CK5
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That's exactly what I was thinking... Sorry been out back on my patio for 3 hours having some cold beverages and now just fired up the grill for some pizza. :rotfl:
 
Maybe, but check the diameter of the upper neck on your radiator. Make sure that it is the correct size.
If it is correct, then '89-'91 Blazer will work. I would bet that your lower is correct.
 
R.I.P. Gunny

Anyways. I can’t wait to see tomorrow’s task.
Yeah we had massive wind gusts here today. Wasn’t going to open the hood.

If it’s clear tomorrow I’ll put that red spring, new filter, and that gage in. Give it a whirl
 
So...

Changed the fuel gage, air cleaner, and fuel pressure spring. Getting 16.5 psi at idle. Pulls harder in 3rd.

First drive noses over at 4800 in 2nd (foot on floor) Shut it off to go in the parts store. Second round pulled up to 5300 before it nosed over. Going 75 in 4th (uphill and head wind) was a little lazy trying to accelerate

Probably getting too much fuel again, but it felt like it was trying to correct. Runs good until the nose over or flutter. Honestly feels fat

I’ll order an ALDL/USB cable and data log it now. In the mean time I’m gonna drive it and see what it tunes out. Hopefully change the coil this week
 
Ended up pulling the red 18 psi spring out of the regulator. Just too much fuel and the ecm can’t compensate enough to tune it out using the larger pump and fuel lines

@mrk5 was awesome enough to find a yellow 14 psi spring he ordered years ago. Gonna try that now. Honestly think I just need a slight pressure bump from where I was. Remember after changing the pump was the best it has ran since it’s been injected

2F6FB48C-FB9B-437C-8189-27EB375A93C5.jpeg
 

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