Even the guy at Kragen O'Reily's couldn't find it. I wanted to try the Sea Foam to clean it out.

 

Is it the one right above the EGR valve?

 

I'm fairly certain there isn't one since the system is electronic

 

It should be this one. But be very careful!!! It is under high pressure!

 

The accumulator ball that Newbee has pictured is part of the hydraulic brake system but would not give access for putting in the seafoam. And like Newbee said that ball is under pressure and best left to the expert familiar with the braking system on the Jag. The seafoam would have to go into a vacuum line somewhere on the intake.

 

What is the fascination with this seafoam stuff? I've worked on cars professionally for 25+ years and have never had need for this stuff but i always read of people needing to use it.

 

Just like so many other products some people think it's great stuff. I've never had a vehicle that needed to be decarboned- assuming the product works as it states- but i do use this product as a gas stablizer over the winter months.

 

It's a floor polish! No it's a dessert topping! I think Seafoam can be found in the same section as the plastic magnets and the glass stretchers.

 

As a kid I used to love the smell of Redex. It didn't do much for the engine, but the smoke screen smelled nice.

Do not mess with the brake accumulator sphere, unless you are changing it.

 

I found the place to use to hook a small hose up to to suck in the Sea Foam. The easiest way to describe it would be to just take a pic of it and post it on here. It ISN'T the brake accumulator.

 

Good, I think, but are you really sure you want to do it?

It may well be that with one of these old engines, any deposits are the only thing holding it together.

You could easily find that afterwards you have no compression, cracked piston rings will now be broken piston rings, worn valves will now be leaky valves, big end bearings may now want to knock, and tappets could sing every time you run the car.

Think carefully, and factor in an engine rebuild risk.!

As per Jeh, don't do it, and don't walk in there with your eyes wide shut.

 

I did it a couple of weeks ago. It still runs fine. It runs smoother too.