no power help!

[SteveJ]

Keep in mind that a fusible link is designed to burn up the wire but leave the insulation intact. That is to prevent another short to ground.

[jwhite927458]

Here is an update on my electrical issue.

I managed to get most of the electronics to work, wipers, gauges, interior lights etc. I tested the fusable links and im getting 12v at both ends on all of them and the ohms were normal. This is where it gets weird....prior to doing this, my taillights did not work, but my headlights did. Now, my tailights stay on, and my head lights wont turn on. I tested the fuel pump and I am getting no power to it, no power with key in the on position and no power when cranking. The relays seem like they are in very poor condition, so my next step was replacing them.

[Captain Obvious]

There's some 78 fuel pump info in this thread:

http://www.classiczcars.com/forums/fuel-injection-s30/50487-runs-nice-few-min-then-rough-then-kills.html

Starts about halfway down or so?

[EuroDat]

One way to check relay contact condition is to use a volt meter across them while they are still in the circuit. You should read battery voltage until the relay activates. If the circuit is complete ie: attached to a fuel pump (in this case), headlights or something to create a load on the circuit it should drop very close to zero volts. Anything higher than that is resistance across the contacts.

Im sure other members will have other methods, but I have always found this a handy trouble shooting method.

The fuel pump wont work with the ignition just on. It takes more than that. Are you getting a signal to activate the pump?

Im not sure how the 78 activates the pump. Oil pressure switch?

Something else to look at: If is has not been started for a while, you might consider doing some pre startup work on the engine. Lubricating the cam lobes for example. It would be a shame to damage it just trying to get it started. If you do a search in this forum "starting the beast" there are some good threads on the subject.

As to your problem with the headlights/taillights:ermm: gremlins?

Thats often the case when you get someone elses problem to fix. God knows what the PO did to it before he gave up and passed it onto you. Like you said, why would he buy it and just park it?

Chas

[jwhite927458]

Today I got the fuel pump to kick on. However the car will sound like it's just about to start and then nothing. Also the pump keeps running... Like its having problems pressurizing the tank. I checked spark and it's good. Maf possibly?

[Zed Head]

The fuel pump is not like the motor on an air compressor. It does not stop running when target pressure is reached, it runs all the time when the engine is running. The fuel pressure regulator (FPR) bleeds off excess pressure to maintain target pressure in the fuel rail (the fuel tank is not pressurized).

How long did the car sit before you bought it? Old fuel was mentioned in another thread, and that's something you should consider. Some fuel will last for years, other goes bad in less than a year. Give a short summary of the condition of the car when you bought it, a new clue might show up.