Driver side random engine knock in valve cover

[Psycho Mythic]

Very random, makes a hard knock sound once every 45 seconds to 2 minutes or so...I can even hear it cruising down the road, every few minutes or so, just one tap at a time.

Here's the kicker, I stopped and put gas in her and check the oil, and with the engine off and keys in my pocket, it did it three times in the time it took me to put gas in it, with the engine off and keys in my pocket!!! When its off sounds like the engine cooling and a random crack/pop, but no reason it should do that riding.

I'm thinking maybe an electronic at the back of the driver side valve cover? I'm stumped!

 

[Psycho Mythic]

Maybe a catalytic converter popping? The exhaust is RIDICULOUSLY hot when ya give it gas...

 

[trussman]

Prolly exhaust. Mine does it all the time. Has for the last almost 6 years now.

 

[Psycho Mythic]

Well I'm about to rip all the stock cats out and run 2 Magna flow high flows...

 

[Dom426]

Ditch the cats

 

[hawk02]

Go catless... I get that noise once in a while when warming up and when it's off cooling down.

 

[Psycho Mythic]

I'm about to be running custom side exhaust, no cats will be wicked loud, and probly shoot fire

 

[ViperCLKGTR]

I had the same sound when it started to get really cold outside, crawled under and it was coming from my front right cat.

 

[Psycho Mythic]

10-4, thanks for helping guys :rock:

 

[LitemUp]

Its probably the heat shields for the exhaust manifolds one or more of the tack welds let go. When it heats up the metal expands and makes a popping sound coming from the head area. I had the same thing happen to me with mine and found it was the heat shield.

 

[Dom426]

Its probably the heat shields for the exhaust manifolds one or more of the tack welds let go. When it heats up the metal expands and makes a popping sound coming from the head area. I had the same thing happen to me with mine and found it was the heat shield.

Good thinking!!!!

 

[Psycho Mythic]

Its probably the heat shields for the exhaust manifolds one or more of the tack welds let go. When it heats up the metal expands and makes a popping sound coming from the head area. I had the same thing happen to me with mine and found it was the heat shield.

Thanks bud I'll check it out!

 

[VENOMOUS1 RACING]

I second the heat shields as I've seen a few with broken welds

 

[Dom426]

I second the heat shields as I've seen a few with broken welds

Actually you would be third i got the second spot...lol:chain:

 

[VENOMOUS1 RACING]

Actually you would be third i got the second spot...lol:chain:

Ok I fourth the heat shields

 

[Psycho Mythic]

Ok guys im thinking this is an electonic somehwere doing something weird. The front cats are gutted and it still did it, but i left the truck at a buddies last night, and while he was doing something in the yard today he said the truck did it again, and the thing hadnt ran in 24 hours...