FIring order for 84 supra

Frankie J · 01-10-2010, 05:12 AM

I am a new user and am also new to cars. I know how to change the plugs and wires but I don't know the firing order or how the cylinders are numbered. Also I was told that the fuel pump is prob bad. Is there a way I can test that? If so, please explain how. Need help and any would be greatly appreciated!!

Green7mgte · 01-12-2010, 12:19 AM

Quote:

Originally Posted by Frankie J

Also I was told that the fuel pump is prob bad. Is there a way I can test that? If so, please explain how.

when you turn the car to start, do you hear the Fuel pump click on?
Firing order
http://autorepair.about.com/library/...l-fo-12832.htm

http://www.toyota-supra.info/forums/...-88-turbo.html

Suprademon · 01-13-2010, 10:50 PM

84 has an internal fuel pump. A quick check is to remove your air filter. The metal box behind it connected to the tube to your intake is air flow meter. There is a flapper inside that you can move easily. With the ignition on, stick something in the flap to hold it open. This will cause the fuel pump to engage and you should be able to hear it.

There is also a test lead there that can be jumpered to engage the fuel pump.

This is the link to the Technical Service Repair Manual (TSRM) for the 1986 MKII. Your 84 is not significantly different. It has a wealth of info and detailed instructions for testing.

http://www.cygnusx1.net/Supra/Library/TSRM/MK2/

Green7mgte · 01-13-2010, 11:09 PM

thread in the mk3 section were parts of it discuss a bad fuel pump possibility.

Quote:

Originally Posted by cre

Tyr placing a jumper across FP and B+ in the diagnostic box in the engine bay and then try to start. This bypasses a couple relays and powers the fuel pump directly... it'll help eliminate a bad pump as a possibility.

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

Engine error code page from TSRM
http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

cre · 01-14-2010, 05:26 AM

The MKII's fuel pump check connector, unlike the MKIII, doesn't bypass the ignition switch, EFI fuse, Main EFI relay or the circuit opening relay. These nees to be in known working order and the ignition set to "ON" to use with the FP check connector or the AFM FC switch for a diagnosis.

Do keep in mind that a bad fuel pump may power up and even provide "proper pressure" at very low loads. Checking fuel pressure at high idle and light throttle is a better indication, IMO.

Here's the TSRM's chapter on diagnosing and servicing the fuel pump:
http://www.cygnusx1.net/Supra/Librar...ection=FI&P=44

Green7mgte · 01-14-2010, 05:56 AM

and that is why is stay in the mk3 section..

cre · 01-14-2010, 06:50 AM

There's just soooo much to learn eh? Damn I need some other hobbies... things to fill out my day...

Green7mgte · 01-14-2010, 09:35 PM

Quote:

Originally Posted by cre

There's just soooo much to learn eh? Damn I need some other hobbies... things to fill out my day...

that and I dont have one.. hands on experience helps. I can read all I like but if I cant get out there and do it.. its all just hypothetical.

01-10-2010, 05:12 AM	#1
Frankie J Stock Join Date: Jan 2010 Location: Las Vegas, NV Posts: 2	FIring order for 84 supra I am a new user and am also new to cars. I know how to change the plugs and wires but I don't know the firing order or how the cylinders are numbered. Also I was told that the fuel pump is prob bad. Is there a way I can test that? If so, please explain how. Need help and any would be greatly appreciated!!

01-13-2010, 10:50 PM	#3
Suprademon Stock Join Date: Oct 2009 Location: Oklahoma Posts: 14	84 has an internal fuel pump. A quick check is to remove your air filter. The metal box behind it connected to the tube to your intake is air flow meter. There is a flapper inside that you can move easily. With the ignition on, stick something in the flap to hold it open. This will cause the fuel pump to engage and you should be able to hear it. There is also a test lead there that can be jumpered to engage the fuel pump. This is the link to the Technical Service Repair Manual (TSRM) for the 1986 MKII. Your 84 is not significantly different. It has a wealth of info and detailed instructions for testing. http://www.cygnusx1.net/Supra/Library/TSRM/MK2/ __________________

01-14-2010, 05:26 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The MKII's fuel pump check connector, unlike the MKIII, doesn't bypass the ignition switch, EFI fuse, Main EFI relay or the circuit opening relay. These nees to be in known working order and the ignition set to "ON" to use with the FP check connector or the AFM FC switch for a diagnosis. Do keep in mind that a bad fuel pump may power up and even provide "proper pressure" at very low loads. Checking fuel pressure at high idle and light throttle is a better indication, IMO. Here's the TSRM's chapter on diagnosing and servicing the fuel pump: http://www.cygnusx1.net/Supra/Librar...ection=FI&P=44 __________________ 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 --->

01-14-2010, 05:56 AM	#6
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	and that is why is stay in the mk3 section.. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

01-14-2010, 06:50 AM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	There's just soooo much to learn eh? Damn I need some other hobbies... things to fill out my day... __________________ 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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