Hi All,
I searched thru this forum before posting to see if I could find any other situations similar to this one since I wasn't looking to waste anyone's time. I appreciate any insight or help anyone can provide...
I have an 85 GT that I have owned since 89. It has gone thru many upgrades and maintenance and is in great condition since it has been garaged it entire life since I've owned it. Here is a quick low down of the mods:
The engine has GT40X heads, E303, Performer RPM, 600 DP, Performance Dist, Ford Racing headers, 2.5" stainless exhaust with Dynomax VT's. The car is a 5 speed ad well with 3.55's. Holley mechanical fuel pump and under-drive pulleys. The AC has been upgraded to R134 as well and has the a throttle solenoid for idle... And a wide-band with gage.
The issue that I am having is, during a trip with the wife the other day on our way to the Mt. Washington Hotel in NH, we were going up a steep hill, the notch, and the car was bogging and running out of gas. As soon as I let off a little, I was able to keep going. Unfortunately, the car was now running super lean (15-16) and not wanting to idle. Great way to arrive at the hotel for lunch. After letting the car sit for a couple hours, I turned out the idle screw to richen up the mixture. The car still didn't want to idle but a few miles down the road, the cruise was back to normal and the wide-band was reading in the 12's. We were able to make it back to Maine with no problem.
We did fill up with fuel at the beginning of the trip and was wondering if there may have been water or something else in the fuel. The car does sit most of its life these days so who knows what kind of contaminates could be in the tank.
The next day, I pulled the carb and went thru the whole thing an cleaned it out with some carb clean and compressed air. Oddly, nothing was discovered other that the carb studs maybe not torqued as much as they should be. I ran the car and noticed that the fuel pressure was at around 7 psi until it warms up. Then it goes down to 2.5-3 psi. The gage spikes once in a while. Certainly, this low pressure will not keep up with filling the carb bowls during hard acceleration.
Has anyone seen this type of thing happen with the pressure? I am wondering if the rubber hose in the fuel system may be collapsing or the fuel sock is clogging? or the pump may be defective? I may try to test the fuel pump after warming up the engine by using a gas can as the supply and see if the pressure goes back to normal. Anything I may have missed? I also may replace the rubber hoses and drop the tank to clean it out and check the pick up sock.
Thank you in advance for any in-sight or recommendations you can make. Cheers
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