jperz09

ok so im lookin at a 1998 with a 4.6L, there is a clicking noise that im told is a small exhaust leak. sounds like its coming from the engine, or at the least under the hood. the thing is, is that iv heard this same clicking sound on other late model f150s, expeditions, what have you. so my question is does anybody know if it is an exhaust leak, and if not what is it, and why does it seem like its a common problem with late model ford trucks...any help would be great...thanks

jperz09

ok so im lookin at a 1998 with a 4.6L, there is a clicking noise that im told is a small exhaust leak. sounds like its coming from the engine, or at the least under the hood. the thing is, is that iv heard this same clicking sound on other late model f150s, expeditions, what have you. so my question is does anybody know if it is an exhaust leak, and if not what is it, and why does it seem like its a common problem with late model ford trucks...any help would be great...thanks

bigredford

When do you hear the noise. If it's when it first starts up when it's cold that's common. Its just lifters, they don't have any oil to really speak of around them because all the oil is drained back into the pan. Other then that I have never heard of and clicking noises.

wde3477

A small exhaust leak will make a 'ticking' noise that tends to subside as the motor warms up and things expand.

Generally not a problem as far as operation, more of a nuisance thing for the owner and for potential resale value - most buyers shy away from any imperfections unless there is a price break.

IMO, lifter noises tend to subside pretty quick (couple of seconds), exhaust leaks subside gradually until the engine is at operating temp.

bakerbob

its the fuel injectors

redman transport

Hey there ya it is a exhaust manifold, it will get louder with time.. if your lucky it is just a gasket. I had a 98 4.6 and i had to do both sides.

wde3477

My experience with small exhaust leaks is that they're typically a bit louder with a cold engine, then quiets a little as the engine warms.

transmaster

you don't have the 5.4L do you this sound is one of the one made when you have a spark plug getting ready to blow out

obusnizzle

could be rod slap. the original 4.6 in my car did it. the rod bearing began to wear and caused a small degree of endplay on the crank.

redman transport

oh ya 5.4 and its pissn me off....i had a 4.6 with 200000km on it and didn't touch engine..and it was drove hard.