Ok...Im in serious need of the brain trust. I have no spark!!!

430 Views 6 Replies 3 Participants Last post by mrkrad, Jul 20, 2003

DubG60

Discussion Starter · Jul 18, 2003

Ok...So the monster is together...In...Turned over. I have fuel...But as far as I can tell, no spark. Pulled #1 plug wire and put a plug in. No spark. Put another wire on the coil with a plug. Again no spark. Im getting fuel to the rail (under pressure but nothing to the return) and I can smell it. But I cant get anything from the coil. What could be causing this?
My list to check tomorrow includes:
ECU connection (check)
ECU ground (check)
Coil power
Coil
#30 Relay (saw somethin bout it in the search...Anyone???)
Check the fuel pump for longer than 2 sec run for hall sender signal(Search) (check)
I stripped and rewrapped the entire harness while the motor was out and searched for brittle or broken wires and connectors and replaced them with new connectors/wire via soldering iron. So I kinda doubt its a bad wire. My question is...There is one ground coming out of the harness along with the tach signal wire (green one) Is this a ground for the coil? Or where would the coil ground lead? And something else I came accross...Coil is black wire to hot side red to ground correct???
Help me out guys...Im hertin for a drive rite now

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mrkrad

· #2 · Jul 18, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (DubG60)

I dunno (its early) but i remember if you unplug the black wire on the coil the car will die.
I was mucking around with the split sec unit and noticed that.

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jwatts

· #3 · Jul 18, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (DubG60)

check that your dizzy is in order... Hall sender and all that.
Have your boy come over with his Golf G60 and compare the wiring at the coil, since his runs

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DubG60

Discussion Starter · #4 · Jul 19, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (jwatts)

No dice...ECU relay is good. Pulled it appart. Coil Ohmed to 1 ohm (spec is .5-.8 so Id say its close enuff). New dizzy did nothing (off of running car) Compared wiring to another STOCK corrado. Everything jived. ECU is plugged in...Now tell me wut the problem could be.

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jwatts

· #5 · Jul 19, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (DubG60)

did you try your ECU in another car to see if it's still healthy?
is the ECU screwed together solidly? doesn't take much movement for the contacts not to jive.
If your ECU is healthy, you need to start tracing your harness... again. If you're getting fuel through the injectors, then you need to concentrate on the ignition side of things.
One quick way to check for power from the ECU would be to check the voltage at the WOT/IDLE plug. You should be seeing 5V at the WOT and Idle switch leads. Middle wire is a common ground.
Use this link, if you haven't already.
http://www.snstuning.com/ecu.htm

Modified by jwatts at 12:22 AM 7-19-2003

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DubG60

Discussion Starter · #6 · Jul 19, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (jwatts)

IT WAS FUEL!!! Went thru EVERY test in the bentley...Decided I wanted to see something (since I didnt see any fuel in the return line)...Injectors click...But theres no fuel in the rail AT ALL. Gets to the FPR but not past it so Ima go see wut the deal is. But on the upside I didnt ufk up the wiring Hahaa. Dam that makes me feel ALOT better. Anyone got any clues??? BTW...Its a 1.8T rail so it aint quite the same...But the theory is

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mrkrad

· #7 · Jul 20, 2003

Re: Ok...Im in serious need of the brain trust. I have no spark!!! (DubG60)

well its fuel pump -> fuel filter -> rail input
so theres little to block the fuel pump, unless its kaput. right?
even if the fpr was shot it would still spit some fuel into the cylinders.
since the fpr is on the other END of the fuel rail.
Take the fuel input line off aim it into a jar
turn on the car, hear the fuel pump? see the jar filling? if not you can work
your way back.

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