Quote:
Originally Posted by blue62
I have never found a coil to be at fault where I could not detect the fault.
I have always been able to see physical damage, high Ohm's resistance, weak yellow spark. Or no spark.
That is over a period of 50+ years of playing with cars.
I have had very few coils fail.
Although in my old VW bug, heat from the engine was hard on them.
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My takeaway from this threat is no need to change coils as PM, as they can last long time and you will likely notice symptoms. It is my habit to change spark plugs routinely at much shorter interval as factory suggests, so I can read them to see health of combustion and detect weak spark, if I don’t feel it from driving,
My first car was a 73 VW bug and probably the very first thing I did for ‘performance’ upgrade was Bosch blue coil….. I guess I’m spoiled now, no need to adjust valve gap every 3K miles, adjust distributor point gap, set the timing with strobe light, fiddle with carburetors, etc….
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1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!
Last edited by Boxstard; 11-07-2021 at 12:50 AM.
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