Engine & Transmission Post your Engine and Transmission related problems here.
Sponsored by:
Sponsored by:

need help. cant get to start and back firing though intake

  #1  
Old 09-21-2011, 01:49 AM
Starting Member
Thread Starter
Join Date: Sep 2011
Posts: 1
tylerbrewer is on a distinguished road
Cool need help. cant get to start and back firing though intake

i have a 2000 s10 blazer wit a motor out a 96 in it. It started making this weird thumping sound out of the exuast not like a back fire its a thump and when i was try to start it, it was doing some kind of back firing thing from the intake where it sucks air in i put a new fuel pump on it and a new rotor button i dont no what else to try?
 
  #2  
Old 09-21-2011, 01:57 AM
chris015's Avatar
BF Veteran
Join Date: Apr 2009
Location: South Carolina
Posts: 3,748
chris015 has a spectacular aura aboutchris015 has a spectacular aura aboutchris015 has a spectacular aura about
Default

Check the timing?
 
  #3  
Old 09-23-2011, 01:00 AM
FsTFwRd's Avatar
Junior Member
Join Date: Sep 2011
Location: Charlotte, North Carolina
Posts: 274
FsTFwRd is on a distinguished road
Default

Cat converter, fuel pressure regulator, fuel filter, Injectors, bad gas? These could also be your problem.
 
  #4  
Old 09-23-2011, 09:27 AM
BF Veteran
Join Date: May 2011
Location: SW Central OH
Posts: 2,252
pettyfog is a jewel in the roughpettyfog is a jewel in the roughpettyfog is a jewel in the rough
Default

Originally Posted by tylerbrewer View Post
i have a 2000 s10 blazer wit a motor out a 96 in it. It started making this weird thumping sound out of the exuast not like a back fire its a thump and when i was try to start it, it was doing some kind of back firing thing from the intake where it sucks air in i put a new fuel pump on it and a new rotor button i dont no what else to try?
I assume it ran good at some time then started acting up. Why did you change fuel pump? Was it for this problem?

Changed rotor but not cap? If the rotor was trash, the cap usually is as well. That can lead to crossfire with those symptoms.. as can installng plug wires wrong.

What happened at the time just before this started? It sounds like either timing or a more basic engine problem.

Seriously, at this level, I dont think you're going to be able to solve it without up close and personal help.
 
  #5  
Old 10-12-2011, 08:18 PM
RIFLEMAN 308's Avatar
New Member
Join Date: Feb 2010
Posts: 74
RIFLEMAN 308 is on a distinguished road
Default

check the crank position sensor and the connector going to it, i mean the terminals inside the connector that is, the tend to spread apart slightly over time causing the socket to fail to make contact with the pin on the sensor, believe me i had the same exact thing happen to me, 3 hours of testing wiring all the way up to the controller and beyond ( IN THE RAIN!!! YEAAA!!!)
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
97olered
2nd Gen S-series (1995-2005) Tech
1
06-24-2013 01:00 AM
cdw78
2nd Gen S-series (1995-2005) Tech
22
07-23-2011 07:56 AM
mattnew4
Engine & Transmission
9
12-19-2010 05:47 PM
lilgene21
Engine & Transmission
4
08-18-2010 02:50 PM
olenmarmcr
Engine & Transmission
1
10-06-2007 11:10 PM


Thread Tools
Search this Thread
Quick Reply: need help. cant get to start and back firing though intake


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.