Recent content by MtnMan

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95 K2500 7.4L TBI issue

Thanks for the info. I will be doing more research on PSI requirements for replacement injectors. I just find it odd I have a factory GM service manual and it says 10-13psi but I can't find the specs for the OEM part number (17113080) or a replacement for that number to compare what I have to...
- MtnMan
- Post #13
- Jul 19, 2023
- Forum: Engine Performance + Maintenance
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95 K2500 7.4L TBI issue

I contacted Chevrolet and those original injectors were discontinued based on my vin number. I got the original OEM number and am going to verify the replacements I got are compatible. I will be also looking up the specs for the idle settings at the throttle plates so I have a better starting...
- MtnMan
- Post #9
- Jul 19, 2023
- Forum: Engine Performance + Maintenance
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95 K2500 7.4L TBI issue

As an addition I have a 93 Suburban with the same set up 7.4L and the only visible TBI difference is there is not a vacuum pot working the idle off the MAP sensor. It runs great.
- MtnMan
- Post #5
- Jul 17, 2023
- Forum: Engine Performance + Maintenance
M
95 K2500 7.4L TBI issue

My service manual said 10-13psi and the truck has never had a problem until I had an injector go bad (started dripping at idle). It's a Ticonderoga engine. I bought new injectors from Rock Auto and installed them along with a kit diaphragm with the original spring (I also have an adjustable...
- MtnMan
- Post #4
- Jul 17, 2023
- Forum: Engine Performance + Maintenance
M
95 K2500 7.4L TBI issue

I need to know what fuel pressure is required for a 7.4L TBI. I don't get any codes, but it won't idle when cold and won't stay running long enough to warm up. I have replaced the fuel injectors, diaphram, ICV and ICU. I have 13PSI at the fuel line into the TBI. I have tried adjusting the...
- MtnMan
- Thread
- Jul 16, 2023
- Replies: 13
- Forum: Engine Performance + Maintenance