Plug number 1 fouls regularly... is it an injector issue?

Asked by Dec 26, 2010 at 01:29 AM about the 2002 Mazda Tribute LX V6

Question type: Maintenance & Repair

No. 1 plug continues to foul while other plugs stay clean. Is this an injector issue, cylinder, or valve issue? What is the best way to prove this out?
Thank you!

5 Answers

55

sounds more like a piston ring issue. Or, more precisely, an oil control ring! sorry!

5,025

Check your plug against the plug chart at http://www.v6z24.com/mods/howto/images/plugs/plugs19.jpg Admittedly these are rather extreme examples but you can find an idea of where to look for the cause of your problem. An oily plug would imply oil is leaking into the cylinder from somewhere (either via the piston or a valve stem). If it's the oil ring on the piston you're in for a nice job, you're best off replacing the piston rings in the engine, which means pretty much an entire teardown. If on the other hand it's a valve stem seal, it's just a case of a bit of headwork. I'd recommend replacing the seals on all the valves or you'd be taking the head apart every few months to replace the next seal to start leaking.

105

I might think a injector would be the fault Have you checked the spark plug lead that its not breaking down under load other than electrical with the current to that particular plug I would get a compression test its possible that a piston ring is broken

4,555

actually it can be either faultu ignition system or a bad valve. u really need to get it checked thoroughly before u can reach to a conclusion. http://mazdatribute.net/mazda-tribute-stereo-removal-procedure/

25

if the plug is fouling with gasoline, I'd start thinking along the lines of Fuel Injector(s) or fuel pressure regulator....

Your Answer

Add photo

Related Questions

Tribute

Looking for a Used Tribute in your area?

CarGurus has 918 nationwide Tribute listings starting at $995.

ZIP:

Search Mazda Tribute Questions

Mazda Tribute Experts

#1 Tom Demyan
Tom Demyan
Reputation 980
#2 Js08016
Js08016
Reputation 220
#3 Reelin68
Reelin68
Reputation 200
View All

Related Models For Sale

Used Ford Escape
1,346 Great Deals out of 95,800 listings starting at $995
Used Honda CR-V
822 Great Deals out of 60,379 listings starting at $900
Used Toyota RAV4
645 Great Deals out of 70,828 listings starting at $2,350
Used Jeep Grand Cherokee
1,043 Great Deals out of 74,229 listings starting at $950
Used Jeep Liberty
254 Great Deals out of 7,338 listings starting at $990
Used Ford Explorer
830 Great Deals out of 75,041 listings starting at $1,200
Used Honda Pilot
350 Great Deals out of 21,187 listings starting at $2,199
Used Hyundai Santa Fe
270 Great Deals out of 19,726 listings starting at $500
Used Kia Sorento
409 Great Deals out of 33,265 listings starting at $1,495
Used Toyota 4Runner
281 Great Deals out of 20,895 listings starting at $1,995

Used Cars For Sale

2011 Mazda Tribute For Sale
23 listings starting at $4,900
2010 Mazda Tribute For Sale
4 Great Deals out of 32 listings starting at $6,795
2009 Mazda Tribute For Sale
19 listings starting at $4,995
2008 Mazda Tribute For Sale
117 listings starting at $2,999
2006 Mazda Tribute For Sale
136 listings starting at $2,995