My car likes to eat spark plugs - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 04-21-2013, 05:46 PM   #1
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
My car likes to eat spark plugs

Just that. My car eats them for lunch. A couple of months ago I replace my spark plugs. Everything was fine and then the car threw the SEL at me and showed that cylinder #1 was misfiring. Didn't think much of it so I kept driving with my car bogging down and popping every once in a while. So 2 weeks ago it started bugging me. I went and replaced the #1 plug and checked a couple of them as well. Of course they were pretty fine but #1 was melted. An also some of the plugs had oil in them. what could have caused that? So anyways, I cleared the code and last week it started misfiring again and the SEL lit up again with the same code. So I'm going to replace the wires and plugs today.

What could cause my car to eat up my plugs? And should I be worried about oil on my plugs?
One last thing, what plugs should I use? Can I use the MSD ones from autozone or are they crap?
sam62893 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-21-2013, 06:44 PM   #2
Registered Member
Regular
 
fastmustangs1's Avatar
 
Join Date: Oct 2004
Posts: 541
wat plugs you running now. Try the Motorcrafts!
__________________
fastmustangs1 is offline   Reply With Quote
Old 04-21-2013, 06:44 PM   #3
Registered Member
Regular
 
Ghostedmind's Avatar
 
Join Date: Aug 2011
Location: Huntsville
Region: Alabama
Posts: 918
Send a message via Skype™ to Ghostedmind
First off, i've always heard that Motorcraft coppers are the best for our engines, with the autolite copers being a close second. In your case, for now, I would ONLY replace with those because they are also some of the cheapest ones. (saves you a little cost on plugs if you are chewing them up)

Second, the oil on the plugs could be from a couple things from a blown head gasket to worn piston rings. AND if i'm correct, oil on your plug when it fires could cause it to burn up like that.
__________________
Redfire '04 V6 - K&N CAI, Divorced duals, Bama Tune, EGR Delete, Gauge cluster LED overhaul.

LCMC Member
Ghostedmind is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-21-2013, 07:26 PM   #4
Registered Member
Regular
 
Tyoung68's Avatar
 
Join Date: Jun 2011
Location: concord
Region: California
Posts: 3,475
Or your valve seats are bad
Tyoung68 is offline   Reply With Quote
Old 04-21-2013, 09:42 PM   #5
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
Quote:
Originally Posted by fastmustangs1 View Post
wat plugs you running now. Try the Motorcrafts!
I'm currently running the motorcraft coppers. I'm going to replace them with motorcraft coppers again and a new wire set as well

---------- Post added at 09:41 PM ---------- Previous post was at 09:41 PM ----------

Quote:
Originally Posted by Ghostedmind View Post
First off, i've always heard that Motorcraft coppers are the best for our engines, with the autolite copers being a close second. In your case, for now, I would ONLY replace with those because they are also some of the cheapest ones. (saves you a little cost on plugs if you are chewing them up)

Second, the oil on the plugs could be from a couple things from a blown head gasket to worn piston rings. AND if i'm correct, oil on your plug when it fires could cause it to burn up like that.
The car runs fine, just misfires every once in a while. Doesn't overheat or anything

---------- Post added at 09:42 PM ---------- Previous post was at 09:41 PM ----------

Quote:
Originally Posted by travisb.young66 View Post
Or your valve seats are bad
Valve seats, ill check it out
sam62893 is offline   Reply With Quote
Old 04-21-2013, 09:45 PM   #6
It's not me, it's you.
Regular
Supporter
 
primer2tone's Avatar
 
Join Date: Dec 2010
Location: Corpus Christi
Region: Texas
Posts: 6,752
Quote:
Originally Posted by travisb.young66 View Post
Or your valve seats are bad
I'd put my money there. That's the most common seal to fail before rings and head gaskets.
primer2tone is offline   Reply With Quote
Old 04-22-2013, 01:00 AM   #7
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
Quote:
Originally Posted by primer2tone View Post

I'd put my money there. That's the most common seal to fail before rings and head gaskets.
Would they be easy to replace or would I have to take it to a shop? I have SOME mechanical expertise but in no way am I a master tech, I'm still studying.
sam62893 is offline   Reply With Quote
Old 04-22-2013, 01:04 AM   #8
Registered Member
Regular
 
Tyoung68's Avatar
 
Join Date: Jun 2011
Location: concord
Region: California
Posts: 3,475
You would have to take it some where they machine the old seats out and press new ones in and machine them for your valves
Tyoung68 is offline   Reply With Quote
Old 04-22-2013, 02:54 AM   #9
Registered Member
Regular
 
tc x 4's Avatar
 
Join Date: Jan 2012
Region: Indiana
Posts: 3,783
Quote:
Originally Posted by travisb.young66
Or your valve seats are bad
My moneys on valve seals, seats usually cause a lose of compression.
tc x 4 is offline   Reply With Quote
Old 04-22-2013, 03:04 AM   #10
Registered Member
Regular
 
tc x 4's Avatar
 
Join Date: Jan 2012
Region: Indiana
Posts: 3,783
Several things could cause the plugs to melt.
Here are just a few, timing advanced to much, a/f mix to lean, intake manifold leaking.
tc x 4 is offline   Reply With Quote
Old 04-22-2013, 03:23 AM   #11
It's not me, it's you.
Regular
Supporter
 
primer2tone's Avatar
 
Join Date: Dec 2010
Location: Corpus Christi
Region: Texas
Posts: 6,752
Before you start changing things, I'd suggest a compression test. That'll rule out a lot of possibilities.
primer2tone is offline   Reply With Quote
Old 04-22-2013, 03:28 AM   #12
Registered Member
Regular
 
tc x 4's Avatar
 
Join Date: Jan 2012
Region: Indiana
Posts: 3,783
Quote:
Originally Posted by primer2tone
Before you start changing things, I'd suggest a compression test. That'll rule out a lot of possibilities.
+1, that's a good place to start along with checking timing.
tc x 4 is offline   Reply With Quote
Old 04-22-2013, 03:32 AM   #13
It's not me, it's you.
Regular
Supporter
 
primer2tone's Avatar
 
Join Date: Dec 2010
Location: Corpus Christi
Region: Texas
Posts: 6,752
Quote:
Originally Posted by tc x 4 View Post

+1, that's a good place to start along with checking timing.
Yeah, timing would have been my next suggestion. Even a little slack on the chain can cause serious problems.
primer2tone is offline   Reply With Quote
Old 04-22-2013, 03:36 AM   #14
Registered Member
Regular
 
tc x 4's Avatar
 
Join Date: Jan 2012
Region: Indiana
Posts: 3,783
A step colder plug will help if oil is getting on the plugs causing them to over heat.
tc x 4 is offline   Reply With Quote
Old 04-22-2013, 07:51 AM   #15
Registered Member
Regular
 
sam62893's Avatar
 
Join Date: Jul 2012
Location: Colton
Region: California
Posts: 2,029
I already got my plugs and wire set so I'm changing that regardless. Ill run a compression test to be sure as well. I'm not going to dump anymore money in this car though. I'm just going to sell it. Tranny going bad and this while spark plug deal is killing me. I'm trading my other car soon for an 02 V6
sam62893 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

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 Off
Pingbacks are On
Refbacks are Off


» Like Us On Facebook



11:26 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.