Outer Limits 4x4 Board

hello
i got a problem with a hilux with no spark it is a 4y 88 model single cab
i have check the wiring diagram and followed it and wired from stock from toyota and i have no power coming out of the coil. I have check the coil on a other car and no problem there i have got power going to the coil but nothing coming out of the coil. What could this problem be

cheers
tim

If the coil works then the next logical step is the distributor, since the distributor tells the coil when to fire.

Check the rotor button, cap and points in the distributor.

Cheers

ok sorry i sould have said that i have check that to the rotor button and cap are fine have check them on an other running hilux and the points are fine have set the gap on them and the gap was fine. So i don't know
cheers
tim

Silly sounding question but I came across this outside of Alice Springs one time.

Does the rotor button rotate when the engine is cranked.

These people had a broken distributor shaft.

Also does the coil to distributor hi tension lead have continuity and if so is it under say 5 K ohm?

Cheers

Also check that power remains on the coil once the engine has started.

The easiest way is to run 12 volts directly from the battery to the coil, if the motor runs like this then you probably have an ignition switch problem.

Cheers

Do you have a ballast resistor wired to the coil?

yes the rotor button spins when the motor turns over
how do you check the hi tension lead
also the engine won't fire at all even with the coil hard wired with straight power
yes the coil has a ballest resistor wired to it and it runs power through it

cheers
tim

hows the - link from the battery to the motor ?

I am having the sam issue with my cruiser at the moment I have replaced absoloutly everything.

assuming the coil works, check your wiring going to the coil, check the resistance though the coil lead. turn the engine over with cap off and see if there is spark. if no spark check wiring from coil to dizzy. if spark the coil and dizzy are working fine it is from dizzy shaft onwards. check to see if there is continuity between the bottom of dizzy cap coil connection and top of dizzy cap coil connection, ensuring the carbon plunger is still there. again check resistance of coil lead. few to many bourbons, hope this helps.

I have replaced the following.

plugs
leads
dizzy cap
rotor button
coil
resister

We made a new earth for the coil and pulled the dizzy its self out, and the stalk if in perfect nick

But i am confused as why i still have no spark.

ok i have replace the same thing and done the same thing but no spark i am getting power into the coil but nothing coming out there is nothing wrong with the coil have had it running on other hilux and there is no spark anywhere i have done all the thing that all of you have said and i just can understand what going on. is there any why if hard wiring the coil to the dizzy to see if it runs that way.
cheers
tim

If possible replace the coil to dissy lead with one of the spark plug leads and check for spark, this will at least tell if the coil lead is functioning.

done that and no spark
cheers
tim

OK I will put the thinking cap on and try find a reason tonight.

Cheers

was just thinking then what would happen if the new points were set at the wrong gap maybe i was told the wrong gap just double checking whats the gap ment to be set on the hilux
cheers
tim

try and start the engine with cap off and check to see if there is spark at the points and if they are breaking contact.

tuff_surf wrote:was just thinking then what would happen if the new points were set at the wrong gap maybe i was told the wrong gap just double checking whats the gap ment to be set on the hilux
cheers
tim

If the gap is wrong then "No sparky"

Definately check taht.

does anybody knows what the gap needs to be
cheers
tim

workshop manual will tell you the exact gap but aim for around 0.019" (0.5mm) gap or around that. If you dont have a feeler gauge and are a smoker, its around the thickness of the cardboard on a cig packet. If you don't smoke this is a good reason to start.

ok thanks i will try that i got feeler gauges so all good
cheers
tim

So is it fixed yet?

Cheers

Well now after i have set the new gap from around .8mm to about .5mm i have a spark. I was thinking that .8 was to big. But n-e-way So it running but not really well now it is back firing and missing but thanks it starts now i think its just timing now. I run out of light so will have a look tomorrow. So thanks everybody for the help and just goes to show don't take people word that work at these auto places on setting gap and things like that. Thanks again all of yous
cheers
tim

anyone know the need gap for a 3f????

Rookie wrote:anyone know the need gap for a 3f????

Same mate, about 0.5mm.

thanks will give it a shot in the morning

ok so the tag on the motor says 0.8 mm so i re gapped my plugs and still nothing.

is there anything else it could be or have a bought a dud coil????

hey guys instead or stuffing around with points i just converted my 86 hilux 4y motor to electronic ignition
using a pertronix kit from a guy in melbourne

www.pertronix.com.au

PHONE (03) 9761 1110

guy was really helpful helped me over the phone. done the conversion in about 20 mins

getting about 40-50 kms more out of a tank of fuel its idling beautiful

and it was so damned easy


cheers shane

Rookie wrote:ok so the tag on the motor says 0.8 mm so i re gapped my plugs and still nothing.

is there anything else it could be or have a bought a dud coil????

So you've gapped your plugs to 0.8mm but what about the points gap?

replaced the points and condenser yesterday and gapped the points at 0.5mm still nothing