I think my FPR (original one w/190xxx miles) is going out. I just ordered these:
BBK-1617 Fuel Pressure Gauge (http://"http://www.summitracing.com/parts/BBK-1617/")
BBK-1706 Billet FPR 35-70 psi (http://"http://www.summitracing.com/search/?keyword=bbk%201706&dds=1")
From what I've read, a stock 5.0 HO should be around 38-39 psi at idle...can anyone confirm this? I put in a new BBK fuel pump (190lph??) when I did the HO swap and changed the fuel filter last spring.
39 vac unhooked
Thanks.
I got my fuel pressure regulator installed last night. It took some redneck ingenuity to get the very back allen head bolt back in. My allen wrench would not fit so I found the correct size 1/4" drive allen head bit, applied duct tape to the back of a 1/4" gear wrench brand end wrench (to keep the bit from falling out), and finally after about an hour got the bolt started. I ended up getting a long flat head screw driver and prying upwards on the bolt while ratcheting the wrench to finally get it started in.
After that I unhooked the vac line and set the pressure at 39psi. I took the car for a drive and re-checked the pressure. I noticed the pressure was now only around 30 psi!! I finally figured out that the liquid in the BBK gauge I am using must have heated up and thrown off the reading! Something to keep in mind if you guys are ever in the market for FP gauges. I would stay away from the liquid filled ones as they are only accurate when underhood temps are cool.
On a side note my car seems to be experiencing a slight miss/hesitation under WOT or a load...the plugs/wires/cap/rotor are all only a couple of years old but sounds like I need to check them out.
I should have read this before (from Summit's website):
Oh well, all you have to do is make sure and check the pressure when the engine is cold. Really not a big deal I guess.