Post all 4 readings so we can analyze them.

 

You will have them bout as soon as I do :-)

 

Some thing very strange is going on here. Finally have the tester. Hooked it up to the front of the fuel filter and it goes up to 40 psi turn the key off jumps up to 55. Plus when I push the button to purge the gauge the needle starts going up again. If I hold it open I can see gas flowing (not much) but just enough to make the needle start going up a few psi. Thinking fuel filter. But why would it jump up to a higher psi when I turn the key off? And the test at the motor is 20 psi and drops fast. I almost hear gurgling noises when the key is turn on then off.I may have a few things going on here. Fuel filter for one. I'm going to buy one today then retest it there.

 

No that would be the fuel pump. It is not meeting the minimum required pressure. Not even close. The filter will have nothing to do with the Max pressure even if it is partially clogged. Pressure will build to its maximum no matter what restriction there is if there is any opening at all. the fluctuations may have something to do with it being partially clogged but the pressure will not be affected. Pump is bad.

 

These should fit in my ride?

New Global Automotive Fuel Pump Module Assembly Blazer Bravada Jimmy 4DR E3992M | eBay

1996 1997 1998 1999 Chevy Blazer Fuel Injector Spider 4 3L Mpfi Csfi Truck Van | eBay

 

The injector assembly is the old style, and it is used. The pump is probably an "offshore" POS, boxed in the USA. Both are junk, stay away, total waste of money.

The injector is Delphi # FJ10565 or AC Delco # 217- 3028, in a pinch BWD 63885.

Fuel pump needs to be one of these, and it MUST be Genuine, NOT a knock off.

AC Delco # MU1733 or Delphi # FG0052

Check Amazon, Ebay, Rock auto.com

 

Thanks Captain Hook for the make and brand info. One more I would change the fuel regulator. What be the best brand for that? Now for the easy part labor. I say it in that way cause my Dad always told me is you know what a problem is? Not knowing the answer. Once you know the answer it is not a problem no more. The problem is getting er done.......

Just to give you a time frame be about a week before I will be giving more info.

 

New Fuel Injector Central Multi Port Spider GMC Chevy 4 3 Vortec Quality | eBay

ACDelco Fuel Pump Module Assembly Fits 98 04 Blazer Jimmy Bravada 4DR Model | eBay

 

I bought a carmd. This is what it returned:

Report Details

Vehicle Information
Year 2000
Make CHEVROLET
Model BLAZER
Stored Codes
Code Condition
P0101 DTC P0102-P0103, P0106-P0108, P0112-P0113, P0121-P0123, P0335-P0336, P0401, P0440-P0449, P1106-P1107, P1111, P1112, P1121-P1122 and P1441 not set, system voltage 11-18v, TP angle less than 95% (± 5%), MAP signal less than 80 kPa (± 3 kPa), all conditions met for 1-3 seconds, and the PCM detected the actual MAF frequency was not within a preset range of the calculated MAF value, condition met for more than 4.0 seconds during the CCM test.
P0304 DTC P0101-P0103, P0116-P0118, P0125, P0128, P0335, P0336, P0341, P0343, P0502, P0503, P1114, P1115, P1120, P1220, P1221 or P1336 not set, engine speed from 450-5001 rpm, system voltage over 10.0v, ECT sensor from 19-266ºF, fuel level over 10%, TP angle steady (±1%), ABS, AIR, Traction Control and DFCO all "off", transmission not shifting, A/C status steady, ABS signals less than the rough road thresholds, and the PCM detected a crankshaft speed variation in one cylinder characteristic of a misfire condition. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!
Pending Codes
Code Condition
P0101 DTC P0102-P0103, P0106-P0108, P0112-P0113, P0121-P0123, P0335-P0336, P0401, P0440-P0449, P1106-P1107, P1111, P1112, P1121-P1122 and P1441 not set, system voltage 11-18v, TP angle less than 95% (± 5%), MAP signal less than 80 kPa (± 3 kPa), all conditions met for 1-3 seconds, and the PCM detected the actual MAF frequency was not within a preset range of the calculated MAF value, condition met for more than 4.0 seconds during the CCM test.
P0304 DTC P0101-P0103, P0116-P0118, P0125, P0128, P0335, P0336, P0341, P0343, P0502, P0503, P1114, P1115, P1120, P1220, P1221 or P1336 not set, engine speed from 450-5001 rpm, system voltage over 10.0v, ECT sensor from 19-266ºF, fuel level over 10%, TP angle steady (±1%), ABS, AIR, Traction Control and DFCO all "off", transmission not shifting, A/C status steady, ABS signals less than the rough road thresholds, and the PCM detected a crankshaft speed variation in one cylinder characteristic of a misfire condition. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

 

Wow, didn't even read all of it. Clear the codes and go drive it, then retrieve them again.