86 S2 Hydrolocked with fuel???
10-12-2014, 01:40 PM
#16
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Show us a picture of the adapters. Some of us L-jet folks may be interested in replacing our ever aging and price rising stock injectors with a more efficient design.
Also Roger, have you inspected the wiring harness? It could be shorting and cause the injectors to act weird.
Also Roger, have you inspected the wiring harness? It could be shorting and cause the injectors to act weird.
I have the same issues, in my shop, that you guys have at home.
It's one thing to buy a set of injectors for a USA car at over $200 each, but unless Roger gets really lucky, he is not going to find a Euro injector.
I'll post pictures in a product introduction.
10-12-2014, 01:51 PM
#17
Rennlist Member
Greg's adaptor design is great - we have discussed them off list. I want a set for myself !!
Roger, a short between the two wires going to any injector can damage the LH ECU (like your was) but the short will ensure the injector is always closed. The only fault that will keep the injectors switched on and flowing is a short from the connection on the injectors that go to pin 13 of the LH ECU being shorted to ground.
Roger, a short between the two wires going to any injector can damage the LH ECU (like your was) but the short will ensure the injector is always closed. The only fault that will keep the injectors switched on and flowing is a short from the connection on the injectors that go to pin 13 of the LH ECU being shorted to ground.
10-12-2014, 02:06 PM
#18
Greg's adaptor design is great - we have discussed them off list. I want a set for myself !!
Roger, a short between the two wires going to any injector can damage the LH ECU (like your was) but the short will ensure the injector is always closed. The only fault that will keep the injectors switched on and flowing is a short from the connection on the injectors that go to pin 13 of the LH ECU being shorted to ground.
Roger, a short between the two wires going to any injector can damage the LH ECU (like your was) but the short will ensure the injector is always closed. The only fault that will keep the injectors switched on and flowing is a short from the connection on the injectors that go to pin 13 of the LH ECU being shorted to ground.
We are going to pull the injection harness and I'm going to build a new one for him. Should take care of a number of issues I see on it.
Gas shower
10-12-2014, 04:32 PM
#19
Former Sponsor
Sean came over and he has better eyes than me. Maybe gas in all cylinders. Seems like the injectors were all open. Jumped the fuel pump and all the cylinders seemed to fill up with gas.
Disconnected the LH and they stopped.
When I originally sent the LH for John Speake to rebuild he did say that there could be a short in my injector harness - it looks like that maybe the case.
Sean has a great video of the gas being pumped out of the engine.
Still $11k from a $3k car.
Disconnected the LH and they stopped.
When I originally sent the LH for John Speake to rebuild he did say that there could be a short in my injector harness - it looks like that maybe the case.
Sean has a great video of the gas being pumped out of the engine.
Still $11k from a $3k car.
Sounds like you have one (or more) injector grounds that normally are triggered by the computer, touching an engine or chassis ground.
10-12-2014, 04:48 PM
#20
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<edit; If you have some kind of forced air fan you can get flowing into the crankcase, that would help a bunch. >
10-12-2014, 10:06 PM
#24
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I don't care if you apply 200PSI to the injector, as long as the solenoid doesn't pick and move the core off the seat, they ain't going to spray. Either they all stuck open at the same time, or there's a short to ground on the harness and they all got picked and the pump was running.
10-13-2014, 01:06 AM
#25
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I don't care if you apply 200PSI to the injector, as long as the solenoid doesn't pick and move the core off the seat, they ain't going to spray. Either they all stuck open at the same time, or there's a short to ground on the harness and they all got picked and the pump was running.
10-14-2014, 01:10 PM
#27
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Before I was able to SharkTune my Murf928 Supercharged 81, my fuel pressure was 120+ at full boost.
10-14-2014, 01:52 PM
#28
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That filled up quite a few cylinders. I'm not sure if that would be the injectors I would expect one to go bad. Maybe the fuel pressure regulator?
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
10-14-2014, 04:52 PM
#29
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Give me the injectors and i'll test them Roger, at least this way you'll be able to tell if your injectors are the problem or if it's the electrics in the car.
I'd still put a fuel pressure gauge on it though for good measure.
I'd still put a fuel pressure gauge on it though for good measure.
