Oil in Spark Plug Wells

gaitski · 03-31-2011, 12:22 AM

Alright, I was gone for a week but then got back to this project. I got everything back together, new gaskets, rtv on the 14mm bold threads, new vent hose, etc. There was a 17mm nut left over that I could not find a home for, the only 17mm that I remember was attaching the alternator. Any thoughts on where I might have missed something?

I started the truck up (my 7mge is in an 86 4Runner) and burned out some oil that had dropped down into the cylinders when I removed the old plugs. It missed a few times, but after about a block the smoke was gone and she was running smooth. I checked the gaskets and the bolts and saw no oil coming in, and all seemed right with the world.

BUT - Today I was driving out of town up a fairly steep hill going about 60, and the truck suddenly felt like I'd dropped into neutral. The engine was still going, but I was getting no forward motion from any of the gears. I pulled onto the shoulder and it died. It'll start every time now, but only run for a few seconds before dying.

Is there anything that I might have done wrong in the gasket/spark plug replacing that could account for this? I'm nearly positive that I put all of the vacuum hoses back together properly and reattached the throttle correctly, but I suppose I could have made a mistake. I'm pretty bummed after spending a good bit of money and time on this project, so any advice would be truly appreciated. Thanks!

cre · 03-31-2011, 05:37 AM

Any diagnostic codes? If not than I'd start with testing the fuel pressure and testing the AFM.

gaitski · 03-31-2011, 03:39 PM

Thanks Cre, sadly no codes. Can you recommend a good source explaining how to check that stuff? If not I can google around.

cre · 03-31-2011, 06:52 PM

Testing procedure for a of the EFI system:
http://www.cygnusx1.net/Supra/Librar...ection=FI&P=30

AFM specific section:
http://www.cygnusx1.net/Supra/Librar...ection=FI&P=94

Fuel system:
http://www.cygnusx1.net/Supra/Librar...ection=FI&P=70

Green7mgte · 03-31-2011, 08:49 PM

lawl. Did anyone mention they could use an oil drain plug gasket? if so, sorry for the repost.. wtf isnt this in the faq too?

sure is
http://www.toyota-supra.info/forums/...ark-plugs.html

I just replaced the crank case vent hose.. 45bucks from champion.
Only thing to remember is to not over tighten the alternator belt.

gaitski · 04-11-2011, 08:00 PM

Update: I haven't had time to research how to check the EFI, but I did check the codes again and found that I've got a code 43. Looks like ignition switch circuit, ignition switch, or the ECU.

Anyone come across this one and had luck with anything in particular?

Green7mgte · 04-11-2011, 10:17 PM

throttle cable?

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

http://www.toyota-supra.info/forums/...-and-43-a.html

03-31-2011, 05:37 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Any diagnostic codes? If not than I'd start with testing the fuel pressure and testing the AFM. __________________ 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 --->

03-31-2011, 06:52 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Testing procedure for a of the EFI system: http://www.cygnusx1.net/Supra/Librar...ection=FI&P=30 AFM specific section: http://www.cygnusx1.net/Supra/Librar...ection=FI&P=94 Fuel system: http://www.cygnusx1.net/Supra/Librar...ection=FI&P=70 __________________ 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 --->

03-31-2011, 08:49 PM	#5
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	lawl. Did anyone mention they could use an oil drain plug gasket? if so, sorry for the repost.. wtf isnt this in the faq too? sure is http://www.toyota-supra.info/forums/...ark-plugs.html I just replaced the crank case vent hose.. 45bucks from champion. Only thing to remember is to not over tighten the alternator belt. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : Last edited by Green7mgte; 03-31-2011 at 08:53 PM.

04-11-2011, 10:17 PM	#7
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	throttle cable? http://www.toyota-supra.info/forums/...ded-supra.html http://www.toyota-supra.info/forums/...-and-43-a.html __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : Last edited by Green7mgte; 04-11-2011 at 10:22 PM.

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03-31-2011, 12:22 AM	#1
gaitski Stock Join Date: Mar 2011 Location: Moscow, ID Posts: 14	Alright, I was gone for a week but then got back to this project. I got everything back together, new gaskets, rtv on the 14mm bold threads, new vent hose, etc. There was a 17mm nut left over that I could not find a home for, the only 17mm that I remember was attaching the alternator. Any thoughts on where I might have missed something? I started the truck up (my 7mge is in an 86 4Runner) and burned out some oil that had dropped down into the cylinders when I removed the old plugs. It missed a few times, but after about a block the smoke was gone and she was running smooth. I checked the gaskets and the bolts and saw no oil coming in, and all seemed right with the world. BUT - Today I was driving out of town up a fairly steep hill going about 60, and the truck suddenly felt like I'd dropped into neutral. The engine was still going, but I was getting no forward motion from any of the gears. I pulled onto the shoulder and it died. It'll start every time now, but only run for a few seconds before dying. Is there anything that I might have done wrong in the gasket/spark plug replacing that could account for this? I'm nearly positive that I put all of the vacuum hoses back together properly and reattached the throttle correctly, but I suppose I could have made a mistake. I'm pretty bummed after spending a good bit of money and time on this project, so any advice would be truly appreciated. Thanks!

03-31-2011, 03:39 PM	#3
gaitski Stock Join Date: Mar 2011 Location: Moscow, ID Posts: 14	Thanks Cre, sadly no codes. Can you recommend a good source explaining how to check that stuff? If not I can google around.

04-11-2011, 08:00 PM	#6
gaitski Stock Join Date: Mar 2011 Location: Moscow, ID Posts: 14	Update: I haven't had time to research how to check the EFI, but I did check the codes again and found that I've got a code 43. Looks like ignition switch circuit, ignition switch, or the ECU. Anyone come across this one and had luck with anything in particular?