you all know that trouble i've been having with megasquirt and you are all more than likely sick of me posting everyday saying i can't get it to work, well today i lost it BIG TIME i spent another day in the cold trying to get it working and it just got the better of me, i was shouting, kicking stuff and just felt so pissed off!

i am seriously on the verge of ripping the whole lot out, sticking it up for sale and going back to carbs! or even worse selling the whole car!

i just getting so f**king depressed, everytime i go into the garage im in the frame of mind, oh im not going to get it to work so why bother..

sorry rant over,

p,s sorry for language

[Edited on 18/2/09 by omega0684]

Still not got it going?



I had another thought the other night (and forgot to post earlier)...

Have you got the trigger wheel timing correct? If you've got the missing tooth 90 deg before the VR sensor instead of after at TDC, your timing will be 180 deg out...

Some body help him please !!!!!!

Wish I could help mate but I know nothing about that MS stuff - it works on black magic doesn't it?

If I was a bit closer I would pop over and give you a hand. It doesnt sound a million miles away from where it needs to be.

Is there no-one close to coventry who can pop over and give you a hand?

Didnt you say it was running before xmas? And now it wont? That sounds like it should only be down to it being bloody cold now which could mean it could only be down to a couple of settings on the MS.

Have you checked the other stuff other than the ms? Not got a fuel blockage, pump failure, dodgy connection to something somewhere?

David

i checked the trigger wheel today and its in the right place. pump is priming fine, cleaned all the spark plugs, checked all my settings in megatune.

[Edited on 18/2/09 by omega0684]

I feel your pain
Having similar problems with bike carbs and Megajolt so i have systematicaly isolated one bit at a time.
Sunday i finished the new loom, Edis, Megajolt and shielded cables, mounted it all on a board wired in direct power from the battery via switches and appropriate fuseing and just as i was getting ready to load the maps (2 map option) the computer decided that only COM port 13 or above would be available.
Bu99er

ime in coventry, squirted my engine, maybe i could help? someone fill me in? pls

here is my previous thread and will explain my problems

http://www.locostbuilders.co.uk/viewthread.php?tid=106666

Hi there

I have day's like that!!

Is there nobody on here who is local to you who could come round and have a look?

I think there must be around the Midlands area,to be honest if you put up a post to that effect i have always found people on here very good and if you throw in tea and biscuits they ushually flock round!!

Good luck chin up

Where in Coventry are you ? I'm not a million miles away , and have nothing planned saturday morning ?
I could bung in a bag of tools , laptop etc and have a look ............. cant make it in the evening as the headlights have packed up on my Fury

claire im just at the bottom of the M69, i am happy to hold a gala and make as much tea and buscuits as people can eat and drink!

i will even provide a beer to the one that starts her up! (i only have carling)

p.s claire you dont have to come in the fury just come in tin top

[Edited on 18/2/09 by omega0684]

[Edited on 18/2/09 by omega0684]

Since you are in Coventry this man may stop you from phoning the Samaritans.
He is knowledgeable on Megasquirt and helped me with my MS problems. His rates were reasonable.

John Skeldon
Auto Electric Solutions
tel 0121 684 0734
mobile 07966 184636.
He lives in Castle Bromwich, so not far away.

quote:

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Originally posted by omega0684

p.s claire you dont have to come in the fury just come in tin top

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Sounds like ignition to me - you could try disconnecting the injectors and a quick squirt of easy start down the tbs to rule out the fuel side of things. Do you get rpms displayed properly on the laptop when cranking?
Ben

ben: yep cranking rpm is displayed in megatune, cranks about 250 rpm

the way im thinking is that during cranking i am loosing power to something and that is what is stopping it from firing, may sound silly but its all i can think of at the moment, im just going over the wiring diagrams on the extraefi website at the moment.


[Edited on 18/2/09 by omega0684]

I've never done MS but would like to at some point, I can't make Saturday but if you need someone to point out the obvious / ask the silly questions that make you go "oh god of course" later in the week (weds?) I'm more than willing to come round and take a fresh look at it.

