What causes excessive vacuum in fuel tank?
Fuel pumps feed fuel to engine carburetors by pumping it from fuel tanks. Removing fuel causes a vacuum that, if not released or maintained at the correct pressure, becomes too great, causes pump failure and starves the carburetor of fuel. As a temporary fix, remove and immediately refit the cap to release the vacuum.
Why is my fuel tank collapsing on my GMC Sierra?
I’m also having this problem with my 2000 GMC Sierra SL c2500 5.7. It creates a vacuum and collapses the fuel tank. Im on my third fuel tank but didn’t realize at first a vacuum was crushing it. Any ideas? It seems the more I read, the more possibilities that could cause it but its getting expensive with the tanks and pumps.
What to do if your fuel tank is not venting?
If you remove the vent line from the canister, you should be able to blow through the line to the tank. Take the gas cap off first. If that line is blocked, you’ve found where the problem is.
Where does the gas line go in a GM Truck?
The vent line continues into the engine compartment along with the rear brake line. The vent line goes to vapor canister mounted near the radiator on the drivers side. If you remove the vent line from the canister, you should be able to blow through the line to the tank. Take the gas cap off first.
How to troubleshoot a Mercedes Benz fuel pump problem?
Troubleshooting a bad fuel pump problem on a Mercedes-Benz is easy. This is a job where you need to be extremely careful because you will work near fuel and there is always the risk of fire. It is recommended that you empty the tank or have the fuel tank near empty when you replace the fuel pump.
I’m also having this problem with my 2000 GMC Sierra SL c2500 5.7. It creates a vacuum and collapses the fuel tank. Im on my third fuel tank but didn’t realize at first a vacuum was crushing it. Any ideas? It seems the more I read, the more possibilities that could cause it but its getting expensive with the tanks and pumps.
Is there a problem with the fuel tank on a 300sdl?
Check out Kent’s YouTube video on what he found was the problem with a persistent power loss problem on a 300SDL. If the problem is slight you may be able to drain the tank and flush it with clean diesel fuel. If the build up is bad enough you will have to remove the fuel tank and have it cleaned or replace it with a good used fuel tank.
What should I do if my Mercedes fuel pressure is zero?
If your Mercedes doesn’t start, check the fuel pressure. If you are getting zero reading, you either have an electrical problem or a bad fuel pump. If the check engine light is on, consider yourself “lucky” as it can make your diagnosis easier. Note that not all faults will trigger the check engine light.