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Join Date: Nov 2018
Location: Sweden
Posts: 17
fuel tank

Hi everyone,

i'm in the process of renovating my Porsche 924 - 1985
as i tried to start it yesterday i filled it with gas and a new battery
When starting i could accelerate but the motor dies after accelerating....fuel tank is leaking and i wonder if it's the fuel pump that is dead : fuel leaks heavily and wonder why motor stays not on....
Any suggestions ?
Old 11-21-2018, 12:29 PM
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In the Fires of Hell.....
 
kdjones2000's Avatar
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 3,000
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It could be the fuel pump, or the fuel pressure reservoirs. They are both back near the tank.

I recommend that you drop the tank and replace all of the lines that are on top of the tank as well.

Good luck on your new project.
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NASA/PCA Instructor
'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
Old 11-21-2018, 05:42 PM
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Patrick
 
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Join Date: May 2012
Location: Plymouth MA
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Check the fuel system, starting from the tank fuel strainer and follow the line to the pump, then filter. Look for signs of leakage and repair accordingly. Here are a couple pics of my 84 which should be very close in design. Good luck!

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1984 944 NA, constant tinkering
Old 11-21-2018, 06:01 PM
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In the Fires of Hell.....
 
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His is a pre-944 car, so the fuel filter isn't located there.

There also should be a second fuel pump in the location where the fuel strainer is.
__________________
NASA/PCA Instructor
'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
Old 11-22-2018, 05:28 AM
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Patrick
 
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Sorry, I'm not sure how the 85' 924's layout is but assumed that they redesigned by that year. My bad...
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1984 944 NA, constant tinkering
Old 11-22-2018, 08:02 AM
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Since he is located in Sweden, most likely that's a 924S which is similar to the 1985 and earlier 944s.

Either way, good advice has been given, he just needs to start troubleshooting.


To Farfalla: Go to Clark's Garage to get some understanding of these cars:

https://clarks-garage.com/

Click on "Garage Shop Manual" in upper left.
Old 11-22-2018, 08:02 AM
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Hi

I went to Clark's Garage and clicked on Garage Shop Manual in the upper left. A very detailed table of contents appeared, but my question is this. How does on find the information behind the list of items? They don't seem to have active links. Is there a way to access the manual or parts of the manual itself?

Thanks
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'78 924 (Carburated; sold when moving to CA)
Old 11-22-2018, 09:35 AM
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In the Fires of Hell.....
 
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Try right clicking and "Open link in new Tab".

The last year of the "First generation" 924 cars was 1985 in ROW.
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NASA/PCA Instructor
'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
Old 11-22-2018, 09:47 AM
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Thanks, your suggestion worked perfectly.
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'87 951
'01 986S (Sold)
'78 924 (Carburated; sold when moving to CA)
Old 11-22-2018, 10:56 AM
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Join Date: Nov 2018
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fuel tank

Thank you all guys - your suggestons sound perfect - will look into the fuel line early next week and keep you posted. Just took a pic today of fuel pump back wheel passenger side
Old 11-23-2018, 06:52 AM
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In the Fires of Hell.....
 
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Looks like it's wet up near your fuel pump - could be leaking around there.

Here is a thread about the in-tank pump and possible replacement options. If that pump isn't working, you can have hard starts/running due to low fuel pressure.

924Board.org :: View topic - Porsche 924 - In tank Fuel Pump

You should also have 2 of these things up just in front of the fuel tank way up high under the car:

https://shop.advanceautoparts.com/find/porsche-924-fuel-pressure-accumulator

They often leak as well, and will cause hard starts if leaking.
__________________
NASA/PCA Instructor
'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
Old 11-23-2018, 04:52 PM
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Join Date: Nov 2018
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Posts: 17
fuel tank

removed passenger back wheel and oops some electric wire from the fuel pump appears to be loose....TG i did not set fire to the whole garage....
Old 11-27-2018, 01:16 PM
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