tim windmill
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| posted on 3/9/07 at 04:52 PM |
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megasquirt help
Still had no success in getting the car to start, i am trying to run blacktop zetec with megasquirt using a griffin inlet manifold which allows the
use of standard fuel rail and throttle body, ive got fuel pressure had injectors out connected to fuel rail and all appear to be firing, i have prime
pulse. i am dring the coil pack from the megasquirt and have no edis, checked coil and its ok. wheel decoder settings are set for 36-1 but i can only
get a spark when i have the settings as "timer Based" and it will not spark if set to "trigger return" . i have rpm
signal,
but engine still wont cough or do anything, tried loads of varius maps and all input ok but end up with same result, i have to alter them to timer
based t o get the spark. Anybody got any ideas
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MkIndy7
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| posted on 3/9/07 at 05:09 PM |
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These are the base settings that were supplied with my megasquirt for the Ford 36-1 wheel, maybe worth comparing.
 
Ford 36-1 settings
Could get you the current ones as well if that would help?
[Edited on 3/9/07 by MkIndy7]
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tim windmill
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| posted on 3/9/07 at 05:35 PM |
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i have tried those setteings and it will not spark if i alter trigger return to time based then it sparks, but all my wheel decoder settings are set
for the 36-1 trigger wheel, i am pressuming that the reason it wont fire is because the spark is being triggered at the wrong time. Tried spraying
wd40 in the inlet manifold and still the same.
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oliwb
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| posted on 3/9/07 at 05:39 PM |
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Sounds like the timing is out. Check the basics, that the trigger wheel is in the right place (zetec usually on flywheel so prob not a problem for
you). Check wiring to the coil packs. Could be firing the wrong batch at the wrong time etc.
Start with the basic stuff and work towards the harder stuff and you'll solve the problem eventually. Oli.
If your not living life on the edge you're taking up too much room!
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Andy W
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| posted on 3/9/07 at 05:50 PM |
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You know the answer Tim, fit the bike engine now. I got another zx9 engine for less than the cost of your inlet manifold.
Andy
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MkIndy7
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| posted on 3/9/07 at 06:04 PM |
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Has it ever run on the Megasquirt?
As said in the previous post, Updating ours with EasyTherm really screwed it up and it just wouldn't run, even with those settings I posted
being copied into it.
I just opened the original .msq file were were sent with the Megasquirt and it all worked again, even with the new temperature info.
Where did the Megasquirt come from?, ours has a list of items that you MUST check after updating the temp sensors etc. Things like which output (LED)
is configured for spark etc.
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omega 24 v6
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| posted on 3/9/07 at 06:18 PM |
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Also check that you've not got it set for stim for wheel.
If it looks wrong it probably is wrong.
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roadrunner
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| posted on 3/9/07 at 06:44 PM |
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Tim, even if the plugs are trying to fire at the wrong time, you would still get something happening, ie:- great big bangs, maybe on your trigger
setting it's not fireing your injectors.
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tim windmill
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| posted on 3/9/07 at 06:49 PM |
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rayward built the megasquirt and it all seems fine on the stim, the engine has never been running on megasquirt or ben apart i think it must be the
timing that is screwing it up but cant figure out how. As said using zetec flywheel so that only fits one way and vr sensor is in a set position, i
think i will re install megatune and see if that makes a difference
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matt_claydon
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| posted on 3/9/07 at 07:05 PM |
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Check the spark while cranking with a timing light, that's the only way you'll know if it's sparking at the right time or not.
Can you upload your msq?
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Dusty
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| posted on 3/9/07 at 07:59 PM |
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You haven't got an engine out of an automatic and fitted a new flywheel by any chance. They need the non auto crank sensor.
Also crank sensors are polarity sensitive.
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zzr1100rick2
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| posted on 3/9/07 at 07:59 PM |
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are the plugs wet as they should be if injectors are firing and not sparking
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MkIndy7
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| posted on 3/9/07 at 08:09 PM |
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Please feel free to reply with lots of expletatives... but could you put the standard Zetec ECU back on it?
It would save you a HELL of ALOT of STRESS! 
Because once you can get it started on Megasquirt it doesn't get any easyer!
I am one of Megajolts biggest fans, but Megasquirt, forget it! (please feel free to remind me of this post if I ever get it running well and begin
singing its praises)
At the moment mine sounds like an Impreza, Sups Fuel like a Impreza.. and goes like a Justy! (and won't turn over when warm!)
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TangoMan
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| posted on 3/9/07 at 09:37 PM |
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Tim, where abouts in East Yorkshire are you.
I set mine up with no bother at all and am happy to come acroos for a chat. I could bring the laptop with megatune on with some of my MSQs from when
it was standard.
Don't be fazed by the challenges, or the doubters, it will work if you set it correctly.
As Dusty said, have you got the VR sensor wired the right way around.
You are getting no sparks unless time based and may not be getting any fuel except for the intial prime pulse. This could suggest your VR sensor is
either wired wrongly or is knackered.
This would be my starting piont.
Summer's here!!!!
