Weak/poor spark
Turbo Mini Forums

Trying to get the car started (no intercooler as of yet, but the turbo is all plumbed in now) and its just not kicking into life.

This is a new megajolt v4 setup so I havnt seen it working, but looking over the wiring diagram everything looks to be in the right place. The power LED on the megajolt is lit.

I took a spark plug out (brand new set) and cranked the engine with the other three in and saw a feint spark.

By this point the battery was dying, could that be a problem? I'll hook it up to my girlfriends car and see if it makes any difference when she gets back.

Any ideas/suggestions?

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

have you checked the spark plug gaps? thats more likely to be the issue if you're using an MJ.

Yep, set to .8 with a feeler gage

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

Crank sensor?

On 5th Oct, 2014 Shauna said:
What that's crazy, you go commando hahaha! How heavy is your helmet ?

All the above, may be also goosed out coil

Can this cause a bad spark? I havnt changed it myself as it was secured in the bracket when I bought the kit of someone, and seemed to match the pulley? I'll measure the gap when I get back, what should it be?

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

A gnats nob end, sorry out on me phone at the mo but should be easy enough to find, no edis on yours so I would say crank sensor is possible, have you tried it with laptop connected?,as benross says check coil also there are 2 coils one left and right viewed from the front with the connector at the top, if its the same 2 on one side, one half of the coil could be goosed. MJ are a bit fussy on spark plug gaps but only really under power/load should start and idle pretty well. Get a fully charged battery on there and also check you are getting 12v at the mj when cranking.

Edited by oli79 on 21st Sep, 2012.

On 5th Oct, 2014 Shauna said:
What that's crazy, you go commando hahaha! How heavy is your helmet ?

Okay, thanks for that, I'll have a look at the crank sensor.

Any way of telling if the coil pack has passed away?

And it might not be the v4 then if that doesn't have an EDIS, as this does.

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

That was me being presumptuous, in that case forget mj start at the edis check under cranking and full 12v supply to that, it should start and run mine with no mj at all, so get this sorted first. Read what I have put about the coil pack above, check 1 plug from each bank if they are the same then possibly not the coil, if they are different they perhaps the coil

Edited by oli79 on 21st Sep, 2012.

On 5th Oct, 2014 Shauna said:
What that's crazy, you go commando hahaha! How heavy is your helmet ?

I'd start by whacking a good battery on it.

In the 13's at last!.. Just

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

Dad took the multimeter to it today, I have no idea what he was looking at on it, I'm assuming checking everything was doing its job properly, it showed everything was as it should be apparently, which means it's probably the coil pack, as the signal to it is fine.

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0