LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Rough starting

Old Jul 12, 2004 | 12:52 PM
  #1  
hashimsaleh's Avatar
Thread Starter
Registered User
 
Joined: Oct 2003
Posts: 86
From: windsor, ontaro
Rough starting

All of a sudden i go to turn my car on..and it doesn't start right away ... sometime i have to turn the key twice...and it starts the second time with alittle gas of course
i just replace the fuel pump, filter, spark plugs, and wires

it feels like its not getting gas or a spark or something
any advice is great
Old Jul 12, 2004 | 01:08 PM
  #2  
Injuneer's Avatar
Administrator
 
Joined: Nov 1998
Posts: 71,119
From: Hell was full so they sent me to NJ
A few possibilities:

Have you checked the coolant temperature sensor? It needs to tell the PCM the engine is cold, so it can richen up the mixture for cold starts.

Did you check the fuel pressure? Does it hold 42psi after you shut the engine down?

Have you checked for leaky injectors? Dripping injectors could be loading up the cylinders with fuel at shutoff. Opening the throttle part way would help flow more air thru the cylinder to evaporate it at startup.
Old Jul 12, 2004 | 01:52 PM
  #3  
n2ceptor's Avatar
Registered User
 
Joined: Sep 2002
Posts: 3,456
My car is the same way.. Some mornings it starts right away, and other times it doesnt.... I just think its tempermental.....

And I have changed all the sensors....
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Fatdog2
LT1 Based Engine Tech
1
Feb 13, 2015 08:19 PM
Iamherefornow
LT1 Based Engine Tech
2
Jan 26, 2015 04:57 PM
bfmv13trivium
General 1967-2002 F-Body Tech
9
Jan 14, 2015 09:57 AM
Scottylt1
General 1967-2002 F-Body Tech
3
Jan 8, 2015 02:48 PM
AlaskaZ28
LT1 Based Engine Tech
9
Jan 1, 2015 12:30 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 07:02 AM.