AFPR or Fuel Pump

improved

Running!
Authorized Seller
Joined
Apr 4, 2005
Messages
208
Location
California
Hello All,

While doing some basic maintenance I checked the fuel pressure and adjusted it to 38 with the vacuum off at idle. An increase of 3. I took the supra for a ride and car boosted and worked well. Next day I went to get gas and it felt like the car hit a boost leak/fuel cut = limp mode. Brought the car home identified no boost leak.

I started checking fuel components next. I had 1/4 tank left of new gas. The EFI fuse and Walpro fuse (direct 12v powered) were good. I can also hear the pump energize. The car starts easily, idles well. I checked the fuel pressure it was at 20 and with the vacuum off 20. I tried adjusting, there was no change in pressure. I'm thinking its the fuel pump, afpr, or a blockage: what do you think?

I'm running a 1jz, driftmotion AFPR kit with solid lines, 440, walpro 255...all fuel parts with roughly 5-6k miles on them.
 

improved

Running!
Authorized Seller
Joined
Apr 4, 2005
Messages
208
Location
California
It was the fuel pump! While I was there, replaced the fuel filter too.. Its running great!