Freaking tell me about it. Lol. Have has two obs trucks and both said the same thing when the distributor crapped out.Always cylinder #5...
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Freaking tell me about it. Lol. Have has two obs trucks and both said the same thing when the distributor crapped out.Always cylinder #5...
Always cylinder #5...
Ozone,moisture, crankcase gasses, nitric acid...would affect EVERY terminal in the cap, not just #5.The formation of ozone, moisture and crankcase gases all find their way inside the cap. The combination of these compounds with humidity create nitric acid. This is what's eating up cap parts.
RFA? Do you mean Radio Frequency Interference (RFI)?Just adding ACDelco spark plug wire information. New wire wound plug wires measure 1K ohms total, while the carbon filament type wire measure 12k ohms per foot. These new one deliver 25% more voltage while keep RFA down.
Nothing wrong with NGK, as long as you have the correct plug for the application.I swapped the plug (NGK) out of curiosity with a new one i had spare and viola...... No misfires. Drove it about 8 miles, didn't log (or feel) a single misfire.
I always thought NGK was a good brand for Chevy but not in this truck.
Nothing wrong with NGK, as long as you have the correct plug for the application.
If it was a matter of "NGK is not compatible with this truck" the other seven cylinders would complain, too.
There's something wrong with THAT spark plug. Inspect it carefully, figure out what happened.
Fouled?
Cracked insulator?
Loose conductor inside the ceramic?
Worn?
Gapped wrong?
Something else?
I'd still test the plug wire and the cranking compression.
Not only that but ac Delco plugs are reboxed from 3 other manufacturers. Ngk, champion, autolite depending on what plug it is. Iirc ngk makes all the ac iridium, and it’s a mix of the 3 for the copper and platinums.