Type 4 Unleashed

iTrader: (1)

Hi Everyone
I have an 86 RX7, I am pulling the manifold to replace the Pressure Damper due to leaking, first I want to ask about the pressure side Banjo bolt that I removed, I found a copper washer on the bolt to banjo side, but didn't find a washer between the banjo and the rail, is there suppose to be a washer there or not ? And what about the return side ?

And is there a fuel hose kit available and an injector seal kit and if so where would I go ?

I am even thinking about sending the injectors out to be rebuilt. And any other suggestions as to what I should do with the manifold off.

Any help would be appreciated.

clokker

iTrader: (2)

Injectors are serviced, not rebuilt.
It's worth doing and they'll come back with all new seals as part of the service.

Fuel hose is standard 5/16" high pressure hose, available all over.

Yes, your banjo should have a copper washer on both sides.

Edit:
As long as the manifolds are off, you may as well redo the vacuum hoses and freshen up the engine grounds.

ACR_RX-7

iTrader: (1)

This ^

Cleaning all of the grounds will help prevent the infamous 3800RPM hesitation

Type 4 Unleashed

iTrader: (1)

Rebuilt, Serviced, Remanufactured, were terms used when I did a search on fuel injectors on the internet.

I had did a search on the site and found there had been a recall on the later fuel injection and a member had made up hose kits, and thought that some might have been made up for the earlier models and that those had special hoses with angled bends or not, was the reason I was asking about kits and was willing to spend money with members offering such options.

I got the manifold off and the damper doesn't look like it was leaking, so it may have been the banjo ? I already have a new damper that I bought some time ago, so I'll replace it to be safe. And I've read now people have been removing the dampers with a kit that allows you to delete the damper. I'll replace the fuel lines, but the vacuum lines are still in good shape surprisingly.

JCurry

iTrader: (6)

If your missing that copper washer, that is probably where your leak is coming from. Someone has pulled all that apart before and forgot it. Probably did the vacuum lines when the manifold was off it they aren't in bad shape.

Make sure you clean your grounds and check everything over really when while you have it apart like mentioned above.

PinkRacer

I just deleted the dampener altogether - it's a pretty simple DIY instead of replacing it.

Type 4 Unleashed

iTrader: (1)

I had bought my damper some time ago, actually in 2013 when I parked the car because of the what I thought was the damper leaking ? And I'll never find the receipt and even if I did it's probably well past the time they would allow a return anyways. So the new one should be good for a while. Thanks for the tips for cleaning the grounds.

Type 4 Unleashed

iTrader: (1)

Update:
I rechecked the vacuum lines under the manifold, and went ahead and replaced them anyways.

Resealed the injectors, put everything back together including having to replace a injector connector that broke when I removed it, but screwed up there by not replacing the other one under the manifold, but the one I did replace I took the short cut, instead of splicing the wires of the new connector into the loom, I just pushed down the tabs and removed the new wires from the new connector, took some pliers and broke the old connector the rest of the way then slid the old wires into the new connector and popped it on the injector, and she fired right up.

Warmed her up then went for a ride, and she ran like a dog under load, out of gear she idled fine and revved fine as far as I could tell. It sat for 3 years, I did run it on occasion but for the longest it had very little fuel in it, then the fuel level sender would either show full or empty, so I know I screwed up there buy not adding a fuel stabilizer while stored, so I replaced the level sender and the fuel pump (1986 pump in tank) and she ran beautifully.

Yesterday I took her to get smoged and she passed all the emissions, but failed the fuel evap test, so I've got a leak back there I've got to find.

The smog station said the shop next store can run a smoke test, so I stopped in to get a quote but they wanted $70 to plug in their smoke machine to find the leak, and then would apply the $70 to the repair.

I am going to slowly pressure the tank with air and see if I can find the leak, which is what they basically do when they test the fuel evap system anyways.

ACR_RX-7

iTrader: (1)

NONONONONONO


That's a great way to start a fire.

I'm a emissions tech in my state and there are misconceptions about EVAP testing.

A smoke machine uses CO2, which is inert, and a special fogging smoke that is safe for evap systems, plus it usually has dye in it. The machine only puts out about 1 psi. Shop air WILL rupture something. I have seen it first hand. Also, inside a fuel tank and lines, there is nothing but liquid fuel, or fuel vapor. You start adding air to it, now you have created a combustible mixture. Lets say your fuel pump clicks on and the pump is slightly exposed. What if the electrical brushes in the motor create a spark? WHAT IF YOU BLOW UP YOUR TANK AND YOUR GARAGE!!!

$70 is a freaking steal of a price. Pay them to do it and find the leak. It's likely your filler neck, or the fuel pump seal that is leaking anyways. Is your gas cap old? Replace it with a factory one to be sure. DO NOT PRESSURIZE YOUR TANK WITH AIR!!!


Look at your signature. Stupid is as stupid does. Be safe and get it tested professionally. Where I work, we charge at minimum $100 for a smoke test. These things take quite a bit of time, so please. Get it done correctly, or just go scorched earth and replace all of the vapor lines in the rear of the car.

Type 4 Unleashed

iTrader: (1)

I am aware of the hazards. The Smog test Tech said there were a substantial amount of fumes coming from underneath the rear of the car when they did the test, and the only thing I could think of was that I had replaced the pump & level sender, so maybe I didn't seal it well ? So I did a visual inspection and it looked good no leaks on the unit or either fuel lines or the evap line.

After further inspection, I found the culprit, some one had cut the over fill hose to the tank filler tube, to steal gas.