Search results

  1. Fragment

    The Stupid Engine Questions Thread

    Here's my stupid question... In this video here: Youtube Is the noise on the passenger head a valve adjustment issue, or an exhaust leak in your opinion? Drivers head is shown first for comparison. Thanks!
  2. Fragment

    5.7 vortec long crank

    Man this sounds exactly like the issue I've been having. Definitely watching your thread for a resolution! I have the SMP injector set installed by the way. Had an AC Delco one in there originally.
  3. Fragment

    Extended crank when warm or hot on crate GM L31

    You may really be on to something here. A lot of the time when I shut the truck off it does smell like raw fuel around the back of the truck. Not from the exhaust pipe, but just in the general area. I replaced the fuel tank when I did the engine swap because the old one was in bad shape. After...
  4. Fragment

    Extended crank when warm or hot on crate GM L31

    I have swapped the ECM with a core ECM I received from Blackbear. It made no change unfortunately.
  5. Fragment

    Extended crank when warm or hot on crate GM L31

    Look man... I've been troubleshooting this problem for years now. I most definitely have combed over every bit of scanner data that I can pull from this thing and it all checks out. Haven't you ever reached a point of head scratching that you just try some common things? I have two trucks...
  6. Fragment

    Extended crank when warm or hot on crate GM L31

    Unfortunately I am still having this issue with this truck. I have tried three different coolant sensors.
  7. Fragment

    4 wheel drive vs 2 wheel drive engine mounts

    I installed the Poly mounts pictured above and had no problems with them fitting in both a k1500 and k2500 over the years... but I didn't like how stiff they were, and how much vibration they transmitted to the cab. I found these from vatozone though, and was impressed with the near OEM...
  8. Fragment

    Energy Suspension 3.1131R Motor/Transmission Mount Set

    Sure! Will PM you.
  9. Fragment

    Energy Suspension 3.1131R Motor/Transmission Mount Set

    Will accept any reasonable offer. Need these off my workbench.
  10. Fragment

    Energy Suspension 3.1131R Motor/Transmission Mount Set

    Correct, and my pickup’s stock mounts are still good!
  11. Fragment

    Energy Suspension 3.1131R Motor/Transmission Mount Set

    I could just feel the engine too much for my liking. More of a sports car kind of way. Which was fine and all… but not what I wanted for the suburban. Hope that helps.
  12. Fragment

    Energy Suspension 3.1131R Motor/Transmission Mount Set

    Hey all, I used this set in my suburban for a tad over 500 miles. Nothing wrong with them, but they were just too firm for my liking. If anyone is looking to buy a set of these I’ll let them go for 90$ shipped. I do not have the bolts that came with them because I used them on my replacement...
  13. Fragment

    Extended crank when warm or hot on crate GM L31

    See I have that one and one of the standard blinking ones. I tried both. And of course the blinking one doesn’t show the “quality” of spark… but they both seemed just fine.
  14. Fragment

    Extended crank when warm or hot on crate GM L31

    Good thought on the ignition switch. I’ve thought of that but haven’t devised a good way to test it. My tester gap is .65in. Not .065. It’s the tester of this style The problem is I don’t know if it’ll do the extended crank until I turn it over, and once I release the key to hook up a test of...
  15. Fragment

    Extended crank when warm or hot on crate GM L31

    No it’s 25 on the spark tester… not sure what the units are. I think it’s meaning kV. Anyways… it translates to about .65 inches gap between electrode and cathode of the tester. Sorry for the confusion…
  16. Fragment

    Extended crank when warm or hot on crate GM L31

    The fuel pressure is 58-56 when cranking all the time. Hot or cold. I used a spark tester with the gap set at 25 (is that what you mean by calibrated for HEI?) on a couple plugs and it was a clean blue spark. I didn’t do this when it was acting up, because it’s hard to pin down when that will...
  17. Fragment

    My 2000 C2500 5.7L Vortec

    Love how clean and stock your truck is!
  18. Fragment

    1996 K2500 Suburban—Green and red AKA Christmas Tree

    Nice looking suburban!
  19. Fragment

    Extended crank when warm or hot on crate GM L31

    Yeah it’s got the new conmection. Have checked the fuel pressure countless times and have put two different Delphi pumps in there. Have even run two temporary wires to battery for pump. Same old story. It just seems so much like a leak down problem… but it isn’t.
  20. Fragment

    Extended crank when warm or hot on crate GM L31

    Does your vent line run to the center barb on the fuel pump module? I think that’s how my pickup is. Anyways… fuel issue solved. Extended cranking is not unfortunately.
  21. Fragment

    Extended crank when warm or hot on crate GM L31

    Yes. A 410 to be specific. This is a suburban.
  22. Fragment

    Extended crank when warm or hot on crate GM L31

    The valves look like This. One on each corner of the tank with a tee and a hose that runs to the charcoal canister.
  23. Fragment

    Extended crank when warm or hot on crate GM L31

    Update on all of this: I replaced the vent valves at the corners of the gas tank and the fumes are gone from the back so that is all good to go. Ive checked that temp sensor more times than I can count now… I’ve graphed it with a scanner hot and cold and warming up. I’ve never got a bad...
  24. Fragment

    Extended crank when warm or hot on crate GM L31

    Don't see any stray sparks in the dark... but the rear does smell like gas a little after running it. I replaced the tank and pump and all when I did the engine replacement, and noticed the two "roll-over" vent valves were a little loose when I put them back on and have just attributed the smell...
Top