Electrical problems- No Fuel

thedude · 10-27-2010, 06:30 PM

Hi guys,

I'm new to supras, so bear with me!

I just inherited a late 86 MKIII non turbo (M7whatever engine). It will run on starting fluid, so I know the ignition system works. I am not getting fuel. I unplugged the banjo bolt to the fuel rail, and didnt get any flow. I tested the leads to the pump. (under the cover by the spare tire) with the ignition on, and i get nothing. So obviously I have no power. I supplied direct 12v to the pump and heard nothing and got nothing through to the fuel rail. So obviously the pump is shot as well. Any ideas as to why it wasn't getting power? What is the most common problem you've heard of? Fuel pump relay? All fuses look ok. I couldn't see any fusable links, but I'm sure they are somewhere, so obviously I haven't tested them yet.

If anyone knows how to get ahold of some free wiring diagrams online, that would be cool. In the meantime, I'm off to drop the fuel tank...

Thanks for any and all help!

10-27-2010, 06:30 PM	#1
thedude Stock Join Date: Oct 2010 Location: louisiana Posts: 3	Electrical problems- No Fuel Hi guys, I'm new to supras, so bear with me! I just inherited a late 86 MKIII non turbo (M7whatever engine). It will run on starting fluid, so I know the ignition system works. I am not getting fuel. I unplugged the banjo bolt to the fuel rail, and didnt get any flow. I tested the leads to the pump. (under the cover by the spare tire) with the ignition on, and i get nothing. So obviously I have no power. I supplied direct 12v to the pump and heard nothing and got nothing through to the fuel rail. So obviously the pump is shot as well. Any ideas as to why it wasn't getting power? What is the most common problem you've heard of? Fuel pump relay? All fuses look ok. I couldn't see any fusable links, but I'm sure they are somewhere, so obviously I haven't tested them yet. If anyone knows how to get ahold of some free wiring diagrams online, that would be cool. In the meantime, I'm off to drop the fuel tank... Thanks for any and all help!