Mason fuel line instal

[Tobydog61]

I’m thinking of topping off my winter projects on the ‘88 911 Cab with replacing engine compartment fuel lines. The Mason lines look like a good way to go with the engine in the car. For those that have done this without removing the intake, did you cut the stock metal lines under fuel intake to remove it? Everybody talks about how this project is not too tough but very few details on the process.

Thx

[SpyderMike]

I used the Mason lines and replaced them with engine in. I did cut some lines to make them easier to remove.

I thought I had covered this in a thread, but I can't locate it.

[dkirk]

I installed the Mason lines in my '88 several years ago. Did it without removal of the intake manifold. You have to cut the metal Y-tube that resides under the intake manifold in order to remove it. I suggest having a Moto-Tool with a cut-off wheel to do this. Also have a large inspection mirror for working up against the firewall - very tight quarters.

[Tobydog61]

What did you remove to make room? Heater tube and motor, cruise control cables/bracket, air intake housing? Anything else?

[SpyderMike]

I had already removed the heater tube and bracket and the cruise control system as part of my backdate.

[ErrorMargin]

Originally Posted by Tobydog61

What did you remove to make room? Heater tube and motor, cruise control cables/bracket, air intake housing? Anything else?

I think that should be enough to get the job done.

Here are a few suggestions while you are in there....

1. Send out the fuel injectors for cleaning, new filters, grommets, etc.
2. Retorque all the intake manifold nuts and tighten up the hose clamps on the bellows that connects the two intake manifold halves.
3. Inspect or maybe just replace all the vacuum lines.
4. Send all the nuts, bolts, brackets, fuel rails, etc., out to be cleaned and replated in the correct yellow gold zinc
5. Replace the throttle body to intake manifold o ring.
6. Check that the fuel pressure regulator and fuel pressure damper can hold a vacuum
7. Before you take everything apart, check your fuel pressure and fix as necessary.

Once you get everything back together, I would jumper the top of fuses 5 and 6 in the frunk together to run the fuel pump without running the engine. Let it run for awhile and look for leaks. This will also push anything that might be in your fuel lines or rails back into your tank and ultimately the fuel filter so that it does not go through your injectors. A new fuel filter would also be a good idea.

[Tobydog61]

Thanks, good list to focus on.

[Tobydog61]

I don’t mind admitting that I’m part way through this project and it’s a *****. Worst project I’ve taken on with my car and I’ve done many.

[ErrorMargin]

Originally Posted by Tobydog61

I don’t mind admitting that I’m part way through this project and it’s a *****. Worst project I’ve taken on with my car and I’ve done many.

I hear that, I replaced the fuel lines with the engine out of the car last year… I have a good idea how hard this is with the engine in the car.

[Mr. Merk]

I pulled the intake. It's not that much work and gives access to lots of stuff including the triangle of death. Lots of fun things to do while you're there.