300ZX (Z32) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

I dont know

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Old 12-30-2007 | 07:53 PM
  #1  
domsgarage's Avatar
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Tough Guy
 
Joined: Nov 2003
Posts: 851
From: NJ
I dont know

Ok so. When im driving all normal like. Like straight cruising the hood for biddies and what not. My car seems to be like, i dont know, stuttering maybe. It kind of feels like its bogging.

When I open it up, parkway driving, where im hitting 80 or more, it seems fine and smooth. I have no idea what this problem is. I put an engine cleaner in it the first time it started to do this and that seemed to clean it up about half way through the tank. Its happening again and im not going to keep pouring that **** in my engine.

Any ideas??

This happens in all gears. I changed my fuel filter recently, which I thought could have been some what of an issue since i havent changed it in four years..... im sorry guys.

Any ideas would be awesome. Thanks.
Old 12-30-2007 | 11:04 PM
  #2  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
Is the ecu throwing any codes?
Old 12-31-2007 | 08:58 AM
  #3  
b300z's Avatar
caught the z fever
 
Joined: Jun 2004
Posts: 2,518
From: Lafayette, IN
search..........i thought silvr was getting rid of the 10 character thing
Old 01-03-2008 | 03:31 AM
  #4  
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Joined: Nov 2007
Posts: 17
Sounds like dirty fuel try running a fuel system clener like (heet or deet not sure maybe even heat) this will actually get rid of the accumulated moisture in the bottom of your tank and it could also be a dirty or clogged fuel injector. Also might want to take your fuel filter and dump it into a clear jug to see what comes out, even if you dont see anyhting then i would replace it anyway. Check all your plugs for fowling. Check your timing.

If that doesnt do it then let us know and ill keep thinking as will some other's who would have mroe expierance then me on Z specific tech.
Old 01-03-2008 | 04:31 AM
  #5  
snwbrderphat540's Avatar
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Joined: Sep 2005
Posts: 9,532
From: lemont, Illinois
dont run heet, those alcohol based products shouldnt be ran through Z32's. also i doubt he just randomly got dirty fuel.
Old 01-03-2008 | 07:16 PM
  #6  
domsgarage's Avatar
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Tough Guy
 
Joined: Nov 2003
Posts: 851
From: NJ
Fuel is brand new. I changed it when it first started happening.

I ran the sea foam fuel cleaner through it and I thought it had cleared it up.

The problem is intermittent.

I think one of my coil packs may or may not be shortening out.

I was thinking it was a possible misfire but wasnt really to certain about that untill my friend had said the same thing to me.

Then he did this thing and put his head up to my hood and said its misfiring in the left bank. Hes an idiot, but, is there a way I can check, ohms or whatev to see if one of these are shorting?

Let me know playas.
Old 01-03-2008 | 07:18 PM
  #7  
domsgarage's Avatar
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Tough Guy
 
Joined: Nov 2003
Posts: 851
From: NJ
P.S. It clears up after 3500rpm, but under that it still has that bogging like feeling to it, it all gears.
Old 01-08-2008 | 01:46 AM
  #8  
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Joined: Apr 2004
Posts: 139
From: Bum Fak SD right now...
You should really check ur ECU for codes...that will point you in a good direction (at least to start). But sounds like the classic symptoms of the MAF, if it is only around the 2k-3k rpms.

Last edited by Mousier158; 01-08-2008 at 02:34 AM.
Old 01-08-2008 | 07:15 AM
  #9  
CanyonCarver's Avatar
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Joined: Jun 2004
Posts: 2,296
From: Acton, California
The classic symptoms are vacuum leaks.
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