Silvertop in AW11 suddenly wont start

[cogent]

ok this has me a bit stumped.

got my flywheel all tightened up on saturday, installed the clutchpack and bolted the gearbox on and mounted up in the engine bay. then on sunday i did the driveshafts, clutch slave cyl, shifter arms, plenum etc etc.

turned the key, fired right up to an idle of 1000rpm. chucked the wheels back on, dropped it on the floor and started again no worries and backed out of garage. checked water, needed to be topped up. stopped/started it around 9/10 times over the course of half an hour with no problems at all.

got the water topped up, went to put the air filter back on, wrangled with it a little (tight fit with the AFM in the way) and then it stopped starting. just cranks over and doesnt catch.

i checked all the connections around where the air filter sits in case i knocked something loose but everything is fine.

fuel pump whirrs when you have the car set to 'on' and push the AFM flap, so i presume its getting fuel

the sparkplugs are fine, not fouled or anything and spark when cranking, so i presume its getting spark

i pulled the plenum etc out and theres nothing blocking anything, so i presume its getting air

I swapped out the ignitor module with no luck, same with AFM. unplugged IAC-V, WTS, TPS and knock sensor one at a time and still no luck. Cranking speed is good, tacho registers about 500ish RPM at crank, voltage is good. starter lead is bolted down good and hard, grounding is good. AFM plugged in. cambelt still in one peice.

I cannot crash start it either.

got me stumped.

the wiring is proven to be working as far as i know, as this is the second silvertop i have had in this car (first one spun a bearing) and the car fired right up earlier also. just stopped starting!

edit: oh and the alarm/immobiliser has been disabled everytime i've tryed to start it.

[neo]

Ok something really simple, but in the same area (well in my car anyway), checked the EFI fuse in the engine bay? (however this would stop the fuel pump anyhow)..

The sensor plug hasn't come off the distributor?

[cogent]

The sensor plug hasn't come off the distributor?

f.ck i bet thats the one, i only checked spark at the coilpack/ignitor thing...the one with the kinglead that goes to the dizzy.

[cogent]

ok dizzy is plugged in properly, all 4 sparkplugs getting spark aswell.
also checked that alarm isnt playing buggery, used the bypass code supplied with the alarm with no luck.

confirmed that fuel is coming out the return line, also have checked for loosewires/unplugged stuff but found nothing yet.

interestingly, if you 'arm' the alarm, it cranks exactly the same way as when 'unarmed'.

[AceSniper]

ecu codes?

[cogent]

stay tuned...

[Skin]

stick to the rotaries

[Leon]

efi fuse?

[Mr Revhead]

stick to the rotaries

stfu you!




alarm.... hehehe muppet


triple checked the AFM plugs etc?

[cogent]

codes 12 and 14, which point to ecu, ignitor, distributer and a short in the wiring somewhere.

we have also determined there is no spark.

hm.

[g-lo]

take the top cambelt cover off
and check the belt turns while cranking

[Adamal]

Maybe its just trying to 'fit in' with being in an AW?

[cogent]

yeah cambelt is turning and is in one peice aswell.

hmm you're right adamal. maybe i should get an sw20 instead. Surely I could drive it more than the aw11, after I get it back from the panelbeaters a year later with its widebody kit that is

[Adamal]

Now now, no need to get nasty

I, too, know the pain of having an AW that can't get a WOF because its got rust in places which they consider "structural" (A and B pillar. Pfft. SIF!) and kinda regret taking it to get a legit WOF!

One day I'll have at least one, perhaps both back on the road

As for yours, the only thing you changed was the clutch and you'd done nothing else electrical...

By the sounds of it, it could be your alarm, if it does the same thing when armed. How well do you know the unit? Could be a relay issue. Could try to temporarily wire it out of the equation?
If it were a buggered relay, that may explain why the bypass code wouldn't work.

[Nuty|Mike]

i had similar problems with my 20v aw ended up needing to earth the ignitor properly. try your earths ?

[cogent]

ignitor grounded straight to battery to be sure.

still no luck with this! we thought the dizzy was faulty but now we have plugged the ignitor in ( ) we have managed to get consistant spark at all 4 plugs.

wonder if a wire in the loom broke hope not.

[jondee86]

Seem to remember someone else had a similar problem, and it
turned out to be that the common injecter earth had not been bolted
down to the head (or wherever it bolts to). There was fuel to the rail
but the injectors weren't firing.

Do the plugs get wet after you have cranked it ?? Can you feel or
hear the injectors firing ??

Hey... worth a mention

Cheers... jondee86

[Adamal]

If you take the plugs out, can you shine a torch down there and see if you've got fuel in there?

[cogent]

at this stage i wonder if its a wiring fault, start signal not intact or something.
ill definantly check the fuel grounds, but it smells of fuel after cranking, and with the sparkplug out it shoots puffs of fuel out the hole.

will update thread tomorrow with my findings as im a bit busy today

btw, anyone wanna buy a silvertop AW11

[79rolla]

If you take the plugs out, can you shine a torch down there and see if you've got fuel in there?

and if you dont have a torch you can use a lighter

try engin start and see what happens...

also is there a chance you damaged AFM?