Runs fine at idle, but seems to starve when the gas is hit

calebcoe · #1 08-13-2005, 03:27 PM

The other day i was just driving as normal, and my blazer (92' 4.3 vortec, auto) seemed to just loose power, then it seemed like it wasnt getting fuel because it would chug and jerk. I drove it home and parked it, I have changed the spark plugs, distributor and cap, and fuel filter. When I start it up, it runs fine at idle, but when i go to drive it and increase the rpm's a bit, it does the choke out and chugging. I can hear the fuel pump when i turn the ignition, so im not sure if its that. It only seems to do it after it has been running for over a couple of minutes. Anyways, any help would be appreciated. Thanks

s10blazerman4x4 · #2 08-13-2005, 03:44 PM

checked for washing under vortech name plate.

calebcoe · #3 08-13-2005, 04:04 PM

how do you mean by "washing"? Thanks

BlazerLT · #4 08-13-2005, 04:08 PM

please search for CPI injector and nut kit.

This has been discussed many times.

calebcoe · #5 08-13-2005, 07:56 PM

i did a search for cpi injector and nut kit but didnt get anything, and im still not sure what you mean by washing

gtboiii11 · #6 08-13-2005, 09:20 PM

well dont go cpi nut kit just yet, that seems to be his answer for everything, how loud is the pump when u start it and if you put the pedal to the floor when first driving what will happen?

BlazerLT · #7 08-13-2005, 09:40 PM

http://www.automotiveforums.com/vbul...jector+washing

s10blazerman4x4 · #8 08-13-2005, 10:31 PM

Yeh but have you noticed that when he says that it is usually the problem.I have read enough threads with people having problems with there cpi nut kit to have some idea.So leave him alone its either that or vacuum which is a big problem in our rigs.

gtboiii11 · #9 08-14-2005, 04:24 PM

yea thats also the first thing he said to me and it was wrong so i dont need your 2 cents, im going with the fuel pump we will see who wins

s10blazerman4x4 · #10 08-14-2005, 05:27 PM

How do you know it was wrong?I did not know you were living with calebcoe?I never knew i gave you 2 cents i dont even have 2 cents to my name to give.

gtboiii11 · #11 08-14-2005, 05:36 PM

read what i said you interpreted it wrong

BlazerLT · #12 08-14-2005, 06:43 PM

Quote:

Originally Posted by gtboiii11

read what i said you interpreted it wrong

Why don't you shut up and stop discrediting the advice given to help the thread starter.

The CPI injector is the problem with the CPI system and not the fuel pump.

If it was the fuel pump, it wouldn't even start.

s10blazerman4x4 · #13 08-14-2005, 07:32 PM

Quote:
--------------------------------------------------------------------------------
Originally Posted by gtboiii11
read what i said you interpreted it wrong

Quote:

Originally Posted by BlazerLT

Why don't you shut up and stop discrediting the advice given to help the thread starter.

The CPI injector is the problem with the CPI system and not the fuel pump.

If it was the fuel pump, it wouldn't even start.

Thank you BlazerLt.

calebcoe · #14 08-14-2005, 07:42 PM

thanks for all the advice guys, couldn't it be the fuel pump going on the out, or possibly something in the fuel line, im gonna check the fuel pressure tomorrow. It almost seems to be something with the exaust. About two months ago i cut the catalytic converter out, cause it was causing an egr type of stutter, and that worked, but this seems exactly the opposite of the egr type symptoms, it runs fine at idle, and drives fine at low rpm, just any higher than 2000 rpm in seems to choke out. Thanks guys

BlazerLT · #15 08-14-2005, 07:55 PM

The Cpi Injector And Nut Kit!!!!!

Can You Listen To Us, We Are Telling You Your Problem And You Keep On Ignoring Us!!!!

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