No spark in hilux

Post by **tuff_surf** » Mon Oct 27, 2008 3:41 pm

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

Post by **Struth** » Mon Oct 27, 2008 3:44 pm

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

Post by **tuff_surf** » Mon Oct 27, 2008 6:26 pm

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

Post by **Struth** » Mon Oct 27, 2008 8:58 pm

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

Post by **Struth** » Tue Oct 28, 2008 7:19 am

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

Post by **RAY185** » Tue Oct 28, 2008 12:22 pm

Do you have a ballast resistor wired to the coil?

Post by **tuff_surf** » Tue Oct 28, 2008 5:27 pm

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

Post by **spazbot** » Tue Oct 28, 2008 5:47 pm

hows the - link from the battery to the motor ?

Post by **Rookie** » Tue Oct 28, 2008 7:42 pm

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

Post by **simkell** » Tue Oct 28, 2008 9:43 pm

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.

Post by **Rookie** » Wed Oct 29, 2008 9:36 am

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.

Post by **tuff_surf** » Wed Oct 29, 2008 11:36 am

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

Post by **Struth** » Wed Oct 29, 2008 12:48 pm

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.

Post by **tuff_surf** » Wed Oct 29, 2008 1:29 pm

done that and no spark
cheers
tim

Post by **Struth** » Wed Oct 29, 2008 2:31 pm

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

Cheers

Post by **tuff_surf** » Wed Oct 29, 2008 3:56 pm

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

Post by **simkell** » Wed Oct 29, 2008 5:04 pm

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.

Post by **Struth** » Wed Oct 29, 2008 8:16 pm

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.

Post by **tuff_surf** » Thu Oct 30, 2008 9:47 am

does anybody knows what the gap needs to be
cheers
tim

Post by **RAY185** » Thu Oct 30, 2008 10:46 am

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.

Post by **tuff_surf** » Thu Oct 30, 2008 2:05 pm

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

Post by **Struth** » Thu Oct 30, 2008 3:54 pm

So is it fixed yet?

Cheers

Post by **tuff_surf** » Thu Oct 30, 2008 9:38 pm

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

Post by **Rookie** » Thu Oct 30, 2008 9:42 pm

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

Post by **RAY185** » Thu Oct 30, 2008 9:59 pm

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

Same mate, about 0.5mm.

Post by **Rookie** » Thu Oct 30, 2008 10:33 pm

thanks will give it a shot in the morning

Post by **Rookie** » Fri Oct 31, 2008 11:18 pm

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????

Post by **TUF-35T** » Sun Nov 02, 2008 7:00 pm

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

Post by **RAY185** » Mon Nov 03, 2008 8:42 am

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?

Post by **Rookie** » Mon Nov 03, 2008 9:39 am

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

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