1986 1st Supra Running Poorly

dlfred · 03-17-2010, 12:45 AM

Quote:

Originally Posted by MA70-3.0GT

First off welcome and i hope you find the forum as much use as i have. I cant see the pics as im on mobile atm but if you suspect the intake may be leaking post AFM that would cause high idle and iffy power so thats first on your list. Before you buy parts though check the pas idle up valve connection under the intake pipe, its 1/2" approx rubber hose leading from the intake to a round valve on top of the pas pump then from that to the steel vac pipe that runs across the front of the motor under the water pump. .

Removed the throttle body and was able to route the KS wire down between the manifold. Should be able to connect it tomorrow. This thing is nasty up inside the mani. Now I have tough decision of cleaning it all up now or get the car running correctly to be sure there aren't any major deals with the motor, then disassembling it to clean again later.
The steel line that runs across the front of the motor, it sure looks beat up, It looks a little dented and bent. Should that be a problem? Should I assume it's bad and replace it? What do you think?

dlfred · 03-17-2010, 02:01 AM

This is the BVSV, it has nothing connected to it? Does it need this in the loop to run correctly?

cre · 03-17-2010, 03:02 AM

Yeah, run the charcoal canister's purge to the BVSV and from there to the TB. It's a flow control which prevents the charcoal canister fro providing extra fuel when the engine is below a certain temp.

dlfred · 03-17-2010, 03:30 AM

The BSVS has one of the nipples broken off. Is there a fix or just get another?

Nice info link at the bottom of your last post CRE.

Thanks folks

cre · 03-17-2010, 04:45 AM

The BVSV's are very expensive new and I don't know of an aftermarket solution. The best bet is to hit up a salvage yard and grab a couple off any Toyota's of a similar vintage. Most will fit and operate at a similar temp.

Thanks, I really need to update some things and add a couple new wiring diagrams, but you know how it goes... other priorities and all that.

dlfred · 03-19-2010, 12:17 PM

Have everything out of the way and was able to plug in the KS. Now I have to be able to check the vacuum line routing and connections. I guess I can understand the lack of clean up for a flat rate mech, but man it sure was nasty in there. What causes that much intake goo? It looked like mud/grease all though the intake plenum and box. It is now much cleaner.
There is a small 2 hole bracket with vacuum line hook ups, on the drivers side below the intake. Any ideas on what those 2 bolt holes line up too? This thing has been good to work on so far. Thanks

cre · 03-20-2010, 12:21 AM

http://www.cygnusx1.net/Supra/Librar...spx?F=1708&P=2

03-17-2010, 02:01 AM	#2
dlfred 3" Exhaust Join Date: Mar 2010 Location: Georgia Posts: 66	This is the BVSV, it has nothing connected to it? Does it need this in the loop to run correctly? Attached Thumbnails

03-17-2010, 03:02 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Yeah, run the charcoal canister's purge to the BVSV and from there to the TB. It's a flow control which prevents the charcoal canister fro providing extra fuel when the engine is below a certain temp. __________________ 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 --->

03-17-2010, 04:45 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The BVSV's are very expensive new and I don't know of an aftermarket solution. The best bet is to hit up a salvage yard and grab a couple off any Toyota's of a similar vintage. Most will fit and operate at a similar temp. Thanks, I really need to update some things and add a couple new wiring diagrams, but you know how it goes... other priorities and all that. __________________ 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 --->

03-20-2010, 12:21 AM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	http://www.cygnusx1.net/Supra/Librar...spx?F=1708&P=2 __________________ 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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03-17-2010, 03:30 AM	#4
dlfred 3" Exhaust Join Date: Mar 2010 Location: Georgia Posts: 66	The BSVS has one of the nipples broken off. Is there a fix or just get another? Nice info link at the bottom of your last post CRE. Thanks folks

03-19-2010, 12:17 PM	#6
dlfred 3" Exhaust Join Date: Mar 2010 Location: Georgia Posts: 66	Have everything out of the way and was able to plug in the KS. Now I have to be able to check the vacuum line routing and connections. I guess I can understand the lack of clean up for a flat rate mech, but man it sure was nasty in there. What causes that much intake goo? It looked like mud/grease all though the intake plenum and box. It is now much cleaner. There is a small 2 hole bracket with vacuum line hook ups, on the drivers side below the intake. Any ideas on what those 2 bolt holes line up too? This thing has been good to work on so far. Thanks