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Fuel injectors

Tiny
KEITH66
  • MEMBER
  • CHEVROLET BLAZER
I have a 1999 chevy blazer, 4.3 l with 130000 miles on it. It cuts out upon acceleration and I have been racking my brain trying to figure out why. The fuel pump is fairly new and I believe that I replaced the press reg too. Fuel filter, plugs, wires, cap, rotor, and coil are all new. Last summer I had to replace the intake gasket and while it was apart I cleaned eveything real good. Today I cleaned the IAC and the pcv. The only thing I can think it could be is one or more of the injectors but how do I check them on this type of system (CSEFI)?
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Monday, March 26th, 2007 AT 1:29 PM

2 Replies

Tiny
BOOTDOG
  • MECHANIC
  • 665 POSTS
You'll need to hook a scan tool using the OBD-II connector, and hook a fuel pressure gauge to the fuel rail. Using the scanner you can pulsate the injectors one by one and monitor the gauge to see if they're operating properly. I know everyone doesn't have a scanner, but that the way to go.
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Tuesday, March 27th, 2007 AT 10:18 AM
Tiny
KEITH66
  • MEMBER
  • 2 POSTS
Thanks for the tip Bootdog. Unfortuneatly I will have to take it to some one because I do not own a scan tool.
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Sunday, April 1st, 2007 AT 8:52 AM

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