173,000 miles on it and looks like its lacked some maintanence before, you think the PD (pressure dampner, right?) leaked and caused the fire? The car acts like my turbo II when it was flooded, wants to start so much but all day long and it won't except with the turbo 2 a push start fired it up, and on this 87 n/a push start didn't work. The fuel injectors seemed like they were leaking fuel, how many fuel injectors are on the n/a? I took off the fuel feed line from the end of the rail and fuel is present. Spark is ok, plugs were cleaned. Could the PD cause the engine to not start, and the engine fire? sorry for threadjacking, I need a little help here. I already did the egi fuse, crank, egi fuse thingy. thanks all.

uRizen

iTrader: (2)

On a related note, are there any companies that make PDs that will fit our fuel rails? It's not like they're a RX-7 specific thing (ours just seem to fail more often then anyone elses).

therotaryrocket

and can this cause a car to not start, catch on fire, and flood the engine? <bump>

ddub

Yes there are others that will fit, people have done it I believe there is a how-to in the archive. Ours don't fail anymore than other cars, what do you expect from a 15 year old car with parts manufactured in the 80's? The safest vehicles built in the late 80's and early 90's are barely as safe, if not way less safe, than the most UNsafe vehicles made today.

therotaryrocket

bump, i want to know could it cause you to run rich, or flood the engine?