1973.5 911T not starting

[RobGould88]

In my latest adventure with Aubergine 1973.5 911, the car is not starting after the new batteries were installed. Al the electronics are working, I hear the CIS system and I have tried to include short video of what the car is doing. Of course as a newbie my thoughts are of an engine rebuild or worse. (I am okay with a rebuild if needed, just shifts the budget money and time wise) I tried to add the video of the start but it is not letting me upload. So let me to the best to describe, tries to start either turns over and then fails to keep running or tries to turn over so any ideas would be helpful. I have a service appointment soon but once again trying to educate myself. I think there is enough gas in the tank, the fuel gauge does not work so it is a guess, and the last time I had the car running the oil level was adequate. Before this happened the oil gauge showed temperature in range and a a pressure of 60. Now the oil gauge does not move from the top of the temperature range and reads a pressure less than 20. Anything I should be looking for to help? But is that accurate with the engine not running.Attachment 625882m Just to clarify that is the oil gauge when not running, when I start the car, the pressure goes to about 20 and the temp goes to the top

[edmayo]

Don't guess on fuel level, just remove the fuel level sender and look in the tank, then you'll know.

[RobGould88]

I will try that after work

[RobGould88]

As soon as I loosened the fuel sender gas started to seep out. So there is gas in the tank. I let the overflow seep out, cleaned it up and tightened the screws. I was told before the car was shipped, that the fuel tank was drained. I probably have only put 3 gallons in since I got the car with portable can. I am wondering if the engine is flooded and that is why it starts and dies out. I am learning with shipping classics (supposedly a reputable company) the same rules rules apply I teach my housestaff after being in medicine for 25 years, believe none of what you hear and only half of what you see1

[Scott A]

With some deep container, like a clear orange juice bottle, I would disconnect fuel line at rear of engine, after the fuel filter, and turn the key….and see if it comes into the bottle.

If that didn’t work, go before the filter.

And if it’s a car new to you, it’s a good idea to check all the fuel lines, from front to back.

[HarryD]

Need to determine if you have a fuel or spark issue.

If it was me, I would spray some starting fluid in the air box and see if it runs on the ether. If so, your spark is ok and you have a fueling issue.

As noted. If it is fuel, the checks suggested before and after the fuel filter are good.

Also, our early cars will run and last better with non ethanol fuel. The ethanol is not compatible either the seals, rubber and gaskets in your car and can corrode the steel fuel lines.

Let us know what you find.

[RobGould88]

Thanks everyone.
First step is getting a fire extinguisher just in case and then working on this project this weekend.
One last question the previous owner disconnected the charcoal box, that hose is free floating in the frunk. I have not reconnected the charcoal box yet because I need to look more into mounting and ventilation. Would not having the charcoal box working be a possible issue?

[Scott A]

No, the charcoal isn’t the problem.

It sounds like a car that sat.

Sitting cars can have many fuel issues. From from to back.
Bad gas, corroded clogged filter under the tank, gunked up fuel lines, poorly working fuel pump, clogged fuel filter, and then into the cis system.

The best thing is clean & replace from front to back. (50 yrs)

If you have good flow after the filter, then some of those things are generally Ok.

[HarryD]

When you are ready you tackle the evaporative emissions system, this post at Pelican Parts may be helpful.

Philippe,

Here is the evaporative emissions system (fuel tank vent) for 1969 to 1973.
FuelEvapEmmissions69on03.jpg
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© Dr. Ing. h.c. F. Porsche A.G.

1. Expansion Chamber
2. Vent Chamber
3. Activated charcoal container
4. Engine fan upper shrouding
5. Pressure line from fan to activated charcoal container
6. Purging line from activated charcoal container to engine air cleaner.


02a
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© Dr. Ing. h.c. F. Porsche A.G.

04
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"
© Dr. Ing. h.c. F. Porsche A.G.

05
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"
© Dr. Ing. h.c. F. Porsche A.G.

06
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"
© Dr. Ing. h.c. F. Porsche A.G.

Best,
Grady

[RobGould88]

Thanks for the post. The car did run when I first got it about three months ago. After the battery switch, these new issues happened. Is it possible to have push something down into the fuel system.