Going to keep the as short as possible.
I bought the truck about a month ago, no knocking noise, drove it home, noticed it was overboosting so I didn’t really lay into it. The guy I bought it from was a jackass (should have noticed there would be a problem from the beginning)
He said the engine was just rebuilt? but with no papers. It has a full exhaust, headers, new stock turbo, MSD full ignition except wires, and he said the previous owner put in a cam (cant hear any loping at idle). I figured I would take it to my mechanic before really driving it hard, to do all the basics and go over the truck. I Used the truck a few times just driving normally maybe a hundred miles or so, hit boost a few times but as before never really drove it hard.
Now I have a knocking noise, and I’ve been searching here and tried ruling a few things out.
About the Knock: You can hear it from outside and inside the truck.
Sometimes it goes away completely.
It increases with revving.
Its not a loud clunking noise, but not an injector tick.
It doesn’t affect power.
I Checked the oil- looked a little dirty, asked the owner when it was changed and he didn’t remember? And said it wasn’t synthetic? :rant:
Oil pressure looks good based on the crappy gauge in the truck.
When I brought it to my mechanic to check the knock, what we did was pull each plug wire while the car was running: when we got to cylinder 2 on the passenger side, the knocking stopped.
He also said it does look like the engine was recently pulled.
He thinks it’s the wrist pin, and the previous owner put some additive in it to quiet it down. Does this sound right? Could it be anything else? It does I guess make sense that when you stop spark to that piston the noise stops.
Please help, my ass hurts from this whole deal.
I bought the truck about a month ago, no knocking noise, drove it home, noticed it was overboosting so I didn’t really lay into it. The guy I bought it from was a jackass (should have noticed there would be a problem from the beginning)
He said the engine was just rebuilt? but with no papers. It has a full exhaust, headers, new stock turbo, MSD full ignition except wires, and he said the previous owner put in a cam (cant hear any loping at idle). I figured I would take it to my mechanic before really driving it hard, to do all the basics and go over the truck. I Used the truck a few times just driving normally maybe a hundred miles or so, hit boost a few times but as before never really drove it hard.Now I have a knocking noise, and I’ve been searching here and tried ruling a few things out.
About the Knock: You can hear it from outside and inside the truck.
Sometimes it goes away completely.
It increases with revving.
Its not a loud clunking noise, but not an injector tick.
It doesn’t affect power.
I Checked the oil- looked a little dirty, asked the owner when it was changed and he didn’t remember? And said it wasn’t synthetic? :rant:
Oil pressure looks good based on the crappy gauge in the truck.
When I brought it to my mechanic to check the knock, what we did was pull each plug wire while the car was running: when we got to cylinder 2 on the passenger side, the knocking stopped.
He also said it does look like the engine was recently pulled.
He thinks it’s the wrist pin, and the previous owner put some additive in it to quiet it down. Does this sound right? Could it be anything else? It does I guess make sense that when you stop spark to that piston the noise stops.
Please help, my ass hurts from this whole deal.
