Hello everyone,

I've just joined the club of RX7 Owners and I'd like to start fresh by replacing every vaccum lines of my car.
I'm looking to buy a full set of Dale's Check Valve but I can't seem to find the correct way to order them...
Can someone points me in the good direction?

Best regards

 

Send him a private message.
Do you have a sequential boost issue?

 

I can't send him a private message because apparently I'm missing the required permissions.
Not really I'm just going to change all the vaccum hoses and while I'm at it I'd like to change the check valve since they are still stock.

 

He may see this thread and can contact you. There’s likely a minimum post count to send PM’s.

Know that even with the reference diagrams a vacuum hose job on a stock FD is NOT a walk in the park and not a task to be taken lightly. The stock rubber hoses will be hard, stiff and stuck on each component. You WILL break solenoids. And routing is complicated and difficult at times to follow.
On the other hand, if left undisturbed, they rarely cause issues by themselves. Opinions vary, but IMHO if you’re not already having a problem, consider leaving them alone.

 

Don't worry I know what I'm getting myself into regarding the difficulty of the job.
Regarding the whether or not actually doing it, is mainly because of the age of the hosing which are OEM and now seems to be totally dead after 28 years in there.
​​​I think it's just time to finally give the silicon upgrade to them.

 

If you insist. And while you’re in that deep you can go crazy and consider these too...
* New Fuel pulsation dampener (FPD) or delete
* pull injectors for cleaning, ‘O’ rings and caps.
* new injector connectors and pig tails (they’re usually brittle and due)
* new soft fuel lines
* new OMP lines and clean injectors

 

Almost everything you just said is on my list of stuff I have to do to put it back on road.
The car hasn't run for a while so one of the soft fuel line leaks but everything else works mostly perfectly.
Just need to put everything on a baseline before enjoying it properly.

 

I don't think the job is really that bad as long as you take your time. Take lots of pictures and label the lines/nipples as you take everything apart so you can just follow the breadcrumbs when putting the new lines in.

You'll reduce the chance of breaking the solenoids if you just cut the lines off of them instead of yanking. I went ahead and replaced all the solenoids in my rats nest with new, but I think I was able to get them all out without breaking one and my vacuum lines were hard as a rock.

Definitely check everything else out down there while you have the rats nest out. Fuel lines, FPD, OMP lines, Oil Injectors, etc. I would also make sure you have the post-recall fuel crossover hose and install one if you don't. There's also a coolant line or two that will be much more accessible with the rats nest out.

Check all the electrical connectors carefully. It isn't just the fuel injector ones that get brittle and break, and some of them will be a lot easier to replace while you have everything out.

 

My father suggested me the same thing regarding cutting the hose in order to not break the solenoids.
Before starting anything I'll start to make a full list of the stuff to do, stuff to order, and what to fix.

Thanks for the inputs on the process 😊

 

Sending you a PM on them, Thanks!

Dale