Subject	If you can definitely identify it as a knock
Posted by	-Grimm- on February 15, 2014 at 10:00 PM
	This message has been viewed 223 times.
In Reply To	Why does engine knock with a coil unplugged? posted by dvice on February 14, 2014 at 02:59 PM
Message	more accurately, a sort of pre-ignition, my first guess would be carbon deposits and/or the unburnt fuel igniting before/in the turbine with all the other hot exhaust gas. Try cutting the injector pulse to that cylinder also and see if it goes away. If it doesnt, you may be looking at one of the above problems, or possible: Beginning to lose a rod bearing Beginning to lose a wrist pin As stated above, possible loose machining clearances Have you checked the condition of your oil? ------------------------------------------------------------------ 1992 300ZX NA 5 Sp (Dead) 1990 300ZX NA Auto 2+2 (Dead) 1990 300ZX TT 5 Sp (Building) 2004 G35 Sport 6MT (DD)
Follow Ups	Why does engine knock with a coil unplugged? - dvice 14:59:09 02/14/14 Re: Why does engine knock with a coil unplugged? - TurbodreamZ 01:10:04 02/15/14 does it do that for any cylinder or just one? - Zvil (FL) 08:26:10 02/15/14 Wiseco pistons are typically set up with more - SirpriZ 17:47:44 02/15/14 I meant to add:especially when cold and - SirpriZ 18:09:56 02/15/14 If you can definitely identify it as a knock - -Grimm- 22:00:54 02/15/14
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