Gregor

Hej All,

Has anyone got a sparktable suitable ( 12x12 ) for my 2.0 zvh engine on efi..

Should be for 0-6500 rpm and about 0-200 kpa ( 14 psi )

I'm having some bad misfires above 5000 rpm so hopefully anyone has a basic sparktable for me to work from..

Thanks

pa_sjo

You could try something like this... figures for each corner of the table..

9---14
| .. |
18--30

.. and fill in the gaps (interpolate smoothly).. assuming the top line is 200kpa..

JesseT

This might be a start:

Gregor

Thanks again, JesseT

I'll give it a go this afternoon..

pa_sjo

Don't mention it!!!!!!!!

Stu @ M Developments

iTrader: (12)

Why bother eh?

Gregor

Hej Pa sjo,

Didn't see your reply at first....

Thanks.

The general idea is clear to me.

I'll try somthing later today

Gregor

Well, tried several tables but it doesn't go above 5300 rpm.
After that it sputters and doesn't revv any higher like it's going in the revv limit, wich is set at 6600 at the moment...
should be another problem then

pa_sjo

What plugs/gap/boost?

There are a few settings in megatune that could be causing this.. you can send me your msq if you want.

Gregor

Hej Mate,

Plugs are ngk with standard gap.
Same one as i had with mfi just new, worked fine for it then @ 12 psi

Boost is 200 kpa ( 14 psi ) max for now but it doesn't matter what boost i run.

Had the same problem today with about 150 kpa ( 7 psi ) at 5300 rpm.

It would be great if you had a look at my msq, thanks.

CombatSapph

Are you using a 36-1 or 62-2 trigger wheel by any chance?

If so, it sounds like your VR snesor to wheel clearance may be a bit big - try decreasing the gap. I know the EDIS manuals say <1mm but it really needs to be less than 0.5mm on an MS install.

Also, how many turns do you have on your VR pots?

Gregor

Hi,

Tried to set the vr pots at any way but didn't work.

The ZVH has been converted to Full zetec turbo now and i'm mapping it at the moment.
Still issues with revs but when i rev it in neutral it goes well above 6000 rpm without problems so have to finetune it a little

Rick

Jesse's table is too advanced for a 16v - be aware of that.

Gregor

Hi Rick,

What do you reccon it should be for a 16v then ... thougt 12 on full ( 250 kpa ) boost @ 6500 rpm would be ok?

Thanks

CombatSapph

Classic symptom of the VR pots being wrong and the VR sensor gap to big on a Megasquirt install.

Turn the VR pots fully anticlockwise and make the VR sensor gap to 0.5mm or less.

Gregor

Turned the pots all arround at the time... thing is... when it's in neutral it revs above 6000 nicely.

CombatSapph

Which, as I said, is a symptom of the VR sensor gap being too big.

Gregor

Well i'll give it a try getting it closer but i don't understand what's the difference between revving in neutral or when driving when we're looking at VR sensor and how close it is?
thanks

Rick

It is, but you have 20 degrees at 1 bar which is likely going to be too much unless you are under 8:1?

Post a data log of your issue, along with your MSQ and i'll take a look.

Rick.

Gregor

OK, I haven't used that map but one of my one but was gonna try it.

CR is 8.5:1

I'll post a data log along with my msq asap.

Did a run today but on two ocasions th injectors were closed fully but you'll see it in the msq.

Also it's far to rich on boost... well anyway, i'll post it tonight.
Would be great if you would have a look at it.

Gregor

Tried to send it t your hotmail but it bouched back...

Don't know how to put it up here...

Gregor

I've put the sensor a little bit closer and it seems to be working..

Peak rpm wich i've had is 6885 and gets over 6500 easy.

Thanks.
Although i stil don't quite understand why it was reving enough standing and not driving, but no complaints as it's working now.

Thanks

xr2wishy

iTrader: (2)

when the car is moving, there is more strain on the whole electrical circuit, i.e. load and the electrics may suffer from poor earths, therefore the cps will suffer from interference a little more and may struggle to detect the pickups properly.

Gregor

Ah i see,

Thanks for explaining.

Red_bull

all the little things you have to think about

Good luck with it mate!

Gregor

Thanks,

Indeed, but we keep on learning