- Ford Mondeo Zetec NGK spark plugs Archived Message
Posted by Peter Warman
on January 10, 2004, 8:00 pm
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Hi All Just wondered if some of you have come across this recently, and a possible explanation My others half's Mondeo 1.8 Zetec 93 has had an intermittent stall when you are braking coming up to junctions for a few weeks, so i used it for a few days, and it is stalling about 3 times every journey, but not consistant. I carried out all the usual checks, but could not see anything obvious. I pulled the plugs out which have only been in about 5,000 miles, and thought i would put another set in from stock (out of desperation) The plugs i took out were NGK PTR5A-13, and the plugs we have in stock are PTR5A-10, which were supplied for this model. As i thought they were supplied wrong i rang the supplier, but they said that PTR5A-10 have replaced PTR5A-13. Obviously the PTR5A-10 have a smaller gap (1.0mm) as oppose to (1.3mm). Reluctantly i fitted them, but guess what!!....it cured the stalling Why do NGK now recommend a plug with a smaller gap?.....do they know something we don't The other strange thing is that if you look on the German NGK website, they still recommend the PTR5A-13, but if you look them up on the UK NGK website they recommend the PTR5A-10. Sorry for the long post, but its one of those little things that niggle's, without an explanation Peter
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......that was when i noticed
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