October 18, 2019, 01:04:24 AM

Author Topic: Strange Fuel Pressure Issue  (Read 2226 times)

Offline Supe

Re: Strange Fuel Pressure Issue
« Reply #15 on: June 05, 2019, 08:34:54 AM »
Glad you figured that out!  I will have to remember that one.  Guess I will stick to a little vaseline or fuel line assembly lube for all my future O-rings.

Offline Cobranut

Re: Strange Fuel Pressure Issue
« Reply #16 on: June 05, 2019, 09:01:55 AM »
Yep, neither PTFE or silicone will dissolve in hydrocarbons. 
I learned that many years ago when I used silicone grease on the gaskets when rebuilding a Holley carb.
I ended up with little balls of silicone grease clogging the jets and nozzles. 🤬
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline shainiac

Re: Strange Fuel Pressure Issue
« Reply #17 on: June 05, 2019, 09:33:26 AM »
I now need to take my surge tank out AGAIN and clean/reassemble with vasoline or grease. I'm looking at buying a Fuelab 6u filter with a pleated element which should help in the future.
I should have checked the filter as soon as I swapped the pumps because I found a pebble-sized ball of good rolling around inside the surge tank. It was definitely Krytox. I should probably check all of my injector baskets also since I used it to assemble them too  :banghead:
'88 TII -  SBE 5.3L, Twin EFR 6758s, T56 Magnum, Ronin 8.8" IRS, MS3Pro Ultimate
716whp/662wtq @1.3bar

Offline cholmes

Re: Strange Fuel Pressure Issue
« Reply #18 on: June 05, 2019, 12:00:11 PM »
I'm making a mental note of this as well; I've used silicone grease on a few engine gaskets before, to prevent them tearing upon later removal. I'm going to be very careful about this from now on. Thanks for the update shainiac -- you may have prevented a lot of mysterious problems for other people in the future.

Offline babillaracing

Re: Strange Fuel Pressure Issue
« Reply #19 on: June 09, 2019, 04:12:41 PM »
sweet victory

Offline shainiac

Re: Strange Fuel Pressure Issue
« Reply #20 on: June 09, 2019, 05:27:17 PM »
Thanks, guys.
I've been driving the car around all weekend and fuel pressure seems fine on wastegate pressure (4.5psi). I bought a Fuelab 6 micron pleated fiberglass filter that should be here this week. Still some things I need to tidy up before I get to turning up the boost.
'88 TII -  SBE 5.3L, Twin EFR 6758s, T56 Magnum, Ronin 8.8" IRS, MS3Pro Ultimate
716whp/662wtq @1.3bar