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Chippy
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| posted on 3/9/07 at 09:46 PM |
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Maybe a silly question, but has the MS unit been set up to run as the edis unit, or has it been set up to run with the edis unit. I am
going to have to rewire a part of my MS as I intend to do the same, use it as the edis itself. Cheers Ray
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tim windmill
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| posted on 4/9/07 at 06:58 AM |
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Tangoman i am in south cave in east yorks just at the end of the m62 about 12 miles west of Hull, The engine was from an auto and it has had the
flywheel changed to a 1.8 escort, i did change the housing of the vr crank sensor to a manual but used the same sensor in the new housing.
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tim windmill
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| posted on 4/9/07 at 07:54 AM |
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removed vr sensor and cleaned tried wiring opposite way around and get spark on either trigger return but still wont go, after cleaning vr sensor
returned wiring to how i had it originally and it will now spark on trigger return or time based. Still nt getting any fuel to plugs, treid squirting
wd40 through the inlet manifold and no joy, removed fuel rail get priming pulse and a squirt of fuel, with the fuel rail off the car with injectors
connected continually cranking and fuel is squirting out , refit the fuel rail and no fuel at plugs, removed inlet manifold and everything ok , i can
hear fuel flowing back to the tank after the regulator but i cannot understand why off the car the fuel is squirting ok but when on the car its not, i
am stuck now! where is the fuel going if not to the cylinders as said before it wont even cough.
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omega 24 v6
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| posted on 4/9/07 at 09:21 AM |
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If the injectors are powering while off of the car then it's very strange they do no while on the car.I had an immeddiate thought that perhaps
there's an electrical fault ( perhaps a live to the squirt case) which would/might stop the switched negative of the injectors. The more I think
about it as I'm typing the worse an idea it becomes (but first instincts and all that) especially if the case is bolted to a non conndutive
panel. A quick try with the case held in your hand might be an idea.
This is becoming one of these strange ones.
If it looks wrong it probably is wrong.
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MkIndy7
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| posted on 4/9/07 at 04:50 PM |
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The valves can't be opening at all then if no fuel is getting into the cylinders.
If fuel and sparks are being delivered then regardles of when they arrive it should make some cough or bark or something.
Are they Hydraulic Tappets in the Zetec?
For some reason could they not be opeing, I know when my dads Hyundai's low on oil and parked up the steep garage ramp, or if its left for a
while after doing an oil change its a real Ba*tard to start as the oil must drain out of the head so the valves won't open, It just spins and
spins like there's no real compression till oil pressure builds up again.
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tim windmill
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| posted on 4/9/07 at 04:56 PM |
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just put a multimeter on the megasquirt case when cranking , no problrms there. A problem that i have is the fuel pump is wired through a relay and
runs continually. On turning on the ignition the megatune says the pump is running for 2 secs and then turns off (which i think is correct) and then
when cranking the megatune says that fuel pump is on, but as said the fuel pump runs continually. i wonder if this is having some effect on the
injectors? have i got my relay wired correctly. pin 30 +12v ignition swiched live, pin 86 linked to pin 30 +12v live.pin 87 to fuel pump. pin 85 to
megasquirt
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tim windmill
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| posted on 4/9/07 at 05:00 PM |
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solid lifters on the phase 3 blacktop
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MkIndy7
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| posted on 4/9/07 at 05:13 PM |
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That sounds about right, we've had a problem on ours with the alternator backfeeding an ignition relay so the car carrys on running unless
something high powered is switched on such as flashing full beam or the cooling fan on.
From what i've just posted, I woned if its worth turning the engine over with no inlet manifold on and check the valves open.
Another idea i've just had, What would happen if the inlet valve was slightly open when the piston got near the top of its stroke and it filled
the inlet runner with a 80PSI charge of air (if the throttle butterfly was closed).. could that actually stop any fuel coming out if the injectors
when they open, if the fuel behind them is only 60PSI?
Could that be why there not firing when the on the car maybe?
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darrens
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| posted on 4/9/07 at 09:15 PM |
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Few questions first:-
If you have no rpm sigal your injectors won't open + no fuel pump and no spark.
Are you driving the coil pack directly? i.e wasted spark??
Cheers
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Krismc
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| posted on 4/9/07 at 09:50 PM |
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Got several MS maps, here you can give them all a try if you wish, mine is running but still requires a tune(over my head)....still aint found anyone
in the newcastle area with the know how!!
quote:
That sounds about right, we've had a problem on ours with the alternator backfeeding an ignition relay so the car carrys on running
unless something high powered is switched on such as flashing full beam or the cooling fan on.
my car has done this a few times, how did you cure it in the end??
Built, Ivaed, Drove and now Sold - 2011 MNR VORTX RT+ 2000cc Zetec on R1 Throttle boddies.
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MkIndy7
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| posted on 4/9/07 at 10:05 PM |
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We put a Diode in line with the Dasboard light, so it still illuminates when the Ignition first goes on.. and thus presumably works still when its
required.
No idea as yet as to how its was backfeeding but I suspect it was through the Immobiliser we wired in.
As we wasn't sure of the Amperage rateing of the Immobilizer we fed all the Injection system through a relay thats coil was fed by the
immobliliser.
A back feed from the alternator charge light must have been just enough to keep this energised, even after turning the ignition completely off.. it
would just keep running until you pulled out the immobiliser, or flashed lol.
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