artur1976

Hi I just bought a 92 LS400. I did a tune up on it with new plugs and wires not the car cranks but will not run.

I know I have the wires correct. I tested the coils and one of the is not giving spark. I bought a new one and still no spark. Any Ideas on what the problem could be.

Tnx for the help.

Caoboy

iTrader: (2)

that sounds like your wires are not plugged in right. make absolute SURE they are. http://www.lexls.com/tutorials/ignition/sparkplugs.html
there yah go.

Bigkahuna

Yep also check your gounds for the eltrical firing system. Im not to familar with the LS motor and setup yet. But junk grounds can cause problomes. Or the plug could be fouled, plug wire bad, good luck

artur1976

I checked the wires and they are in proper place.

Iam still not geting a spark from one of the coils.

I replaced the coil and stil no spar.

maniek_LS

Check distributor cap - maybe it has damaged graphit/metal element which is touched by 'finger' ?
It is no so easy to access it - but I have 'photo story" how to remove it. If you need just send mail to me.

Mariusz

artur1976

Iam still not getting a spark from one of the coils. I know the coil is good.
I know the ingiters are good also. What could be the cause?

artur1976

anyone?
why would one of the coils not get spark. I tested the igniter and the coil both are good.

LexLS

I know this may be obvious but are you sure all the connectors are plugged in?

maniek_LS

Are you sure that wires are OK ? Try to replace one (which is working) fot a short test and connect to coil which have no spark - then check.

Pagong

You should reverse what you just did. But do it in steps.
Put back your stock wires one by one and see if it cranks for you.
If the car fires up with your stock wires, then you already found your problem!

artur1976

I know thw wires are in corect spots.

The coil on the right hand side looking from the fron tof the car is not giving spark.

I tested it and its not working for sure. The coil is good I moved it to the other spot and it works fine. Igniters are fine also.

AHJ

Hi

Do you have gas in the car?

(Posted with intention to help only)

Good luck

up675

Make sure that the mas airflow is hooked up and no air leaking by

forgottenx

follow the power cable and test for power until you get a signal.... from the sound of it, you have ground which means you lost the signal, your getting a signal from the ecu (the other coil is firing) so you prolly just snagged the wire so follow it and hopefully you can find the problem. good luck