924Board.org

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

Okay well a while back I realized that no fuel was getting to the engine...So i finally decided to get on it...Well on page 79 in your haynes manuals is where I started....Under "7 Fuel supply - tests and fault finding". Well im going right threw them...and 5 says to make a jumper lead out of a 8 amp bottle fuse....

Does that look right??? Well i followed threw...and 750cc's of gas did not come out the Fuel return line....none did. So i went on to the next step...it says to remove something called a "HT lead" from the coil. That is where I stoped...because I have no idea what a "HT lead" is...so can somebody explain to me what it is???
_________________
=====>Alex<=====
1979 Porsche 924 NA 5spd
1979 Parts Porshce 924 NA 5spd

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Its the one that goes to the center of distributor cap.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

BTW, I think the key needs to be ON for the jumper to work.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Yep, sounds like fuel pump time.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Ozzie · Posted: Fri Aug 15, 2008 7:59 am Post subject:

Was the pump running- are you sure there is some in the tank?
Someone here recently went thru all the checks to discover (a long time later) the tank was empty.
The fuel gauge lies
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

Ozzie · Posted: Fri Aug 15, 2008 8:07 am Post subject:

I'd put more than that 2-3 gallons at least.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

!tom · Posted: Fri Aug 15, 2008 8:40 am Post subject:

Before replacing your pump, make sure you're getting voltage at its terminals with your jumper in place, to ensure your jumper is working as intended.
_________________
78 924 NA
5-lug

2Fast · Joined: 09 Dec 2007 Posts: 459 Location: Klamath Falls, OR

datatrain · Posted: Fri Aug 15, 2008 9:25 am Post subject: Spade lugs

From the look of your jumper I wonder if your actually making contact with the relay connections. I put spade lugs on mine and it slid right into the relay socket.

DAve
_________________
'78 924 NA with Collector plate
33 year old car, with me for 21 yrs
Mint '92 318i BMW
Near mint '98 Buick LeSabre
VE7HFR

Grenadiers · Posted: Fri Aug 15, 2008 10:02 am Post subject: fuelly pump

With the iginition 'on' and after waiting a few minutes, the fuel pump should be warm to the touch if it's not spinning. At least that is what happened when I checked out the one in my 'new' '77. I pulled the pump, and applied voltage to the terminals. The motor would 'kick' as I applied and reapplied voltage to it, but not turn. Was ready to toss it, but I whacked the aluminum 'head' back and forth trying to dislodge it to see what effed it up. On a lark, I put the voltage back on it, and gesus, the thing worked! Not recommending this as a way to fix these things, but I can now try to get the '77 started, and not have to buy a new pump. For now anyway, I'll get a new one when needed.
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

Buwani 931 · Joined: 31 May 2004 Posts: 308 Location: Napa California