pd replacement on s4
09-08-09, 05:46 AM
#1
spinnin doritos
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pd replacement on s4
found a leak in my pd the other day, what other gaskets do i need to get? i think i read somewhere i should get the uim gaskets or something like that, help is appreciated thanks guys
ps im not gonna be upgrading to the s5 fuel rail any time soon unless someone wants to sell me one for cheap mode
ps im not gonna be upgrading to the s5 fuel rail any time soon unless someone wants to sell me one for cheap mode
09-09-09, 11:36 AM
#2
As much as everyone has been holding back on saying this, I will. Search.
However...
Don't bother replacing the Pulsation Dampener. It's expensive and, well, you can live without it. Replace it with a banjo bolt. You can either search and find the correct banjo bolt you'll need, or pull one off the rear of the S4 primary (maybe secondary, I can't remember) fuel rail. Just be sure you use brand new crush washers. Those are cheap from the dealer.. In doing this, you're eliminating the PD and it'll never, ever leak again. I've done this on several cars with no issue at all.
Do the searching and you'll find everything you need.
Yes, go ahead and get a new plenum gasket. RTV alone is a bit of a toss up, and if you do it wrong, it'll leak. At the very least, find a ride to the closest parts store and buy a roll of gasket material and simply make your own.
To do this, simply plug your lower intake manifold with rags or paper towels, CAREFULLY scrape off all remains of the old gasket... lay a piece of the gasket material down on the mating surface and hold it in place while you whack the gasket with a rubber mallet to make the 'imprint' of what you'll be cutting out. Once that's done, cut out the gasket from the sheet and be on your way. If you're really paranoid you can always use a small bead of RTV in addition to the gasket, but you shouldn't have to.
While you're doing all of this, go ahead and replace coolant hoses and fuel line since you'll have access to them. Use Aaroncake's grounding write-up on his site and replace your ground on the top of the motor. If done properly you'll have a lot less headache down the line and you won't have to tear down the top of the motor to get to something you should have replaced while you were in there.
Have fun!
However...
Don't bother replacing the Pulsation Dampener. It's expensive and, well, you can live without it. Replace it with a banjo bolt. You can either search and find the correct banjo bolt you'll need, or pull one off the rear of the S4 primary (maybe secondary, I can't remember) fuel rail. Just be sure you use brand new crush washers. Those are cheap from the dealer.. In doing this, you're eliminating the PD and it'll never, ever leak again. I've done this on several cars with no issue at all.
Do the searching and you'll find everything you need.
Yes, go ahead and get a new plenum gasket. RTV alone is a bit of a toss up, and if you do it wrong, it'll leak. At the very least, find a ride to the closest parts store and buy a roll of gasket material and simply make your own.
To do this, simply plug your lower intake manifold with rags or paper towels, CAREFULLY scrape off all remains of the old gasket... lay a piece of the gasket material down on the mating surface and hold it in place while you whack the gasket with a rubber mallet to make the 'imprint' of what you'll be cutting out. Once that's done, cut out the gasket from the sheet and be on your way. If you're really paranoid you can always use a small bead of RTV in addition to the gasket, but you shouldn't have to.
While you're doing all of this, go ahead and replace coolant hoses and fuel line since you'll have access to them. Use Aaroncake's grounding write-up on his site and replace your ground on the top of the motor. If done properly you'll have a lot less headache down the line and you won't have to tear down the top of the motor to get to something you should have replaced while you were in there.
Have fun!
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