High RPM Miss
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From: Tomball Texas
High RPM Miss
I've got a high RPM miss that I "think" may be related to the spark plug wires. Currently I'm using the cheapy wires from the local parts store. I've seen (and will search) that some guys are using a set of GM Performance Parts wires which usually run about $60. Any ideas if a better set of wires will solve the issue? If not, do you have any ideas?
Troy
Troy
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From: Tomball Texas
It was first noticed on the dyno at around 6500 rpm. Sometimes it's perfectly fine, other times it'll miss.
This is a C5 Z06 with an LS2 shortblock, L92 heads, LS3 intake/TB/injectors/rails, custom cam 236/244ish, long tubes, catless X.
Currently using NGK TR5 plugs gapped at .045
The tuner didn't say anything about it posibly being a fuel issue, just commented that it may be an ignition issue, which was rare in these cars.
It could be fuel, but I don't know for sure.
Troy
This is a C5 Z06 with an LS2 shortblock, L92 heads, LS3 intake/TB/injectors/rails, custom cam 236/244ish, long tubes, catless X.
Currently using NGK TR5 plugs gapped at .045
The tuner didn't say anything about it posibly being a fuel issue, just commented that it may be an ignition issue, which was rare in these cars.
It could be fuel, but I don't know for sure.
Troy
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Joined: Oct 2009
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From: North Las Vegas NV
Water
Wait till night time and raise the hood and fill a plastic spray bottle with water. Just spray the wires and see if they start to arc. It's a quick easy test with no cost to you. It may show you the problem without spending a bunch of time on it. It's just a quick check.
Drifting
Joined: Jan 2008
Posts: 1,283
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From: Akron Ohio
I posted on LS1tech also. My friend had the same problem on his F-body. He had a cracked coil. Something to look at, especially if its an intermittent problem. By the way he ran a 12.80 on 7 cylinders a couple of time then scattered his motor.
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Joined: Oct 2009
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From: North Las Vegas NV
You could possibly find this problem the same way with spraying water.
