need help have no spark
hi ive finally gotten my mb project ready to go, car has F6A DOHC turbo, running haltech E6X ECU, everything registers on the comp but im not getting any spark. i have tried 3 different new coild and still nothing, everything has been wired correctally and i have check it a heap of times just to be sure. i have double check earth on the coil and that ive wired it correctally, if anybody can help it would be great.
Stupid question, but you have installed an ignitor yeah?
F8B EFI turbo - Three pots and a snail.
yes i have al new haltech gear, haltech coil pack, haltech ignition module, haltech trigger sensor, haltech injectors, haltech ECu, haltech map sensor, everything that is needed for this car wireing and running wise electrically is all haltech, everything has been done by the book, followed all wiring diagrams and user references in the book, left all wires longer then i needed in case of mistakes double and even tripple check everything, i have good ground and good cranking, everything except the spark and the injector pulses are working, i have even rang haltech themselves and they keep telling me that it is the coil pack ive changed it out 4 times allready im sitting in the car right now trying to get it to work nothing is happening, not only has this thing given me the shits but ive come to the point where im about to take a hammer to this haltech piece of shit ECU and throw the old F5A back in and run it with it's very reliable 345000k's, might chew oil but at least it works.
The only thing I can suggest is an issue with the CAS that is preventing signal from getting to the ECU. I had this problem with my Microtech which prevented it from triggering the coil for spark.
F8B EFI turbo - Three pots and a snail.
Sounds like the fault might be with the ECU itself.
F8B EFI turbo - Three pots and a snail.
thats what i am thinking i had it cranking over for about 2 mins straight and when i took my hand off the key the fuel pump kept running and the injectors kept fireing which indicates to me that they are fine i just aint getting that all important spark. i am going to have another look today once the car is in the shed and im not getting rain on me, and most likely after ive had a ciggie or 10 i might have the patience to sort it out. thanks for the help anyway. ill be moveing back to albury very soon once the mb is on the road.
Wait wait, are you sure the coil is wired up correctly? I had the problem of the engine not cranking over and it turned out I had accidentally wired the ballast resistor up wrong, which meant I was only getting 9V on crank and it wouldn't start.cozza wrote:thats what i am thinking i had it cranking over for about 2 mins straight and when i took my hand off the key the fuel pump kept running and the injectors kept fireing which indicates to me that they are fine i just aint getting that all important spark.
F8B EFI turbo - Three pots and a snail.
If you're getting injector pulse and fuel pump priming then the problem has to be either that the signal isn't getting to the ECU, or there's a problem firing the coil. So the narrow scope is that there's a problem with the CAS, ignitor, coil or wiring. Worst case the ECU is fried, but generally you get nothing in that case.
It could also be that the ECU is loaded with the wrong map or engine config data?
It could also be that the ECU is loaded with the wrong map or engine config data?
F8B EFI turbo - Three pots and a snail.
HHHmmm wonder if you are using a "home" signal (sequential) or batch fire of injectors?(must have the correct mode selected based on trigger type) are you seeing a cranking speed of around 200rpm's? other then checking the voltage at the coil and ECU while cranking and that you have selected the correct type of sensor input (reluctor/hall effect).An oscilloscope will be required to go much further if none of the above work I am thinking; but it could just be the 
talking
Also wondering if you are using seperate coil/ignitor for each cyclinder or single coil/dizzy?and how are the earth connections Body/ECU/-ve of battery (this is VERY important)? with the plugs out of the engine and cranking can you get a spark? have you tried altering trigger angle to get motor to fire if you have a spark?
.....Well plently to try.....
talkingAlso wondering if you are using seperate coil/ignitor for each cyclinder or single coil/dizzy?and how are the earth connections Body/ECU/-ve of battery (this is VERY important)? with the plugs out of the engine and cranking can you get a spark? have you tried altering trigger angle to get motor to fire if you have a spark?
.....Well plently to try.....
Get with it ,Get over it ,Get on with it .....OR LEAVE
ok im useing a reluctor setting, multipoint for the injectors, single coil, dizzy, getting 250rpm on crank, everything that say it needs a body earth is getting body earth, everything else is getting a ecu earth like it says in the book. i have absoulutally no spark ive put the old mb coil back in the same way it was when i removed it thank god for photos, and i still have nothing.
Most ignitors need to be bolted to the chassis of the car to get a good earth. They usualy have a metal grounding plate of some sort on one side near/around the mounting hole.
There were a couple of Cappo guy's that didnt bolt theirs to the chassis and had no spark.
There were a couple of Cappo guy's that didnt bolt theirs to the chassis and had no spark.
what ive just came across may be the problam i was searching on the net and found that a reluctor type trigger requires an ar10 reluctor adaptor to convert the signal to a digital square form, if this is the case i think ive found the problam as i dont think the haltech E6X ECU is capable of changeing this on it's own. i have the ignition module mounted to the firewall and scrapped all the paint off from the mounting surface to assure i have a good earth then put a little paint over it just to make sure i dont get any surface rust. can anybody tell me if i definetally have a reluctor type sensor in the dizzy?