[Gmecm] Getting rid of False Knock?

Arthur Clampitt chopc
Wed Mar 23 22:23:06 UTC 2005


>50,000  knocks in 2 minutes is something like 1 knock for every spark event
>? maybe you got some crosstalk between HT and KS wiring, as suggested by a
>previous poster.  If re-routing the wiring does not work, you may have to
>use shielded cable as well 




I'd have thought shielded cable was an absolute must , twin core for the
signal with the shield only grounded at one end ( to prevent earth loops ) ,
It certainly soundslike you have am electrical cross talk , Especially if
you can't hear any  problem , Quick check for electrical cross talk might be
to remove the sensor and just run the engine with the sensor near it's
normal place with a short ground wire connecting the sytem up electrically
but not mechanically connected to the engine If there is no mechanical
connection to the engine ( and thus no noise transfer ) then if your "knock
" persists you have electrical cross talk !!  
Men will never be free until the last politician is strangled with the
entrails of the last priest ( Hopefully after they have just poisoned the
last spammer) 

With apologies to D. Diderot 1713-1784





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