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Original Message
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| Spark scatter. |
| By Dave Shoe - 03/13/2001 12:19:48 AM; IP 216.243.158.167 |
You've got crossfiring.
It could be caused by your cap, rotor, or spark plug wires.
Oh wait. If it only happens when you take your foot off the gas, it's an exhaust leak near the manifold. OK, it's not that.
There's a teeny chance it could also be from a blown head gasket between two cylinders (easy ID with a compression tester, as two neighboring cylinders will be low), but it's not. Still, a compression tes will also reveal whether you have badly recessed, cracked, or leaking exhaust valves.
I blame the wires, personally.
Still, the cap is cheaper, so pull it off and look for powdery crap inside it which tends to hang around the HV leads. This stuff is sorta conductive and can somtimes build-up to the point of causing problems. Also look for a crack or a black trail that resembles a crack.
Do the same with the rotor. Just sorta look at it like you know what you're doing. If it has a story to tell, you'll see it.
Put the combo back on and see if it helped. Don't tell me the answer, yet.
Next, try moving every wire to a different cylinder, and maybe do it so that no two neighboring wires remain neighbors after it's over. It doesn't really matter how you do it, just so long as you unclip them from the hangers so they flop around differently than before.
Now try driving again and see if it helps. Again, keep the answer a secret - for now.
Next, go to the nearest NAPA dealer and get their cheap set of FE-compatible plug wires (their cheap stuff is made of highly satisfactory BELDEN wire. Their better stuff is more than you need, and the wrong color, too). Also buy their cap and rotor.
If a NAPA ain't near by, go to a dealer which sells quality auto parts, not a big franchise that just sells flashy looking stuff in artsy packaging - I've gotten too many bad sets (that crossfire right out of the box) of "latest-hype" brand wires to even play that game anymore.
Now replace everything you just bought., because it was all old and worn out anyway.
Now, take your truck out for one last test drive. At this point I don't wanna know if it helped, because if you spent the money, it damn well better have worked or you're just gonna yell at me.
Shoe. |
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