(but go with other offers first - esp if peeps have done it before).

Have you tried using a separate battery to power the MS to rule out the battery / starter drawing too much power? Seems a simple test.

When I first got my ms running I found that I needed to disconnect the coil +12v from everything else and connect it directly to the battery cable. It turned out to be a weak connection at the key switch. It would run but popped a lot and wouldn't take any load before blowing the sparks out. Do you have a fat blue spark?

yep have plenty of sparks! im thinking of rewiring tomorrow so that there is an independent 12v to the MS.

mike im happy for you to drop by anyday mate just let me know when you want to come over.

[Edited on 18/2/09 by omega0684]

Definitely worth a try. But if you have a sensible rpm reading while cranking it shows the ms is not going mad and is seeing what it should. Have you run a datalog while cranking? Also have you checked the timing with a strobe?

If you have a good spark then as already suggested try a squirt of Easistart or brake cleaner down the inlet . If the engine fires up and runs for a second or two then the problem is fuel related. Not enough to start from cold perhaps? . If the engine does not fire then the ignition timing may be out or even firing on the wrong stroke in that case try swapping leads no 1&4 over with leads 2&3. Might be worth checking the valve timing just in case?

Mate dont give up. I got like you with my carbs etc only i was ready to throw in the towel and inject it. Now iv sorted it is fecking superb and fast as hell!!

[Edited on 18/2/09 by Danozeman]

Im off work for a few days and can call over for a look again if you like.As suggested try some easy start or brake cleaner down the inlets, if it doesnt fire then it would suggest the sparks are at the wrong time or to weak.Have you tried fresh plugs or heating the existing ones to red heat with a blowlamp as they may be to wet to spark under compression.
Paul.

Hi Dan
What was the problem in the end?
Paul.

quote:

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Originally posted by Danozeman
Mate dont give up. I got like you with my carbs etc only i was ready to throw in the towel and inject it. Now iv sorted it is fecking superb and fast as hell!!

[Edited on 18/2/09 by Danozeman]

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My advice - and I know how you feel - walk away and go to work. Suddenly the car looks like a lot of fun. It's amazing really.

quote:

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Originally posted by snapper
I feel your pain
Having similar problems with bike carbs and Megajolt so i have systematicaly isolated one bit at a time.
Sunday i finished the new loom, Edis, Megajolt and shielded cables, mounted it all on a board wired in direct power from the battery via switches and appropriate fuseing and just as i was getting ready to load the maps (2 map option) the computer decided that only COM port 13 or above would be available.
Bu99er

---

Personally I'd put some fresh plugs in it (that way you know they're not flooded with fuel and not firing when under compression), disconnect the wiring to the injectors (so you can't flood it), turn it over and try some easy-start in the inlet.

If that doesn't work then it's a timing issue. It'll be something stupidly simple in the end- a real "doh" moment.... It's not something really silly like connecting the fuel rail back to front is it? You get massive fuel pressure in the pipe and crazily rich running.....

I had a problem with my injection on the Cat which happened once or twice, the injectors, although clean, would stick closed if left for any time flashing 12v across them would free them. I would try the easystart to check for fuelling issues first and then work from there.

If its really being a bugger of a day... WALK AWAY. Go have a walk, have a cup ot tea (no beer) then return an hour later.

I used to fit Strowger (Electromechanical / Non Electronic) Telephone exchanges in a former life, and believe me there are a LOT of wires to terminate, and a right cow when it had a fault. You may have seem the number of wires in those green boxes on the side of the road. Well.... Imaging that being a three storey building FULL of wiring like that.
Somtimes the mind cannot see the wood for the trees. You need to give youself that break and take you mind off the problem. It really does help, and saves a fortune in phone calls to the Samaritans.

The walk away and tea routine works well I know. Take your time, and go step by step.

You know you have plenty of support from the forum.


You WILL get there in the end... It might just take a little longer than expected.

Its probably something simple.... It usually is.

Good Luck.


PS... Don't pop a fuse in your brain by stressing... regardless of how difficult it may be. You health is more important than anything.