20v starting then dieing

[adamaw11]

definately getting fuel? not flooded or anything? no possibility of water in the tank?
got a way of making the fuel pump run constantly for trouble-shooting purposes?

[sideshow]

did u change cam belt as you have spark but maybe not firing at right time

is ignitor earthed maybe there is a 20v virus goin round as there have been afew 20vs with problems

i fixed a 4agze today it had a fukt ecu leaking capacitors

so hope it didnt stuff too much as im tryin to repair the ecu

[skiddz]

timing marks all line up, ignitor should be earthed as the bracket is screwed into the firewall, i shall open up the ecu and see if things have leaked

i definitely have fuel but if i pull the plugs outta the cylinders they are soaked in fuel (probably because it isnt igniting) water in the tank is a possibility but a slim one at that, i may drain the fuel late next week when the pulsar runs out again and throw some 98 in there

this is ghey! why doesnt it work!

[sideshow]

is this a 2nd hand engine that has been siting for awhile at an importers

is this a fresh conversion

or has the car run before with this motor


remove coil lead test for spark if theres spark then remove no1 lead test for spark
maybe even test 2 3 and 4 leads too

if theres no spark test signals into ingitor and test for signals out to coil

if you have injector pulse then your dizzy is prob ok

maybe yr ignitor is fukt

test for 12v at yr ignitor and coil when cranking and running

if its recently been wired up maybe they fukt up

its easy to fuk them up if you dont know what to do

does the car have an alarm

because the car is running then stopping u have to test what is stopping

if its spark then hook up a timing light does the light stop flashing before the engine stops

can u borrow an ignitor to test

they are pretty basic system you should be able to test things and see whats to blame in an hour or so

[skiddz]

i have tested coil -> dizzy spark = it sparks
dizzy -> plug = it sparks,

coil has 12v (first thing i tested) as does ignitor
wiring is fine AFIAK cos it did run(very badly at that) and then all of a sudden stopped, i will replace rotor button and see if that is the source of the problems might see if i can borrow and ignitor and see if its fubar'd

[o_man_ra23]

Have you tried blowing some carby cleaner down the throat of it and open to full throttle, but cut power to the pump so no fuel and crank??... should clear everything out of the combustion chambers, then you can hook the pump back up and try again. Dont run the injectors for too long without the pump going though.

Cheers, Owen

[skiddz]

new dizzy cap new rotor button, nothing..... i am getting a very strong spark from the coil (i know cos it zapped me) but nothing from the dizzy to the plug, leads? or is somthing else fucked?

[TA-022]

engine earth? sounds silly but coil is earthed to body and dissy to the block (but youve prob checked.

so earthing a plug in a lead off the dissy gets no spark?

does the dissy require ecu signal to fire? if so that might be a possibility...

new plugs? leads? resistence test the leads ? within speck.

sorry if ive repeated stuff here.

[skiddz]

ive resistance tested leads all was good, i think, (im not quite sure how to tell, if multimeter is set on 20k ohm what should the reading be assuming the leads should have less than 25k ohm resistance)

ill check engine earth, cos a little bit of me thinks that i havent earthed it properly......

oh dont worry repeating things is the only way i learn, people have to explain things numerous times before i fully understand

[o_man_ra23]

spark plugs... there, repeated... replace them for the sake of it, they arent expensive and spares always come in handy. Meter should read Open or OL or 000 or similar if set to 20k and the leads have over that. Otherwise it will give a reading in kOhms from 0 to 20.

Dodgy engine earth is a possibility, do you have an earthing point to the head separate to the block??

Cheers, Owen

[TA-022]

whip the multimeter out. black lead to battery neg- and with the red prob all different parts of the motor ... in particular around the dissy. I hooked to bumper mount below battery and then to engine mount for test running. final install will have another earth to the head on drivers side.

[sideshow]

if yr gettin spark to dizzy but not out and u have changed cap and rotor

then yr rotor coul dbe out of alignment
which means yr cam timing is out

are you sure there is no spark from any of the 4 leads
test them all


its very strange what yr explaining

if yr gettin spark there is no dodgey earth

if there was no earth u would not get spark
if engine had no earth u would get no crank

all i can say is start a coil and work topwards the plugs

make sure yr getting 12v at coil when ign is on and also when cranking

maube when cranking yr loosing voltage

have seen it done before guy didnt know how ot wire it properly and when engine started voltage to coil and injetors halved

cant be to hard to find its prob just something stupid

tow it down here and ill fix it for you hehehehee

[skiddz]

i shall check voltage when cranking.

ive got new dizzy cap new rotor button, leads are ok, coil is firing when i put near the head and the spark plugs seem to only fire once then nothing, but a couple of days ago they would fire, but be weak as, this is fucked up

[TA-022]

if its any consilation mine looks like a weak arse spark but seems to run fine when going?

only sparking once then no more sounds like voltage to me... ie the coil builds up charge fires once then there isnt enough power to recharge the coil to fire again.

if its this then you'd look at coil / battery and dissy signal while cranking.

[sideshow]

if yr loosing spark i woul dgo for faulty ignitor
or bad earth on ignitor