My mk3 wont start please help - Intermittent ignition problems

[1_BAD_MK3]

I HAVE A 89 SUPRA WITH A 7MGTE TURBO THE CARS RUNS GREAT BUT NOW IT WONT START EVERYTHING IS FINE BUT IT SEEMS THAT ITS NOT THROWING ANY SPARK THE CAR WAS RUNING GREAT BUT I RAN OUT OF GAS I WHENT TO GET SOME GAS AND NOW IT WONT START I NEED HELP

[cre]

Do NOT post in all caps! It's rude... the accepting internet equivalent of SCREAMING.


How do you know you're not getting any spark?

The fuel system can take a minute to prime. If it doesn't seem to be priming from cranking try inserting a jumper (a piece or wire or a paper clip will do) in the connector for FP and the other end in the connector for B+ in the Diagnostic box. It's just above the engine bay fuse box and is labeled. There is a chart in the lid of it showing which connector is which. Jumper those two, wait 30 seconds to a minute and try cranking the ignition again.

Do NOT leave the jumper in place for more than a minute or two at a time; You don't want the battery to get drained needlessly and you don't want to overwork the pump if the problem lies elsewhere.

[1_BAD_MK3]

i cheked every thing i took out a spark plug wire and cranked it and no spark

ill try what u said

[1_BAD_MK3]

my 89 supra starts sometimes then it doesnt it wont throw any spark what is it

help please

[cre]

Please do not create multiple threads for the same problem. It makes it harder for us to help you as it is harder for us to know what you have tried and what precisely is going on with the car.

I'll merge this thread with your other one.


Meanwhile check the ground wire running to the coilpacks for deterioration and corrosion. Check the ground wires which connect to the head on each side. Check for stored diagnostic codes. I'd also go and replace the EFI fuse, even if it looks good.

[1_BAD_MK3]

i did everything in my car but it wont start could it be the distributor or the coils cause it has no spark oh yeah i checked my spark plugs and the all have oil could it be that

[Green7mgte]

you said no spark? your sparkplugs all have oil in them?
i did a recount of your other topic posts..
do you have no spark at wich of the fallowing locations
Plugs.. coil.. points.. distributor.. ignition coil

read this. then let us know
http://www.nls.net/mp/volks/htm/spark.htm

just a basic spark test at various locations

[CanadianBak'inSupra]

http://www.toyota-supra.info/forums/...-problems.html

dude u already got a thread about this...
your problems dont get solved when people have to tell u not to make multiple threads....

[Green7mgte]

if an engine cranks but will not start, one of the first things you should check is spark. No spark at any of the plugs usually indicates an ignition problem that requires further investigation (a bad coil, ignition module, distributor pickup, crank sensor, etc.).

Fouling can occur if fuel or oil deposits build upon the plug electrodes.

Worn valve guide seals and guides can allow oil to be sucked down the guides and into the combustion chamber. A heavy buildup of thick black deposits on the plug and intake valve
would indicate such a problem. Worn or broken rings, or damage to the cylinder wall can also allow oil to enter the combustion chamber and form ash deposits on the plugs.
http://www.aa1car.com/library/sprkplg2.htm
brief spark plug lesson.. do you have any of those symptoms?
next time merge them in the Original Thread!
also do a google search with NO spark AT and click on the suggested sites. preform those tests, if still nothing come back with more info on what you did. what your car is doing. in the same thread. don't start a new one. =) let us know

[cre]

You should keep posts about a problem in the same thread. Not doing so makes it harder for those trying to help know what's gong on and what has been tried.

I merge this with your other thread... I'd appreciate not having to do it again.