|
05-10-2003, 09:38 AM | #1 |
Junior Member
Join Date: May 2003
Location: Perth
Posts: 54
|
Residue Oil when Replacing Spark Plugs - Any Ideas?
Dudes, Noticed when I was changing spark plugs (from the standard Denso's to 6 lovely NGK Iridium IX's - they make a noticeable difference I have to add) that some of the old ones had a moderate layer of dark (does that mean old?) oil coating the threads. The tips of the plugs were clean, dry and grey however. I also noticed that a thin layer of what seems like 'fresh' oil lined the lower edges of the spark plug remover (where it brushes against the side) after I'd extracted it.
I expect this means that the rocker cover gaskets may need replacing? Am I on the right track with this one?
__________________
BA Astina Hatch V6 Classic Red |
Sponsored Links |
05-10-2003, 04:28 PM | #2 |
コスモ
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
|
I think you may be right. First I'd remove the valve covers and clean up the old oil and monitor the situation for a few thousand km before spending the $$$ on new gaskets.
I recently replaced my valve cover seal and distributor 'O' ring and was over $60 in parts. I have the BA 1.8 Rod
__________________
My 'stina Hatch |
05-10-2003, 04:45 PM | #3 |
Junior Member
Join Date: May 2003
Location: Perth
Posts: 54
|
$60 in parts? Was that through Mazda?
__________________
BA Astina Hatch V6 Classic Red |
05-10-2003, 07:29 PM | #4 |
Junior Member
Join Date: May 2003
Location: Perth
Posts: 54
|
Oh - another quick question. Will it hurt (cause any damage) if I don't have the gaskets replaced too soon? Finances are a bit stretched at the mo.
Also, what are the symptoms of a drop in compression?
__________________
BA Astina Hatch V6 Classic Red |
07-10-2003, 10:28 AM | #5 |
1ST BA TURBO MEMBER
|
Lack of performance !!! Both from the fact that the energy from the combustion
is not forcing the piston down but going around and past the rings and also from the pressure buildup in the sump that rises to the head and that air contains oil and then goes out the breather at the corner of rocker cover and into the air intake contaminating the airflow into the chamber. Regards Mal
__________________
If you want wind in your hair add a Hairdryer !!! |
07-10-2003, 04:07 PM | #6 |
Junior Member
Join Date: May 2003
Location: Perth
Posts: 54
|
Thanks heaps for that - performance is fine. I was just curious being as I'm a novice at all of this.
__________________
BA Astina Hatch V6 Classic Red |
07-10-2003, 09:33 PM | #7 |
コスモ
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
|
Best indication of a lack of compression would be a compression test
Take it one step at a time, clean the plugs and their holes. Oil in all of them makes me think that there was human intervention. Gasket failure would hit 1 of 6 not all at once. Why would someone pour oil into the plug holes? Your guess is as good as mine :shock: A good clean costs nothing but could potentionaly show the problem. Rod
__________________
My 'stina Hatch |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Funny things you've been sent lately... | Rupewrecht | Off Topic | 2682 | 16-05-2016 06:31 PM |
NGK Iridium Spark Plugs on v6 - help --> maybe just a simple answer | Noble323 | Performance & General Maintenance | 4 | 07-09-2005 04:17 AM |
GB: [QLD] NGK Iridium spark plugs - Another Twiggy Special! | twilightprotege | For Sale/Wanted | 174 | 05-02-2005 09:33 PM |
Oil in spark plugs | sirex | Performance & General Maintenance | 3 | 10-10-2004 11:35 PM |
FS : NGK Iridium Spark Plugs | twilightprotege | For Sale/Wanted | 17 | 14-09-2004 07:15 AM |