02-12-2010, 08:27 PM
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#1 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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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 |
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02-16-2010, 12:15 AM
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#2 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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anyone have any ideas
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02-16-2010, 01:56 AM
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#3 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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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?
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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 --->  |
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02-17-2010, 02:07 AM
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#4 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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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?
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02-17-2010, 02:09 AM
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#5 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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and its manual trans
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02-17-2010, 02:44 AM
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#6 |
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Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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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 ---> |
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02-17-2010, 03:47 AM
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#7 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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alright thanks man ill check tomorrow
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02-17-2010, 04:15 AM
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#8 |
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3" Exhaust
Join Date: Jan 2010
Location: texas
Posts: 105
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Check to make sure the coil packs are grounded well. when i took mine apart the ground wire was half way decentagrated and the wire was bare. im sure it was causing some of the problems i was experiencing while the car was running but i wont know for sure until i get my new manifold and get her all back together
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Cars: 1995 NIssan altima with 2 year old pant on black Drag DR-8 17x7 Wheels with brand new Goodyear Eagle GT's Custom Blue Parking lights with White silverstar head lights JDM Ebay Catback Exhaust. K&N air filter. (Totaled Due To An Idiot) bone stock (for now) 1990 Supra Turbo With a brand new CT-26 Turbo And New Exhaust Manifold. Now With A Brand New Blown Head Gasket  Now driving a 99 Nissan Maxima 5spd with the passanger side bashed in from passing out at the wheel nice cars ehh?? |
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02-17-2010, 05:06 PM
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#9 |
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12psi boost
Join Date: Oct 2009
Location: Crewe, England
Posts: 356
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you took the words out of my mouth there, it's easy to overlook this earth especially if (as with mine) it's broken off the coil carrier. IIRC the coils have their own dedicated earths anyway but Toyota fitted the single wire one for a reason I guess...
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'89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! 
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02-17-2010, 07:15 PM
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#10 |
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Intake
Join Date: Feb 2010
Location: Alberta
Posts: 36
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where exactly is this ground ground on the coil suppose to be... im pretty sure i dont have on and when i bolt the coil carrier down i never have the rubbers that hold it into place so i just used some washers for now.. is that a big deal?
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