ramhunter9
Senior Member
- Joined
- Jun 25, 2010
- Posts
- 24,464
- Reaction score
- 975
- Ram Year
- 2012
- Engine
- P-Star Jeep Wrangler
Amount of fall ?
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Amount of fall ?
Got ya ..
We have some CTD guys on here .. this is good info for them also !
Operation
Fuel volume from the fuel transfer (lift) pump will always provide more fuel than the fuel injection pump requires. The overflow valve (a check valve) is used to route excess fuel through the fuel return line and back to the fuel tank. Approximately 70% of supplied fuel is returned to the fuel tank. The valve opens at approximately 97 kPa (14 psi). If the check valve within the assembly is sticking open, fuel drainage of the injection pump could cause hard starting. If a Diagnostic Trouble Code (DTC) has been stored for “decreased engine performance due to high injection pump fuel temperature”, the overflow valve may be stuck in closed position.
7. Reduce regulated air pressure to 10 psi and observe valve. Valve should stay shut. If not, replace valve.
Makes total sense . So it is safe to say if you fall 10psi or lower ... look at the filter first , then kinks or blockage in the lines .
So I have a 3 psi fall ... how can I tweek it , or is it worth loosing sleep over ?
And that can be corrected how ?