Car: '86 Tran Am 305 tpi

Ok everyone I worried about my engine. After my engines all warmed up and drive for a while then get home after and turn it off. I hear *Clunk* pause *Clunk*. I dont get it Is it cause I have a bit of a lead foot...

Also what is aknock sensor and what do I have to do to put 1 in?

 

sounds like its "dieseling", carbon buildup getting hot and causing detonation and keeping it running.


though, i didn't think F/inj could do that, because the injectors shut off?

 

Could you please describe detonation to me. Im alittle new to all the technical terms...sorry

 

bump

 

Detonation (also called "spark knock") is an erratic form of combustion that can cause head gasket failure as well as other engine damage. Detonation occurs when excessive heat and pressure in the combustion chamber cause the air/fuel mixture to autoignite. This produces multiple flame fronts within the combustion chamber instead of a single flame kernel. When these multiple flames collide, they do so with explosive force that produces a sudden rise in cylinder pressure accompanied by a sharp metallic pinging or knocking noise. The hammer-like shock waves created by detonation subject the head gasket, piston, rings, spark plug and rod bearings to severe overloading.


Mild or occasional detonation can occur in almost any engine and usually causes no harm. But prolonged or heavy detonation can be very damaging. So if you hear knocking or pinging when accelerating or lugging your engine, you probably have a detonation problem.