Strange Engine Noise

[Brendan Morgan]

Wanted to know if anyone could help me diagnose this engine noise on my “soon to be scrap” 1994 ford explorer. I plan on tinkering with it this weekend. Any suggestions would be appreciated. More info in the link.

https://www.youtube.com/channel/UCDEE0T9HxpE06-0xIffebfg

Also, Eric Thanks for all the awesome videos on here, learned a lot.

Stay Dirty!

Topic

[Its me]

Difficult to say, but since it appears to be only one side it Sounds to me kinda like an exhaust leak, possibly from the exhaust manifold gasket/Manifold, or donut.

I would do a good inspection of the exhaust system…

JMHO

Karl

[Brendan Morgan]

Thanks, yea I am planning to double check the exhaust manifold but felt like I could hear it in the upper intake, hoping the cat is not starting to back up or something.

[college man]

get some seafoam spray and put some in the intake to get the
truck to smoke. Then put a rag over the exhaust pipe and you
will see any exhaust leaks.

[Bill]

It’s an exhaust leak for sure, like maybe the EGR tube from the valve to the exhaust manifold. I see it has a new EGR installed.

[Brendan Morgan]

College Man,

Thanks, I did pick some sea foam and will see if I can find it.

Wysetech,

Yea, not sure if the previous one was bad but played it safe. Also replaced the pcv and tonight I put on new egr pressure feedback hoses, one was cracked at the sensor connection and it helped settle the idle a bit. I did notice that the erg tube has a small leak and i am going to attempt to wrap it in some high temp aluminum tape. I would replace it but they are not cheap.

[Author]

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