Dealing with seeming weak ignition for some time now. Suspected coil; not. Looked at plug wires and found lots of corrosion on 2 of 4 ends going into cap. According to records, only 2 years old. I failed to renew cap, rotor, wires, plugs 18 months ago upon purchase.

Time to do the above. went with bougicord wires. Noticed the 2-years old Bosch wires had different connections at cap; not tapered as Bougicord but cylindrical. Very curious was the length of the coil wire. The Bosch coil wire was 50% longer than the Bougicord.

Question: Could a longer than warranted coil wire cause week spark? Car seemingly does start more smartly
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89 240 wagon, 94 940, 200K, 94 940, 135K

Dear j.pelchat,

Hope you're well. Some plug wire kits come with two coil wires. The reason: on 940s - equipped with Bosch fuel/ignition management - the distributor may be mounted at the back of the camshaft (close to the coil), or next to the timing belt case (forward of the intake manifold, and so far from the coil).

A plug wire-maker may supply only the longer coil cable. The kit can be used on either version, but a buyer need not pay for a wire, that will not be used.

Hope this helps.

Yours faithfully,

Spook

"...longer wire...."

No. If one end was on the Moon maybe, but then it'd be hard to put the car in the garage.

I think the difference between the two wires may not be measurable, but perhaps in picoseconds.