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L29 VIN J 7.4L Vortec (fuel rail, 8-injectors, FPR & wiring harness TSB maybe?

Sorry to revive a dead thread, but what is NLA? I need a new rail and it seems like nobody on planet earth makes them anymore.
- bigblockburb
- Post #7
- May 23, 2024
- Forum: Engine Performance + Maintenance
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Fuel leak after replacing injectors

Here is a picture of the fuel lines, they are a huge pain in the ass to reach with the whole manifold installed so I can’t very easily test to see if its loose and it’s basically impossible to see without a endoscope. Does the back one look loose? Its not sunk as deep in as the top one judging...
- bigblockburb
- Post #3
- May 23, 2024
- Forum: Engine Performance + Maintenance
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Fuel leak after replacing injectors

Here is the split that Im talking about, thats the end that goes into the fuel rail. It was the only one like this and I put it up front so that it’s visible from the outside. But it doesn’t seem to leak. Could it still cause problems?
- bigblockburb
- Post #2
- May 23, 2024
- Forum: Engine Performance + Maintenance
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Fuel leak after replacing injectors

I have a 1997 GMC Suburban 2500 with the 454 L29 motor. Its a strong engine but way more of a b*tch to work on than the 5.7 ‍ I replaced the fuel injectors with the supposedly upgraded bosch injectors (stock ones had 8 holes, these ones have 4 holes??) I bought a refurbished set of 8 from ebay...
- bigblockburb
- Thread
- May 23, 2024
- 454 fuel injectors fuel leaks
- Replies: 3
- Forum: Engine Performance + Maintenance
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What is the proper way to engage 4x4?

I have a 1997 gmc suburban k2500 with the push button 4x4. I put the truck in neutral, push 4 hi, put it in gear and roll forward a bit but the 4x4 doesn’t engage and the light keeps blinking. I replaced the actuator motor and it still does this. It is a NP243C case, 4L80-E transmission.
- bigblockburb
- Thread
- Apr 17, 2024
- Replies: 4
- Forum: Transfer Cases
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Front wheels track wider than rear?

I have a stock 1997 GMC suburban k2500 and the wheels stick out further in the front. I don’t really like the look and I don’t want to put spacers on the back. Anything I can do to suck the wheels in some?
- bigblockburb
- Thread
- Apr 17, 2024
- Replies: 4
- Forum: Stock Suspension + Bolt On Kits