I have a 5.0 HO in a Ranger pickup. The engine has been hard to start which I determined was due to low fuel pressure. I jumpered the EEC-IV test connector to run the fuel pump constantly when the key is in "run" and that helped, I let the pump run about 3 seconds before starting and it works. I put in a new filter with no change. The in-tank 88 lph pump is fairly new and I use 93 octane non-ethanol gas so I'm puzzled that it's taking so long to build up pressure. I put in a fuel pressure gauge that shows good pressure when running, 38 psi at idle and about 45 psi at full throttle. So the in-tank pump works well except when starting. On a whim, I bought a 255 lph Walbro pump that I'd like to plumb after the in-tank pump and run both in series. Does anyone see a problem with running both pumps in series a) if they're both good or b) if the in-tank pump is failing, dies?
I considered that the filter sock on the in-tank pump may be clogged but it supplies good pressure at WOT and I thoroughly rinsed the tank when I replaced it. Ethanol gas had reduced the original pump to a lump of rust after sitting for six months. Also, fuel from the pump, before the filter, is pristine.
Please, please, don't suggest it's a regulator issue. I can barely fit a finger between the engine and the firewall, so accessing the regulator under the upper intake is a very major issue.
Another question, the Walbro pump draws 20 amps. I'm planning on using #14 stranded wire, sound good?
I have #14 on hand but can buy #12.
I considered that the filter sock on the in-tank pump may be clogged but it supplies good pressure at WOT and I thoroughly rinsed the tank when I replaced it. Ethanol gas had reduced the original pump to a lump of rust after sitting for six months. Also, fuel from the pump, before the filter, is pristine.
Please, please, don't suggest it's a regulator issue. I can barely fit a finger between the engine and the firewall, so accessing the regulator under the upper intake is a very major issue.
Another question, the Walbro pump draws 20 amps. I'm planning on using #14 stranded wire, sound good?
I have #14 on hand but can buy #12.
died with the last of the dual-tank trucks that were the last to use it. (And they were worse, three pumps, a selector valve, and a switch that all liked to fail.)
