Gread Vid. I do have a question. On gm products the oil pressure sensor provides currant to the fuel pump if the relay fails so pulling the relay does not disable the pump. The next time you do this service listen to see if the pump is still running, or pull the relay and see if you can start the truck it should start once the oil pressure hits 4psi.
@Bonfield2002 interesting I was under the impression that gm designed it so that as long as the engine had at least 4 pounds oil pressure it would trigger the relay and let the fuel pump run and if it fell below that, like say if you flip the vehicle and it lost oil pressure it would break the trigger circuit for the relay and shut fuel off to help prevent fires. I know in this truck it wont start or run without the relay in place it just cranks and cranks. Def worth checking into though
@Bonfield2002 looks like you may be correct as i just went out to my 2010 silverado and started it went to pull the fuel pump relay out only to discover there isnt one in the fuse box for it. It has a spot for one but was never installed apparently. However when in did it to my company truck it died on the spot. Maybe a difference in year or the fact that ones an LT and the other a WT model?
Good Video. I'm a old man GM tech, and I've always suggested to customers to run every other tank a good injector cleaner in the tank. When I've pulled some of those top ends off for head gaskets,etc., their beautiful clean at over 100k.miles. Like you said, there's no right way or wrong way, but the key is preventive maintenance. Also , if it's a car with over 70k, I wouldn't do a whole system cleaning by in the tank method, or you'l be screw with loose debris, and your method would be better.
@markanthony404 no but i know that the manual that came with my tool from otc has a ton of part numbers for adaptors for different applications try finding the otc 7791 fitting and see if thats what you are needing. I think thats the one that connects where the fuel line normally would connect on the fuel rail providing you with the needed tapping for the tool.
@kilagon10 not of the top of my head , but the easiest way is to either hook a fuel pressure tester to it or look in a repair manual for it alot of them will run about the same psi but it never hurts to check.
Gread Vid. I do have a question. On gm products the oil pressure sensor provides currant to the fuel pump if the relay fails so pulling the relay does not disable the pump. The next time you do this service listen to see if the pump is still running, or pull the relay and see if you can start the truck it should start once the oil pressure hits 4psi.
Bonfield2002 1 month ago
@Bonfield2002 interesting I was under the impression that gm designed it so that as long as the engine had at least 4 pounds oil pressure it would trigger the relay and let the fuel pump run and if it fell below that, like say if you flip the vehicle and it lost oil pressure it would break the trigger circuit for the relay and shut fuel off to help prevent fires. I know in this truck it wont start or run without the relay in place it just cranks and cranks. Def worth checking into though
funny2man2004 1 month ago
@Bonfield2002 looks like you may be correct as i just went out to my 2010 silverado and started it went to pull the fuel pump relay out only to discover there isnt one in the fuse box for it. It has a spot for one but was never installed apparently. However when in did it to my company truck it died on the spot. Maybe a difference in year or the fact that ones an LT and the other a WT model?
funny2man2004 1 month ago
Good Video. I'm a old man GM tech, and I've always suggested to customers to run every other tank a good injector cleaner in the tank. When I've pulled some of those top ends off for head gaskets,etc., their beautiful clean at over 100k.miles. Like you said, there's no right way or wrong way, but the key is preventive maintenance. Also , if it's a car with over 70k, I wouldn't do a whole system cleaning by in the tank method, or you'l be screw with loose debris, and your method would be better.
Coolride17 4 months ago
Have you ever done this on a gm car. I have the same OTC tool but i can't get it to work because there is no hook up for that valve on the fuel rail?
markanthony404 9 months ago
@markanthony404 no but i know that the manual that came with my tool from otc has a ton of part numbers for adaptors for different applications try finding the otc 7791 fitting and see if thats what you are needing. I think thats the one that connects where the fuel line normally would connect on the fuel rail providing you with the needed tapping for the tool.
funny2man2004 9 months ago
Do you know how much PSI a 2000 Toyota Tundra V8 (4.7L) runs? If not, how can I find out? Thanks...
kilagon10 9 months ago
@kilagon10 not of the top of my head , but the easiest way is to either hook a fuel pressure tester to it or look in a repair manual for it alot of them will run about the same psi but it never hurts to check.
funny2man2004 9 months ago
its the guy off of everybody hates earl lol just kidding great vid!!!!
DatGreenBoi85 9 months ago
@DatGreenBoi85 lol i get that alot lol
funny2man2004 9 months ago
A very good job 100% practical.
MrJed234 1 year ago
Amazon has it for $109. Im thinking of ordering one.
ncmach1 1 year ago
what is the tool called?? good video man. informative
BlacktalonKevlar 1 year ago
@BlacktalonKevlar its called the fuel injector cleaner from otc part #7448 then i bought the 90 degree adaptor seperatly form otc
funny2man2004 1 year ago