Gre3D
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| posted on 20/2/17 at 05:48 PM |
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duratec ST cranckshaft sensor ° before tdc
hi guys
last night i tried firing up my st170 engine,
it has the 1.8 zetec flywheel.
i'm running megasquirt 1 with msextra code and i modified it to work without ford edis module.
i calculated fuel VE and spark tables aswell as the fuel requirements. so i should have an ok basline to start it up.
i told megasquirt the sensor is at 89° before tdc since it doesn't take 90°.
i fired it up, and it sputtered. when i depressed the accelerator all the way down it would keep running but only at about 1000rpm and not very
nice.
i fidled around a bit and changed the tdc point to 60° in megasquirt. now it's starting up a bit better, i can rev it. but it still won't
idle and genearates a LOT (!) of black smoke. so still too late of an ignition i'm thinking.
now my question is; everywhere i read that the missing tooth on a zetec is 90° before tdc. why won't it run that way? and what could cause
it?
tonight i'm taking the strobe light to check what the timing really is. should clear some things up.
thx!
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obfripper
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| posted on 20/2/17 at 06:52 PM |
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Are you using ms1/extra and setup as below?
EDIS4 replacement
36-1 wheel aligned the same as EDIS4 (shouldn't be an issue with oe flywheel)
trigger angle=60
Timebased cranking and 10deg cranking angle.
trig A=3
trig B=21
Use two VB921 to drive the coils and set LED17,LED19 as spark outputs.
Spark output "inverted"
Dwell control with 5ms cranking, 4ms running and a 0.1ms min discharge.
These settings should be correct for your vehicle, so long as you have a standard vr sensor mounting.
Dave
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Gre3D
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| posted on 20/2/17 at 08:04 PM |
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I have it like that :-) i've been running this system for about 2years now Without problems.
I just changed the engine from inbetween everything 
I fixed ignition to 0° and checked with strobelight and 60° seems to be spot on indeed
I managed to get it running and idling somwhat. But i had to change required fuel from 10,5 (what tunerstudio calculated for me) to around 1.5 ...
That cant be right, right?
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