Go Back   Blazer Forum - Chevy Blazer Forums > Mechanical & Maintenance > Engine & Transmission
Sign in using an external account
Register Forgot Password?
Search


Welcome to Blazer Forum!
Welcome to Blazer Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Blazer Forum today!


Closed Thread
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-19-2008, 08:04 PM
 
Join Date: Jul 2007
Posts: 48
newguy07 is an unknown quantity at this point
Default Spark Under Hood?

1995 chevy s10 blazer 4.3 4x4

Ok guys I have been troubleshooting on here for a couple days and i know your probably tired of me lol

I have not been able to make it to an auto store to get plugs and wires, cap and rotor yet because they were closed when i was off work

one of the guys at works said to look under the hood in the dark with the motor running and if you see blue sparks then you have bad wires, so i did and i see blue on the back drivers and passengers side and also around what im assuming is the coil on the passenger side top of the engine?

im not sure if its a coil but it has wires plugged into it and is electronic and its got blue sparks around it?
__________________
I am new to this forum so any information on a 95 blazer is appreciated
  #2  
Old 02-19-2008, 08:17 PM
BF Veteran
 
Join Date: Jun 2006
Location: Vancouver. B.C. Canada
Posts: 3,429
Chevy Lover is a jewel in the roughChevy Lover is a jewel in the roughChevy Lover is a jewel in the rough
Default RE: Spark Under Hood?

Quote:
ORIGINAL: newguy07

im not sure if its a coil but it has wires plugged into it and is electronic and its got blue sparks around it?
How many wires and are they plug wires? Sounds like a distributor cap if it's round and has 6 plug wires and a coil wire.
__________________

Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time

The '74 Blazer convertible, new exhaust
http://www.youtube.com/user/hdharley.../9/BZySHHznFTs
  #3  
Old 02-19-2008, 08:27 PM
 
Join Date: Jul 2007
Posts: 48
newguy07 is an unknown quantity at this point
Default RE: Spark Under Hood?

the wires that are sparking blue are definitely plug wires ran behind the engine but the box that i was talking about is not the distributor or i would recognize that

it is a squar or rectangle box about 2"x4" or so with a wiring harness running into it and a couple wires out the back and its on like a silver heat sink type thing. Could it be the coil?
__________________
I am new to this forum so any information on a 95 blazer is appreciated
  #4  
Old 02-19-2008, 08:29 PM
BF Veteran
 
Join Date: Jun 2006
Location: Vancouver. B.C. Canada
Posts: 3,429
Chevy Lover is a jewel in the roughChevy Lover is a jewel in the roughChevy Lover is a jewel in the rough
Default RE: Spark Under Hood?

That is the coil.
__________________

Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time

The '74 Blazer convertible, new exhaust
http://www.youtube.com/user/hdharley.../9/BZySHHznFTs
  #5  
Old 02-19-2008, 08:29 PM
c0a8l0v6i8n9's Avatar
Junior Member
 
Join Date: Jan 2008
Location: Long Island, NY
Posts: 296
c0a8l0v6i8n9 is an unknown quantity at this point
Send a message via AIM to c0a8l0v6i8n9
Default RE: Spark Under Hood?

sounds like the coil to me
__________________
1994 4 Door S10 Blazer, 4.3 VIN "W", 148,xxx miles, 6000K HID Lights, Fog Lights, Driving Lights, Pioneer DEH-3900MP, Infinity Kappa 462.7CFP, Kenwood KFC-1682ie.
  #6  
Old 02-19-2008, 08:35 PM
 
Join Date: Jul 2007
Posts: 48
newguy07 is an unknown quantity at this point
Default RE: Spark Under Hood?

should you be able to see blue sparks under the hood or is that because the plug wires are bad?
__________________
I am new to this forum so any information on a 95 blazer is appreciated
  #7  
Old 02-19-2008, 09:12 PM
 
Join Date: Jul 2007
Posts: 48
newguy07 is an unknown quantity at this point
Default RE: Spark Under Hood?

ok so i found some pics online and it is in fact the coil and i guess the wires are bad for sure but has anyone noticed if the coil sparks?
__________________
I am new to this forum so any information on a 95 blazer is appreciated
  #8  
Old 02-19-2008, 10:59 PM
Moderator
 
Join Date: May 2005
Location: Central Illinois
Posts: 3,891
Hanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond repute
Default RE: Spark Under Hood?

I have never seen a blue spark on a properly running engine, even in the dark.

Sounds like you found the parts that need replaced, verify that they are on correctly before you spend money on new ones. Spark pplug wires have a distributor end, and a spark plug end. Also use teh little clips that hold the plug wires away from the metal of the engine.
__________________
"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan

'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sold
'00 S10-Blazer 4x4x4 - 212,000 miles-Sold
'04 Trailblazer 4x4x4- 56,000 miles new DD.
  #9  
Old 02-20-2008, 01:49 AM
BF Veteran
 
Join Date: Jan 2007
Location: PHOENIX,AZ
Posts: 2,657
thegr81 is on a distinguished road
ryan thompson
Send a message via Yahoo to thegr81
Default RE: Spark Under Hood?

Blue spark = bad wires and also if you see the same blue spark coming out of the coil replace that too!!!
__________________
2001 2wd 4.3 vortec v6
"I'm not fat, I'm a minitrucker"

  #10  
Old 02-22-2008, 03:43 PM
 
Join Date: Jul 2007
Posts: 48
newguy07 is an unknown quantity at this point
Default RE: Spark Under Hood?

Ok guys so I actually had a day today when I could work on it and I got it done, I replaced the wires and cap and rotor. The weird thing is the distributor looks like a dang crab, the wire come out the side not the top like usual.

It is actually running better than it did when we got it with the exception that the check engine light has stayed on but I only drove it for about 10 minutes so im sure that will go off with a few drives

the coil turned out to be fine and the guy that tested it or did whatever they do with them lol said that the bad wires just grounded out and that is why everything was sparking
__________________
I am new to this forum so any information on a 95 blazer is appreciated
Old 02-22-2008, 03:43 PM
 
 
 
Closed Thread

Tags
94, 95, blazer, blue, chevy, coil, coming, engine, hood, plug, s10, sounds, spark, sparking, sparks, wires


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 12:26 PM.

Internet Brands, Inc.



SEO by vBSEO ©2010, Crawlability, Inc.