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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Misfire problem after a sparkplug change » Post Reply

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paul_spurrell

 posted on 7th Mar 03 at 22:07

it would be the gap. they are not peset


Dan

 posted on 7th Mar 03 at 18:33

quote:
Originally posted by ffls
until I broke a valve at 138mph!!!!!


u sure its ure spark plugs and nothing else is damaged???

just a guess

xhale


Mikorsa16v

 posted on 7th Mar 03 at 17:14

:/ try re-feeling the gap maybe!? worth a long shot


ffls

 Icon depicting mood of post posted on 7th Mar 03 at 17:08

The gap is preset in all twin electrode vauxhall/bosch plugs!!
And I'am sure they are the correct reference!!!
K+N platinum spark plugs also worked great until I broke a valve at 138mph!!!!! (due to weak mixture)
This is really strange because it used to work well until that point


Mikorsa16v

 posted on 7th Mar 03 at 17:05

what do u mean colder? where they matched for your car?
try tightening them up a little (not too tight other wise they wont come out again), try pushing the lead on as far as it will go onto the plug, and before any of that u wanna adjust the gap exactly, get a feeler gauge from halford if u dont have one, the plugs are not set when they come out of the packet as they could be used of a number of cars

HTH


Corsa^Dan

 posted on 7th Mar 03 at 17:02

Gap?


ffls

 Icon depicting mood of post posted on 7th Mar 03 at 16:59

After two spark plug changes, using original bosch spark plugs(GM), I got engine misfires at low revs....????!!!!
Using NGK spark plug (a bit colder than the originals) the problem almost dissapeared!!!!!
Any Ideas??????