Problem after spark plug change - MustangForums.com

Go Back  MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang
Reload this Page >

Problem after spark plug change

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Problem after spark plug change

Reply

 
 
 
Old 12-19-2010, 12:50 AM
  #1  
Pubydingus
1st Gear Member
Thread Starter
 
Join Date: Aug 2009
Location: Washington
Posts: 62
Question Problem after spark plug change

After i got my plugs in and checked and re checked conections and tightness of bolts there seems to be a problem... Holding RPM's at any range for ex. 2200, 4100, 1400, instead of begin smooth it misses/ sputters/ skips/ like instead of sounding like buuuuuuuuuuuuuuuuuuuuuuuuuuuu it sounds like buuuuuuuuuu da da buuuuuuuuuu da da da buuuuuuuuu da... when im driving its FINE and idles FINE too? is it some sort of sensor or bad coil pack? it was running fine before. and the plugs are the BOSCH 4 way ones that dont require gap
Pubydingus is offline  
Reply With Quote
Old 12-19-2010, 09:28 AM
  #2  
uberstang1
Chupacabra
 
uberstang1's Avatar
 
Join Date: Jul 2004
Location: wilkes-barre PA
Posts: 9,615
Default

Are you referring to the platinum boch 4 prong plugs? I've heard alot of people say not to use a platinum plug but I really dont have any expereince with them. How does a plug not require a gap? Do you mean there pre-gapped to factory specs?
uberstang1 is offline  
Reply With Quote
Old 12-19-2010, 10:02 AM
  #3  
cliffyk
TECH SAVANT
 
cliffyk's Avatar
 
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,932
Default

After triple checking all electrical connections disturbed during the plug installation (probably just the MAF) and hoses, the next thing I'd do would be to get rid of the "magic" spark plugs and get a set of Motorcraft (AWSF-32P) of Champion (stk #: 3401). These are both single platinum plugs, OEM and OEM equivalent, and all that are needed for maximum performance in any n/a 4.6 2V.

I run the Champions and they got me to 262/305 rwHP/tq with no problems at all. The silly 4-side electrode Bosch plugs horribly shroud the spark and are mostly a marketing gimmick--I mean heck, four electrodes has got to be better than one, right?.
cliffyk is offline  
Reply With Quote
Old 12-19-2010, 02:18 PM
  #4  
fidelcastrol
2nd Gear Member
 
fidelcastrol's Avatar
 
Join Date: Feb 2010
Location: King, NC
Posts: 206
Default

Those Bosch plugs are only half way decent in engines that are burning oil cause it takes longer to foul the plug.
fidelcastrol is offline  
Reply With Quote
Old 12-19-2010, 02:36 PM
  #5  
watman02
2nd Gear Member
 
watman02's Avatar
 
Join Date: Aug 2009
Location: Ia
Posts: 190
Default

get rid of the bosch ones and get oem(motorcraft) by the way champions should only be used in lawmowers, weed trimmers and dirt bikes...etc. there is no manufature I have seen or worked on that uses champions NGk are also good but the Bosch platnum 4 are worthless.
my 2 cents.
watman02 is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ShaneB26154
4.6L (1996-2004 Modular) Mustang
34
05-15-2016 09:30 AM
1st 4 eyed fox
General Tech
2
08-24-2015 06:56 PM
overnight89
4.6L General Discussion
6
08-22-2015 09:02 PM
microgt
V6 (1994-2004) Mustangs
2
08-20-2015 07:12 AM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory