changed turbo and now the car wont start

venomstreetmachine · 06-25-2009, 03:20 AM

I have been working on my 90 supra Turbo for a year now.

I changed the head and gasket ! decided to upgrade the exhaust manifold and turbo.
I also installed a fuel pressure regulator....
I need help !
Got everything mounted the car turns over but wont start !

1, the intercooler piping gets really hot just cranking the engine over !
2,Fuel Pressure only builds up when cranking
3,The car will start half arsed when I spray starter fluid pops and backfires!

Im dying to get this car going can someone help me or give me a hint

mirage83 · 06-25-2009, 11:34 AM

Any codes? Have you checked the mechanical timing as well as your CPS alignment?

venomstreetmachine · 06-25-2009, 01:51 PM

Yep, Timing is spot on ! But I will check it again !
I have great compression !

Would you happen to know what the fuel Pressure should be? and if the EFI system should pressure up when the ignition is turned on? or when I turn it over?
Thanks for any help !

mirage83 · 06-25-2009, 03:34 PM

Fuel pressure for the GTE is supposed to be 33-40 lbs with the key in the ON position without the engine running. There are different procedures of checking the fuel pressure at idle, here's a link...

http://www.cygnusx1.net/Supra/Librar...aspx?S=FI&P=73

venomstreetmachine · 06-25-2009, 04:58 PM

I appreciate the help ! But whats happening is... when I turn on the key nothing happens, the dash lights up but no fuel pressure ! I only get pressure when i am cranking.

mirage83 · 06-25-2009, 05:56 PM

Have you checked the EFI fuse? Is the fuel pump getting power?

btwilson86 · 06-30-2009, 03:21 AM

Fuel pump does NOT turn on when the key is just in the on position. It only starts pumping once the engine starts turning over.

It sounds alot like a timing issue... you said that the timing is spot on. Are you 100% positive that the cps was placed on the compression stroke and not on the exhaust stroke?

Kevin · 06-30-2009, 04:09 AM

hey sorry to kinda hijack but how would u know if its on the compression or combustion stroke?

jkendall86 · 06-30-2009, 06:46 AM

check te cps...cam position sensor...take off the 3 screws on the side with the engine at Top Dead Center and check to see if the cam is in the right spot...check this out,

http://www.cygnusx1.net/Supra/Librar...aspx?S=EM&P=22

mirage83 · 06-30-2009, 03:07 PM

Quote:

Originally Posted by btwilson86

Fuel pump does NOT turn on when the key is just in the on position. It only starts pumping once the engine starts turning over.

You've got to jump a couple of wires to do the ON position test per the TSRM... +B and Fp iirc.

06-25-2009, 03:20 AM	#1
venomstreetmachine Banned Join Date: Jun 2009 Location: Abilene Tx Posts: 10	changed turbo and now the car wont start I have been working on my 90 supra Turbo for a year now. I changed the head and gasket ! decided to upgrade the exhaust manifold and turbo. I also installed a fuel pressure regulator.... I need help ! Got everything mounted the car turns over but wont start ! 1, the intercooler piping gets really hot just cranking the engine over ! 2,Fuel Pressure only builds up when cranking 3,The car will start half arsed when I spray starter fluid pops and backfires! Im dying to get this car going can someone help me or give me a hint

06-30-2009, 03:21 AM	#7
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Fuel pump does NOT turn on when the key is just in the on position. It only starts pumping once the engine starts turning over. It sounds alot like a timing issue... you said that the timing is spot on. Are you 100% positive that the cps was placed on the compression stroke and not on the exhaust stroke? __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

06-30-2009, 06:46 AM	#9
jkendall86 Stock Join Date: Feb 2005 Location: Oregon Posts: 7	cps check te cps...cam position sensor...take off the 3 screws on the side with the engine at Top Dead Center and check to see if the cam is in the right spot...check this out, http://www.cygnusx1.net/Supra/Librar...aspx?S=EM&P=22

06-25-2009, 11:34 AM	#2
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Any codes? Have you checked the mechanical timing as well as your CPS alignment?

06-25-2009, 01:51 PM	#3
venomstreetmachine Banned Join Date: Jun 2009 Location: Abilene Tx Posts: 10	Yep, Timing is spot on ! But I will check it again ! I have great compression ! Would you happen to know what the fuel Pressure should be? and if the EFI system should pressure up when the ignition is turned on? or when I turn it over? Thanks for any help !

06-25-2009, 03:34 PM	#4
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Fuel pressure for the GTE is supposed to be 33-40 lbs with the key in the ON position without the engine running. There are different procedures of checking the fuel pressure at idle, here's a link... http://www.cygnusx1.net/Supra/Librar...aspx?S=FI&P=73

06-25-2009, 04:58 PM	#5
venomstreetmachine Banned Join Date: Jun 2009 Location: Abilene Tx Posts: 10	I appreciate the help ! But whats happening is... when I turn on the key nothing happens, the dash lights up but no fuel pressure ! I only get pressure when i am cranking.

06-25-2009, 05:56 PM	#6
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Have you checked the EFI fuse? Is the fuel pump getting power?

06-30-2009, 04:09 AM	#8
Kevin 3" Exhaust Join Date: Apr 2009 Location: Ontario, Canada Posts: 194	hey sorry to kinda hijack but how would u know if its on the compression or combustion stroke?