run away injectors - 1984 928 Euro
#16
Rennlist Member
^^ what Ed said ^^^
And, when you have taken care of the leak, all the warning lights staying on can be as simple as a bad ignition switch , when you start the car, does the key spring back to the position just before the start position, or do you have to help it? When you turn the key to position 3 to turn on the starter, the wiring diagrams show that it breaks the contact with position 2. If the contact with position 2 is not broken, the car will still start properly, but the dash lights will remain on. If this is your problem, Oiling the key part of the switch will likely not solve the problem, the spring is in the electrical part on the back of the ignition switch assy.
And, when you have taken care of the leak, all the warning lights staying on can be as simple as a bad ignition switch , when you start the car, does the key spring back to the position just before the start position, or do you have to help it? When you turn the key to position 3 to turn on the starter, the wiring diagrams show that it breaks the contact with position 2. If the contact with position 2 is not broken, the car will still start properly, but the dash lights will remain on. If this is your problem, Oiling the key part of the switch will likely not solve the problem, the spring is in the electrical part on the back of the ignition switch assy.
Last edited by neilh; 04-11-2013 at 09:40 AM.
#17
I am not sure if it is a fuel leak?
There wasn't any signs of fuel being sprayed (from the pressure) and it was all contained in puddles on the top of the intake manifold and inside the Mass air and inside intake manifold. The volume was enormous considering the short amount of time I ran the pump and cranked the engine. So much that we are not talking about a leak..it was an extreme amount as thought a fuel line were disconnected.
I have since run fuel pump without the ignition on and actually run the engine and it is bone dry.
It sound exactly like what happened with Drew (above, red 928). It was a weird and random "extreme flooding" thing.
The important piece to the puzzle, that will allow you guys to solve the mystery is this: I completely by-passed pin 87 (on the fuel pump regulator) onward. Pin 87 splits into two wires, one goes to the fuse that operates the fuel pump and one goes to the LH ECU. When I by-passed 87 (instead of jumping 87 to 30) I prevented the LH from doing whatever it is supposed to do (because it did not get power) and it flooded. -- So whatever the LH was unable to do, due to no being energized caused an extreme flooding or run-away injector situation. -- Or at least this is my theory.
Any thoughts?
Thanks!
Ed
There wasn't any signs of fuel being sprayed (from the pressure) and it was all contained in puddles on the top of the intake manifold and inside the Mass air and inside intake manifold. The volume was enormous considering the short amount of time I ran the pump and cranked the engine. So much that we are not talking about a leak..it was an extreme amount as thought a fuel line were disconnected.
I have since run fuel pump without the ignition on and actually run the engine and it is bone dry.
It sound exactly like what happened with Drew (above, red 928). It was a weird and random "extreme flooding" thing.
The important piece to the puzzle, that will allow you guys to solve the mystery is this: I completely by-passed pin 87 (on the fuel pump regulator) onward. Pin 87 splits into two wires, one goes to the fuse that operates the fuel pump and one goes to the LH ECU. When I by-passed 87 (instead of jumping 87 to 30) I prevented the LH from doing whatever it is supposed to do (because it did not get power) and it flooded. -- So whatever the LH was unable to do, due to no being energized caused an extreme flooding or run-away injector situation. -- Or at least this is my theory.
Any thoughts?
Thanks!
Ed
#18
Electron Wrangler
Lifetime Rennlist
Member
Lifetime Rennlist
Member
The message is - if you don't know - change all the fuel hoses anyway.
You really don't want a toasty shark... don't make someone post the pictures - just accept it and do it as good insurance - eek!
Alan
You really don't want a toasty shark... don't make someone post the pictures - just accept it and do it as good insurance - eek!
Alan