Recent content by jrdecat

  1. jrdecat

    Crank No Start After Driving

    Got under the hood again today to watch and listen while it runs. I noticed that there is some residue / indication of leaking where the IM meets the head and also around a couple of the fuel injectors. I had been keeping my engine so clean since the swap that I had never seen any of that. Now...
  2. jrdecat

    Crank No Start After Driving

    Ran down to AutoZone to borrow their fuel pressure gauge again. Pressure is 50 with vac line disconnected and now I smell like gasoline again.
  3. jrdecat

    5.3L hard start when warm

    Really? We are both having warm start issues.
  4. jrdecat

    Crank No Start After Driving

    Thank you. I have the flex w/regulator on the rail, so 48-54 w/ vacuum disconnected is the target. Of course, I didn't check with the line disconnected this time around. This is the second time farting around with the fuel pressure gauge and I know I did that last time, and that the pressure...
  5. jrdecat

    Crank No Start After Driving

    I got the vehicle with 105k and now it has 135k. I have never replaced the pump and don't know about its prior history. She's going into the shop for a new front diff in a couple weeks. I'm just going to have them do a little troubleshooting with their fancy scanner.
  6. jrdecat

    Air Compressor Mounting Suggestions

    So I have a Viair compressor and tank setup that I'd like to finally put on after buying it 5 years ago for a different vehicle. Any suggestions on where to mount the tank and compressor? I'm planning on putting some semi truck horns behind the grill and probably put a fitting in the front...
  7. jrdecat

    Crank No Start After Driving

    I did put a noid light on it. I have injector pulse (noid light flashes) and spark from the plug wires while cranking with no start condition. It is the original flex fuel pump and flex injectors which flow at a higher rate. That was taken into account with the tune...or so I'm told.
  8. jrdecat

    Crank No Start After Driving

    Fuel pressure varies from 42# when coasting without pressing on go faster pedal to 50# when I get on 'er like a rat on a cheeto. Here's my log from today with conditions. 12:01pm FP: 40 Water Temp 55* Air Temp 35* Successful start on first crank 12:08pm - turned off - had been driving since...
  9. jrdecat

    Crank No Start After Driving

    9:53am Fuel pressure at 0. Key on and pressure jumps to 50, then down to 48. Crank engine an it starts with water temp of 48* and air temp of 35*. Let run about 15-20 sec at 40# fuel press and then turned off. Waited about 30 sec. Fuel press still at 40. Key on and pressure jumps to 50, then...
  10. jrdecat

    Crank No Start After Driving

    Ok, so now I have a fuel pressure gauge hooked up to the port on the injector rail. 2 Attempted starts under identical conditions with different results. I had just returned from AutoZone to get the gauge and let the beast sit for about 15 minutes. 1. Turn key on, 50 psi. 179* engine temp, 57*...
  11. jrdecat

    Crank No Start After Driving

    Hooked up a noid light to the injector harness and spark tester. I have both spark and injector pulse. I'll pick up a fuel pressure gauge later today and start logging fuel pressure readings. Any other ideas now that I've ruled out injectors not firing or no spark?
  12. jrdecat

    Crank No Start After Driving

    Sooooo close! After finally getting the fuel filter changed, O2 sensors replaced (with OEM), and 2 cans of seafoam in the 1/2 full tank I took Fat Konnie for a test drive. The first start took two bumps like normal, but for the next 2 hours I made 5 stops of about 5-11 minutes in duration and...
  13. jrdecat

    Fuel Filter Replacement 5.3 Flex Fuel

    Resurrected thread!!! Dealt with this crap for about 2 hours. How hard can a fuel filter be? Too bad I didn't read this beforehand! I ruined a disconnect tool in the process.
  14. jrdecat

    Crank No Start After Driving

    Scangauge II. Definitely not a high end tool...like myself.
  15. jrdecat

    Crank No Start After Driving

    I found an email that had some numbers from my last fuel pressure test... With key on engine off, the fuel pressure pops right to 52. After running it drops to 15 within a few hours and to zero overnight. If it was a fuel pump losing prime, then I wouldn't have a problem starting right after...
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