Plug Fouling - 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 > Engine Specific Tech > Cleveland Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

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 11-21-2004, 13:43   #1 (permalink)
Registered User
 
Join Date: Nov 2004
Posts: 32
Plug Fouling

Anyone had experience with NGK Iridium plugs? ( or Bosch Super 4's), i'm having probs with plug fouling on worked 351c (ZH Fairlane). Would like to try the Iridium's, cost heaps though-are they worth it?
Tks guys in advance
alecz is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-21-2004, 13:59   #2 (permalink)
74 XB Fairmont
 
brenx's Avatar
 
Join Date: Sep 2001
Location: Cranbourne, Vic
Posts: 5,113
Re: Plug Fouling

what spec/part no plug are you running now? Try going 1 step hotter and leaning your idle mixtures off a tad. You'll be fouling them on start up and idle. I'd also change to an NGK V groove plug.

http://www.mzsimson.de/service/Bosch.htm

http://www.mzsimson.de/service/Champion.htm

Brenden
__________________
XB Fairmont (street car) 11.07@123.02mph.
brenx is offline   Reply With Quote
Old 11-21-2004, 19:40   #3 (permalink)
Registered User
 
northiam's Avatar
 
Join Date: Feb 2004
Location: Victoria. Australia
Posts: 381
Re: Plug Fouling

I was having the same trouble, I changed to a hotter NGK 6 plug @ $3.00 / plug and .8mm gap solved the problem.
northiam is offline   Reply With Quote
Old 11-21-2004, 19:52   #4 (permalink)
Registered User
 
Racer's Avatar
 
Join Date: Oct 2002
Location: Sydney
Posts: 992
Re: Plug Fouling

I'm with Brenx. Sort your carby out first. What type and size is it?

Unfortunately running hotter plugs isn't the way to go. That's addressing the symptoms, instead of curing the problem. Hotter plugs could also damage your engine.
Racer is offline   Reply With Quote
Old 11-22-2004, 01:19   #5 (permalink)
Registered User
 
Join Date: Nov 2004
Posts: 32
Re: Plug Fouling

[QUOTE=brenx]what spec/part no plug are you running now? Try going 1 step hotter and leaning your idle mixtures off a tad. You'll be fouling them on start up and idle. I'd also change to an NGK V groove plug.

http://www.mzsimson.de/service/Bosch.htm

http://www.mzsimson.de/service/Champion.htm

Brenden[/QUOTE ]

damn right, fouls at startup & idle! Running stock NGK BP5FS's at present (Holley 650 dp, AFD heads), not bad if I keep idle above 2000rpm, hotter plug could be the go, but would like to try NGK Iridiums UR51X's. Supercheap wants $28 each for them!, found some via Ebay (US) @ US$47 for 8, ok if they are better?
alecz is offline   Reply With Quote
Old 11-22-2004, 01:45   #6 (permalink)
Registered User
 
4vxc's Avatar
 
Join Date: Jun 2004
Posts: 397
Re: Plug Fouling

alecz,
dont go hotter than a 5, like they said get the carb sorted and check the ignition that will be the problem, like brenx said use a v grove plug. Supercheap dosent want $28 each tell them to order NGK's through coventrys as they are the cheapest supplier what store was that? Problem is the people working for them generally dont have a clue what they are talking about as there is no training provided in spare parts so its every man for himself when ordering parts. The sad part is I am working at Supercheap at the moment in spare parts and there is a lot of good gear available MSD, Crane, Ford motor sports ect but nobody knows what they are or how to order them at the "right" price
4vxc is offline   Reply With Quote
Old 11-22-2004, 01:58   #7 (permalink)
74 XB Fairmont
 
brenx's Avatar
 
Join Date: Sep 2001
Location: Cranbourne, Vic
Posts: 5,113
Re: Plug Fouling

5 is a very hot plug. You've got some serious carb and timing issues. If you've got a 6.5 powervalve? It maybe opening @ idle. You could have needle and seat issues as well. Especially if the carbs sat around dry after being used.

A $3 max NGK V groove plug is all thats needed. If you fouling any plugs? You'll also foul the iridiums. That'd get damn expensive.

I'd say your idle screws screwed too far inward and the butterflies are too far open, allowing the primary circuit to flow @ idle. I've been through the exact same thing.

Also make sure your running @ least 10 deg initial advance on the crank.

[edit]Hang on. Don't the AFD's use BCP5ES/BCP6ES/BCP7ES etc? As I am pretty sure a stock clevo's plug for a cast iron head doesn't reach far enough.

If the plugs not reaching into the cyl that'll definately cause the issues your having. The BCP plugs thread is twice as long as a stock clevo plug.

Brenden
__________________
XB Fairmont (street car) 11.07@123.02mph.
brenx is offline   Reply With Quote
Old 11-22-2004, 02:28   #8 (permalink)
Registered User
 
Join Date: Nov 2004
Age: 36
Posts: 57
Re: Plug Fouling

what is a good plug for a mild engine?
old falcon fan is offline   Reply With Quote
Old 11-22-2004, 02:36   #9 (permalink)
Registered User
 
4vxc's Avatar
 
Join Date: Jun 2004
Posts: 397
Re: Plug Fouling

brenx you are on the ball about the BCP?ES!

old falcon fan probably a BP6FS
4vxc is offline   Reply With Quote
Old 11-22-2004, 02:46   #10 (permalink)
74 XB Fairmont
 
brenx's Avatar
 
Join Date: Sep 2001
Location: Cranbourne, Vic
Posts: 5,113
Re: Plug Fouling

What he said ^^^^ A 6 or a 5 at worst. You'd usually find a 6 is perfect.

Quote:
Originally Posted by old falcon fan
what is a good plug for a mild engine?
__________________
XB Fairmont (street car) 11.07@123.02mph.
brenx is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Auto to manual conversion guide mongrelEB Trans | Driveline 79 12-18-2011 15:27
When will the CFI to MPI tutorial be posted?? jjj Inline 6 Tech 11 05-15-2004 13:46
Headlight plug keeps frying dont slow down Ford Ranger Forum 1 03-03-2004 16:14
plug and play ECU for EA to ED turbotrana Australian Falcons 19 11-04-2003 07:36
Manual conversion for 5ltr EB blueoval Trans | Driveline 13 06-03-2003 22:02

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 06:27.



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.