7mgte no spark

supra.7mgte · 02-12-2010, 08:27 PM

so i bought a supra a while ago with the engine out and it had a bhg so i replaced that and the head. So i finally got the motor and tranny in and the wiring that i know of and can see done up. when to go start it i had no power at the coil. traced that back to an unplug ignition wire. went to go crank again and still have no spark. so i went to the toyota service manual and went for the no spark condition and started doing testing and found the ignitor to test bad. Replaced the ignitor and i still have no spark.

I am at a lost of what it could be. Any ideas? I know there are guys out there that know alot more about the supras then i do and could prob give me hints on where to start.

By the way its a 1990 supra with a 7mgte. the cylinder head is off a jdm 7mgte and its not running the egr system and it has arp head studs along with the third verison of toyotas gasket

thanks in advance

supra.7mgte · 02-16-2010, 12:15 AM

anyone have any ideas

cre · 02-16-2010, 01:56 AM

No error codes? Manual or automatic transmission? Is there power at the ECU? Does the check engine light up when the key is in the "ON" position but the car is still off? Are the ground wires which connect to the head on the passenger side and the intake manifold on the driver's side all clean and securely fastened?

supra.7mgte · 02-17-2010, 02:07 AM

havent checked for codes yet. ground on the passenger side is good and didnt know there is suppose to be one on the intake... where on the intake does it bolt to and where on the car?

supra.7mgte · 02-17-2010, 02:09 AM

and its manual trans

cre · 02-17-2010, 02:44 AM

The other ground I mentioned consists of two eyelets (4 wires, IIRC) and they connect to the bottom of the lower intake plenum (driver's side of the head).

Check for codes, it'll help see if there are any power supply issues at the ECU.

02-12-2010, 08:27 PM	#1
supra.7mgte Intake Join Date: Feb 2010 Location: Alberta Posts: 36	7mgte no spark so i bought a supra a while ago with the engine out and it had a bhg so i replaced that and the head. So i finally got the motor and tranny in and the wiring that i know of and can see done up. when to go start it i had no power at the coil. traced that back to an unplug ignition wire. went to go crank again and still have no spark. so i went to the toyota service manual and went for the no spark condition and started doing testing and found the ignitor to test bad. Replaced the ignitor and i still have no spark. I am at a lost of what it could be. Any ideas? I know there are guys out there that know alot more about the supras then i do and could prob give me hints on where to start. By the way its a 1990 supra with a 7mgte. the cylinder head is off a jdm 7mgte and its not running the egr system and it has arp head studs along with the third verison of toyotas gasket thanks in advance

02-16-2010, 01:56 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	No error codes? Manual or automatic transmission? Is there power at the ECU? Does the check engine light up when the key is in the "ON" position but the car is still off? Are the ground wires which connect to the head on the passenger side and the intake manifold on the driver's side all clean and securely fastened? __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

02-17-2010, 02:44 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The other ground I mentioned consists of two eyelets (4 wires, IIRC) and they connect to the bottom of the lower intake plenum (driver's side of the head). Check for codes, it'll help see if there are any power supply issues at the ECU. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
No spark mystery on 7mgte	jcgrant4	MKIII Supra	9	08-19-2009 06:21 PM
No spark issues	DDBT	MKII Supra	2	01-06-2009 07:08 AM
7mgte swap no spark	supra4life1386	MKIII Supra	5	11-27-2008 07:57 PM
NGK Spark Plugs	91 Supra	MKIII Supra	5	08-07-2007 03:52 AM

02-16-2010, 12:15 AM	#2
supra.7mgte Intake Join Date: Feb 2010 Location: Alberta Posts: 36	anyone have any ideas

02-17-2010, 02:07 AM	#4
supra.7mgte Intake Join Date: Feb 2010 Location: Alberta Posts: 36	havent checked for codes yet. ground on the passenger side is good and didnt know there is suppose to be one on the intake... where on the intake does it bolt to and where on the car?

02-17-2010, 02:09 AM	#5
supra.7mgte Intake Join Date: Feb 2010 Location: Alberta Posts: 36	and its manual trans