Mega jolt won\'t start
Turbo Mini Forums

hey i'm a bit out of my element but you got to learn.

i have the mega jolt all wired up, getting power

used proper shield wire etc.

im trying to start the car but all im getting is a poping sound out the exhaust almost small back fire pop sound.

just keeps popping but no fire up! ""edit""

it turns over fine (starter) won't fire up

what have i done wrong?

maybe wrong sequence plugs?

what is the correct way?

so back to the good old dizzy for now untill i can work it out

thanks.

Edited by NickG on 3rd Nov, 2010.

The plug numbers are marked on the coil pack.

WHat do you mean by won't turn over? Is your starter not working?

Probably the plugs out of sequence, the numbers on the coilpack represent the cylinders, not the firing order.

If not make sure the VR sensor is in the correct place, and adjusted on the software to fine tune it.

The "won't turn over" phrase is a bit confusing as you say it is attempting to start but popping/backfiring.....

First try to start it with the MJ unit unplugged, ie just with the VR sensor/triggerwheel, the EDIS unit and the coilpack. In this mode it runs a fixed 10 degree advance.

If the result is the same and the HT leads are on the correct coilpack connectors (which are numbered as Andy says) its most likely either,

wires between EDIS and coilpack reversed (did you make your own loom ???), or

missing tooth in wrong position relative to VR sensor (common misunderstanding of what the 9 teeth position actually means), or

sensor to trigger wheel gap wrong.


There are other possibilities but those are the most obvious from your description.

Schrödinger's cat - so which one am I ???

sorry lads.

I meant it is not firing. the starter works fine.

this is very silly i'm sure but i just trigger wheel on just how ever? are the teeth meant to sit a certain way before you start?

the vr sensor is a kit though & sits in the right spot right distance, you can't get wrong.

im sure Ben who did the sc12 kit said it sits top dead centre or something.

I don't know the firing order of a mini, i have always just painted it on my leads & dizzy and plugged them up that way lol.

:$:$:$:$


so you will have to be clear.

i do see the numbers 1 2 3 4 though.

is it any different to my distributor?

it's 2..4..3..1 (radiator) ??

or 4..3..2..1 (Rad)

im just doing this my self for the first time as no one runs mega jolt in qld australia, no one to turn to for help.

so apologise now for the silly questions.

im using Sd mini's wire kit. :$

Edited by NickG on 3rd Nov, 2010.

Each plug on the coil pack is numbered 1-4. No 1 plug is by the water pump. Running right to left, number 4 is by the flywheel.

The missing tooth should be picked up 90 degrees before top dead centre.

This picture show's it quite well.



Ignore the bit about 100 degrees as that was part of a discusion on the sensor position for out van.

ok thanks. I had no idea the trigger wheel had to be a certain way kinda.

i remember ben telling me it is set up top dead centre or something.

i just thought it would pick up as it spun around with the vr sensor.

it's either i put the spark plugs the wrong way or it's not top dead Centre.

im sure with bens kit you can only put it on top dead centre.

so i reckon i put the plugs around the wrong way.. lol.

thanks Lads

will give it another crack tomorrow.

Edited by NickG on 3rd Nov, 2010.

It's the missing tooth that is important, all the rest are just 10 degree timing check signals for the processor but the trigger (the missing tooth) must be sensed 90 degrees before TDC for the processor to have time to calculate the spark degrees.

Schrödinger's cat - so which one am I ???

TMake sure it's 90 degrees before top dead as that is what MJ/EDIS is expecting.

I'll have a look at my pulley etc from Ben tonight if you get stuck

i would assume bens kit can go only 2 ways? 90 degrees or 180 degrease

i have the later kit that is laser cut & mounts from the radiator bolts.

but same trigger wheel

http://img.photobucket.com/albums/v668/ben92/P1010251.jpg

Edited by NickG on 3rd Nov, 2010.

that's the same as mine. I think mine was the prototype

yes he makes a good kit!

would it start if it is upside down? or would it be 180 degrees out?

fingers crossed i put it the right way around.

it's not hard to change though.

Edited by NickG on 3rd Nov, 2010.

It would be sparking 180 degrees out

Correct - just like if you put the dizzy or dizzy drive shaft in 180 degrees out except that it's only half as bad on the crankshaft if the trigger wheel and/or sensor is 180 degrees out.

Both will cause pops, bangs, backfiring etc once the engine has been cranked enough times to get fuel everywhere...

Schrödinger's cat - so which one am I ???

cool.

i guess ill fire her up tomorrow ill soon know.

i had the plugs wrong i checked.

I bets its the plug leads. If you have attached the wheel as per the pic you posted above its correct.

Thanks was the pic Ben first sent me when I had the first kit he made :)

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!