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Power surging, as far as I can tell?

982 views 4 replies 2 participants last post by  RayVoy  
#1 · (Edited)
1993 chevy s10, 2.8L v6, 5speed, 141k miles

*New Spark plugs, plug wires, distributer cap, rotor, coil, alternator, ignition control module.*

Edit: Also, after rolling down the windows, I can hear a loud popping noise. It sounds like its coming from the engine bay, not as loud as a backfire out the tail pipe i believe.

Edit: Maybe surging is not the best way to explain it come to think of it, it's more like a violent jerk.

Hey guys, back with another problem. So my truck has been recently "surging." That's the best way I can describe it. Basically the idle is okay, but every now and then when I give it gas while I'm driving, most usually when I go up a hill or press the gas pedel down farther than like half way, the truck kinda instantly slows down for a second or two then goes back to normal, and I can smell something odd for a couple seconds after it happens. I cant place the smell, maybe electrical? Sometimes it will do it 3 or 4 times in a row then back to normal like it never happened. Like I stated, it happens quite a bit, enough to cause a concern. It's quite scary when it happens. I'm trying to explain it the best I can think of. I feel like it's a fuel issue, maybe my fuel pump. Its been doing it for like a month now. I replaced the fuel pressure regulator with a new one like 5 months ago. THANKS!
 
#4 ·
Problem has been solved. What it was? One spark plug wire. Here's what happened, when I changed my old plugs, when I went to pull the wire off the plug, the inner metal "tube" that secures to the metal prong of the spark plug ripped out of the wire housing. I've had it happen before so I just shoved it back in there. BAD. This happens when you don't apply a little dielecric grease, or spark plug grease before installing, especially on older vehicles like mine. I discovered this after realising it was a burnt electric smell when the engine popped. So I pulled all the plugs and noticed one of the silver cylinders was in fact black/dark grey. The reason for this is because every time I shoved the cylinder back into the housing, it would push the wire further into the housing, thus creating a situation of the wire not fully contacting the cylinder which in hand creates "eletrical arcing" which explains the burnt electrical smell and the blackness of ths normally shiny silver part. It seemed that only one of the plugs was effected by this. So lesson learned and hopefully taught here!? Use that grease! But don't over do it, a little grease goes a looong way. Cheers!