Rusty spark plug... what can i do?? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > General Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

General Tech Have a question that is not covered by one of the other categories? This is the forum for all other items not specifically covered in other categories.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 06-21-2006, 16:20   #1 (permalink)
tup
Toni
 
Join Date: Oct 2004
Location: New Zealand
Age: 39
Posts: 13
Rusty spark plug... what can i do??

went to replace my plugs and couldn't get the last one out (no.6? closest to firewall)? ended up piling crc down the plug and undoing then doing up again until it finally broke free. totally covered in rust about 5 mls up from the bottom of the plug and now i have a slightly cross threaded spark plug chamber. (new plug went in ok though). pulled out plug two week later and already rust starting to build up again and plug was already rounding off at point... what could this possibly be??? car runs beaut usually.. doesn't miss or fart around .. it's on lpg whether that makes a difference?
thanks again
tup is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-21-2006, 16:24   #2 (permalink)
Conan
 
Join Date: Nov 2004
Location: Tasmania
Age: 40
Posts: 124
Re: Rusty spark plug... what can i do??

Thinking head gasket maybe, with water in chamber...
__________________
BA GT-P owner and loving it!
conan is offline   Reply With Quote
Old 06-22-2006, 05:00   #3 (permalink)
NB & NCII V8 Fairlanes
 
Join Date: Feb 2001
Location: Bibra Lake Western Australia
Posts: 2,880
Re: Rusty spark plug... what can i do??

Water in the cylinder results in clean shiny plugs not rusty ones. Are you sure it's not MMT (Methycyclopentadienyl Maganese Tricarbonyl) that gives a rusty appearance on the insulator and side electrode. See http://www.classictruckshop.com/club...park/plugs.htm or http://www.nightrider.com/biketech/spkplghnbook.htm#Redor http://www.ngksparkplugs.com/techinf...q/faqread2.asp
__________________
Regards Blue
Aussiblue is offline   Reply With Quote
Old 06-24-2006, 02:24   #4 (permalink)
tup
Toni
 
Join Date: Oct 2004
Location: New Zealand
Age: 39
Posts: 13
Re: Rusty spark plug... what can i do??

pretty sure it isn't that ausieblue.. as it is the whole thread rusted out.. not the actual electrode etc....?? relief about the head gasket though.. :) even though that is probably due to happen soon with the mileage.
tup is offline   Reply With Quote
Old 06-24-2006, 02:29   #5 (permalink)
tup
Toni
 
Join Date: Oct 2004
Location: New Zealand
Age: 39
Posts: 13
Re: Rusty spark plug... what can i do??

just had a big read on MMT and it wouldn't apply if i'm using LPG would it?? when i went to get a new plug the parts guy said i've been running the wrong plugs and gave me the right ones for lpg.. maybe that was the problem?? will check them again in a fortnight. thanks heaps guys
tup is offline   Reply With Quote
Old 06-25-2006, 07:59   #6 (permalink)
Registered User
 
jas24zzk's Avatar
 
Join Date: Jul 2005
Location: Wandin, Vic
Age: 42
Posts: 827
Re: Rusty spark plug... what can i do??

G'day,
aluminium head....hard to generate rust between it and the plug.....

Makes me ponder if the thread hasn't previously been damaged, and a helicoil has been used to repair it....most likely done in car.

Cheers
Jas
jas24zzk is offline   Reply With Quote
Old 06-25-2006, 16:17   #7 (permalink)
tup
Toni
 
Join Date: Oct 2004
Location: New Zealand
Age: 39
Posts: 13
Re: Rusty spark plug... what can i do??

that's clever thinking jas.thanks for that. would i not be able to see the helicoil if there is one? I'll have to get that thread redone.. as it is going to be an ongoing problem by the looks. Had a squizz at the manual and it advised putting anticorrosion grease on the ends of the plugs when changing.. maybe it is a problem with the EAs? if it weren't for the lpg on this, i'd be getting an update.... a few things are starting to pack up.. but fuel prices are too awful here at the moment..
tup is offline   Reply With Quote
Old 06-26-2006, 07:03   #8 (permalink)
Registered User
 
jas24zzk's Avatar
 
Join Date: Jul 2005
Location: Wandin, Vic
Age: 42
Posts: 827
Re: Rusty spark plug... what can i do??

G'day,
it was merely an idea...steel on steel creates rust.
Yes you will be able to tell if it has had a helicoil....simply compare the plug hole to another...look for differences...you should be able to see the helicoil

Cheers
Jas
jas24zzk is offline   Reply With Quote
Old 06-30-2006, 06:32   #9 (permalink)
old B - new B
 
351cid's Avatar
 
Join Date: Jul 2005
Location: sunshine coast QLD
Age: 50
Posts: 890
Re: Rusty spark plug... what can i do??

on my old XF ute i had a rusty number 6 plug and it was caused by the alloy head was eaten out between the water jacket and the cylinder, making it leak past the head gasket.
had to get the head welded up , fixed the problem and cost about $250 with a valve grind .
it would miss a bit when it was cold then be fine,
__________________
dave
`75 XB FAIRMONT SEDAN injected 351, toplaoder, disc brake 9", factory paint+ vinyl roof.
`03 BA XLS ute - lpg, auto, lsd, acid rush paint,
WWW.sunshield.biz
351cid is offline   Reply With Quote
Old 07-06-2006, 05:54   #10 (permalink)
Registered User
 
Join Date: Jul 2002
Location: melbourne
Posts: 249
Re: Rusty spark plug... what can i do??

I have a "slightly" blown head gasket, and also enjoy a "rusty" plug, but it's never hard to get out
creature3 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > General Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 17:07.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.