pulsation damper fire, what is it?
 

And more importantly is a S5 susceptable and how do I check and prevent this from happening?:eek:

Thanks, Al

All FCs are susceptable. The PD is at the end of your primary fuel rail. Quickest way to figure if yours is leaking is to run the fuel pump, and "smell check" for fuel in the engine bay.

Jarrett

if the car has more than 100K miles or 10 years it should be replaced anyway

I always thought S5's didnt have to worry about it and it wsa only an S4 problem...

Ah well...I could be wrong.

No, the S5 is just as susceptible at the S4. They just are not as old.

If you look at the S5 PD, it is almost exactly the same internal design as the S4, with a rubber stopper instead of a screw. So if the rubber breaks, it is just like the S4 PD loosing its screw.

Also because the S5 rail has the hole in it (for the rubber stopper) it can leak if the diaphragm is ripped or the rubber stopper breaks off. So it is not sealed to prevent gas leaks from getting onto the engine either.

Just as flammable either series.

its most likely what killed my s5 on friday, so i beg everyone to make sure they check this out, i was lucky enough to get to a garden hose and put it all out before things got real nasty, but now im in the hole 6,000 bucks for what is going to be a basic compleat rebuild of everything under the hood. btw i could get another used car for half of what im going to pay but i cant find any decent fc's anywhere near houston so im stuck with what i have.

AH..

Very good to know.

You put out a gas fire with a WATER HOSE!?! I understand using whatever is at hand, but you dodged a bullet on that one.
Thank God you must have remembered to turn the key off, or you would have been pumping fuel until the wiring burned up, then...

This is a serious problem, even during the cold weather. Some people think the gas won't get hot enough to flash in winter. The heat of the motor CAN do it, even after you shut it down and walk away. I know- I lost a little SR-5 that way once.

Hey Mark,
 

Oh man, this is the short fuel rail under the UIM right?

If I had known this I would have replaced it when the engine was out for the rebuild! :eek:

My 1991 only has 45,000 miles should I be worried? :confused:

Yes, replace it with a Banjo bolt or convert to all AN fittings.

BOGUS ANSWER!

As covered above, you can not replace the S5 PD with a banjo bolt. The fuel rail (under the middle intake manifold) and PD are all one welded together part.

The only way you can use a Banjo bolt (which I wouldn't recommend anyway) on a S5 is to use a S4 fuel rail.

You can cut and weld the s5 fuel rail, or convert to a S4 rail. I was pretty tired when I posted so take it easy Buddy, lol.. So would his majesty recommend doing the parallel fuel mod, thus eliminating the PD? :D