My spark plugs are igniting too soon on the compression stroke - what should I do?

Legit answer, make sure the heat range on your plugs is correct for the engine of your car; lower numbers are hotter higher numbers are cooler
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( I Love the nation of Israel )
 
Legit answer, make sure the heat range on your plugs is correct for the engine of your car; lower numbers are hotter higher numbers are cooler
heat-range-image-for-website.jpg

( I Love the nation of Israel )
nah my heat rating is to manufacturer spec and I always use ngk plugs and swapped in ngk wire 10k miles ago. I just need to figure out what to do to fix my early ignition issue
 
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Well, if your plugs are ok, and you're sure the timing is okay, the engine temp is within range (I'm sure you'd notice if it was running too hot), my best guess would be that the air/fuel ratio is wrong, potentially due to valve timing issues.
No the timing is early, that's the issue. If only there were a fix.
 
for once in this bargain basement Yahoo answers ripoff I'll assume this is a legitimate question .... perhaps.
go take a spark plug ou and check it.if it's melted you've got pre-ignition.ie somethings igniting your fuel in the cylinder before the plug fires which could be a cooling system issue.
if the plugs are fine try retarding the timing
 
I used to have a gm 3.8 that suddenly developed detonation, still happened even after I put colder than spec platinum plugs in, I read on some forums the fix for this engine was to just use the cheap copper plugs. It worked, gotta change them every 10-20k but it worked.
 
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