73 107 suggestions from the experts needed.

[deportes]

After watching a youtube video where a guy restored a 107. Spent tons of money and 3000 hours, I have decide to not sell it and work on my 73 107, love the car. Last time it run was 4 years ago when I moved it and parked it in the garage. What should I do to before I try and start the car again? It run great when I moved it last. I will remove old gas, change oil, should I remove sparks and squirt some oil in cylinders, turn motor over with out starting it what do you guys recommend? Thanks.

[fonzi]

Most people would probably just turn the key and see what happens.

You can start taking the car apart, but you might not need to.

How old was the gas when you parked it?

Putting injector cleaner in the tank surely would not hurt.

One simple thing that may be worth doing:

You could disconnect the fuel lines from the injector ring and put them into a bottle. If they are too brittle to do this, they need to be replaced anyway. Put some longer fuel hose on temporarily to add flexibility in the location where you put the bottle. Turn the key to the on (not start) position, and the fuel pump should run for a second. Repeat as needed to see the condition of the fuel in the tank and to determine if your fuel pump is working.

You could possibly jump the fuel pump relay to make the pump run constantly and drain the tank if the fuel looks bad.

If you want to drain the tank, or if the fuel pump is no longer working, then you can drain the tank by removing the hose at the back under the tank by the fuel pump. This is more of a mess though. Once you start, it’s harder to stop, and you better have enough containers ready to go to handle everything that’s in the tank.

If you need to clean out the tank:

I’ve discovered that varnish remains as chunks when it is wet with fuel, but if you can completely dry it out, the chunks crumble to dust that is much easier to remove. With a removed tank, you can toss some rocks or nuts in there and shake the tank around to make sure they bang on all the locations to free up any hardened varnish, again, which is much easier to remove when dry.

If the fuel hose in the fuel ring is due for replacement, then this is the time to do it. If not, maybe you could run some concentrated injector cleaner mix through the injectors and run the car on an auxiliary fuel pump and tank. Bringing cars back from the dead all the time, not wanting to do the items above, I do this all the time. It’s easier having a rig with a pressure gauge ready to go. Here’s the last one I got running on a fuel pump rig.

https://youtu.be/hjR7I-fuMT0

That car hadn’t run in probably 20+ years.

[ejboyd5]

Turn the key and start the car. You'll probably have to charge the battery first.

[BWhitmore]

Drain the fuel tank and replace the fuel filters. Add new fuel. Change the oil and filter. Remove the spark plugs and squirt some Marvel Mystery Oil in the cylinders. Charge or replace the battery. Do all of this before attempting to start the engine. Once started and driven if you plan to drive the car infrequently add some Stabil to the fuel in the tank. You may also want to change the coolant, trans fluid and brake fluid. Quite often when a car has been sitting for a while the brake hoses fail internally which requires replacement of the brake hoses.

[cl600]

The damn fuel pumps go bad on these all the time. I would change that out first and new filter to begin with. Every old 107 I purchased that had been sitting needed new fuel pumps and sometimes the whole damn system in the rear replaced such as lines, etc.

I agree with the tank and lines pulling that out and seeing what you are dealing with!

I really like seafoam spray into the intake, but you need the car running to get that carbon and injectors cleaned out. Most cars I run that looks like a fire with the amount of white smoke these old cars have from carbon build up!

Dont forget to check for spark!

I have got all these old cars running by getting spark first and at least pouring gas into intake. These german derpanzerwagons can take a beating!

[fonzi]

I’ve found that rather than disassembling the d-jet pumps, let acetone sit for a bit while applying power and reversing polarity. It seems to work well IMO. Yes, the pumps do gum up, but they can be un-gummed.

[deportes]

Thank you all for the information.