Spark plug wires question
Konstantin Bogach
konstantin.bogach at morganstanley.com
Fri Dec 26 12:45:14 EST 2003
Phil, forgive me my ignorance. I never saw a plug cap apart from a wire so
for me it is one piece.
Can I take them apart and connect back without special equipment? Do you
ever take a wire apart to measure resistance of a wire and a plug cap?
Do you ever replace them separately?
Thank you.
Konstantin.
Phil Payne wrote:
> > To my surprise I discovered that my two 200tq have different resistance
> > of spark plug wires. Both Bosch with loom, but one has ~6200 Ohm and
> > another ~5000 Ohm. The spec per Bentley is 5 KOhm. The car with ~6
> > KOhm wires has good spark. Spark tester measures 20 KV on coil wire and
> > 10-14 KV next to spark plug. The car with right (5 KOhm) wires has low
> > KV on the coil wire (coil or power stage is a suspect) so I can not
> > compare KVs measured next to plugs on two cars.
>
> My understanding is:
>
> Distributor cap - 1kOhm
> Wire - 0kOhm
> Plug cap - 5kOhm
>
> --
> Phil Payne
> http://www.isham-research.com
> +44 7785 302 803
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