No Fuel Pressure

Wong Wei · 05-12-2010, 12:33 AM

I'm sure someone has posted this already, maybe not? I'm new to the forum so forgive me. ............. went to start the Supra the other day and no fuel pressure, I replaced the Circuit Opening Relay and still no Fuel Pressure, checked to make sure the Fuel Pressure relay is get'n power and it is. checked the fuel pump and its still working. I will replace the Fuel Pressure relay tomorrow in hopes that is the fix I need..... In the mean time any one else ever encounter this problem if so any help is much appreciated...........1989 Supra 7M-GTE

Wong Wei · 05-12-2010, 01:29 AM

well I seemed to have found the problem, I sprayed the cam sensor off and it started right up, seems there was some oil on the sensor and it didn't detect any rotation.

batmmannn · 05-15-2010, 12:51 AM

Where is the cam sensor? Thanks

btwilson86 · 05-15-2010, 07:57 AM

It's only on 7MGTE's, and it takes the place of the distributor. Since your supra's are N/A's, you won't have one

batmmannn · 05-15-2010, 05:55 PM

I have drained 7 gallons of 6 year old gas into two gas cans. Now what do I do with it? Safe way of disposal? What do you guys do with it?

Also I think I am getting no fuel to my engine. Drained the gas to see if that was it and possibly my plugs are fouled though I did check the number one and it sparked.

The gas I drained looked not to bad or dirty but certainly yellowed or tinged so I am hoping fresh gas and 4 new plugs might bring it back to life. It died suddenly during a test drive after 7 years of sitting. Timing belt is still working and I have spark so what can it be? Don't think Fuel filter could be clogged. Is there a place to disconnect the fuel line at the motor to see if it is pumping gas?

After cranking 20 seconds with pedal on the floor I pulled the #1 plug and it looked dry. It should have been wet.

I have a NA stock 86.5 5speed any suggestions would be appreciated. Thanks so much.

btwilson86 · 05-16-2010, 02:33 AM

You can check to see if you're getting fuel to the fuel rail by putting a jumper wire in the diagnostic box between "FP" and "B+". That should cycle your fuel pump on constantly, if all the wiring for it is intact and there are no bad relays or fuses

batmmannn · 05-16-2010, 03:03 AM

Yeah I am going to try that tomorrow Thanks for the help. Cre has been taking his personal time to help me as well and I am very grateful to all of you. Thanks Guys! Scott

05-15-2010, 12:51 AM	#3
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Cam sensor? Where is the cam sensor? Thanks __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile!

05-15-2010, 07:57 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	It's only on 7MGTE's, and it takes the place of the distributor. Since your supra's are N/A's, you won't have one __________________ 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

05-15-2010, 05:55 PM	#5
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Old gas I have drained 7 gallons of 6 year old gas into two gas cans. Now what do I do with it? Safe way of disposal? What do you guys do with it? Also I think I am getting no fuel to my engine. Drained the gas to see if that was it and possibly my plugs are fouled though I did check the number one and it sparked. The gas I drained looked not to bad or dirty but certainly yellowed or tinged so I am hoping fresh gas and 4 new plugs might bring it back to life. It died suddenly during a test drive after 7 years of sitting. Timing belt is still working and I have spark so what can it be? Don't think Fuel filter could be clogged. Is there a place to disconnect the fuel line at the motor to see if it is pumping gas? After cranking 20 seconds with pedal on the floor I pulled the #1 plug and it looked dry. It should have been wet. I have a NA stock 86.5 5speed any suggestions would be appreciated. Thanks so much. __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile!

05-16-2010, 02:33 AM	#6
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	You can check to see if you're getting fuel to the fuel rail by putting a jumper wire in the diagnostic box between "FP" and "B+". That should cycle your fuel pump on constantly, if all the wiring for it is intact and there are no bad relays or fuses __________________ 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

05-16-2010, 03:03 AM	#7
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Thanks Yeah I am going to try that tomorrow Thanks for the help. Cre has been taking his personal time to help me as well and I am very grateful to all of you. Thanks Guys! Scott __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile!

05-12-2010, 12:33 AM	#1
Wong Wei Stock Join Date: May 2010 Location: Scottsdale Posts: 2	No Fuel Pressure I'm sure someone has posted this already, maybe not? I'm new to the forum so forgive me. ............. went to start the Supra the other day and no fuel pressure, I replaced the Circuit Opening Relay and still no Fuel Pressure, checked to make sure the Fuel Pressure relay is get'n power and it is. checked the fuel pump and its still working. I will replace the Fuel Pressure relay tomorrow in hopes that is the fix I need..... In the mean time any one else ever encounter this problem if so any help is much appreciated...........1989 Supra 7M-GTE

05-12-2010, 01:29 AM	#2
Wong Wei Stock Join Date: May 2010 Location: Scottsdale Posts: 2	well I seemed to have found the problem, I sprayed the cam sensor off and it started right up, seems there was some oil on the sensor and it didn't detect any rotation.

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