Pinging on Highway
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
To the contrary Rock---you've expressed yourself quite well here---at least I think so. I didn't mean to suggest otherwise or that adding a term changes what you were describing.
And I agree with your observations about exhaust flow through the cast manifolds and headers. If I'm not mistaken headers were developed for racing engines rather than attempting to improve stock exhaust systems.
And I agree with your observations about exhaust flow through the cast manifolds and headers. If I'm not mistaken headers were developed for racing engines rather than attempting to improve stock exhaust systems.
Fleet Mechanic
Joined: Oct 2004
Posts: 1,394
Likes: 104
From: Southern KS
I wasn't trying to cause any problems Rock. I like the way you deep dive into how systems work.
I work in the Engineering field of aircraft manufacturing. Airflow is always described using the term pressure differential. Just because a vacuum (negative pressure) is present doesn't always mean there will be airflow.
I work in the Engineering field of aircraft manufacturing. Airflow is always described using the term pressure differential. Just because a vacuum (negative pressure) is present doesn't always mean there will be airflow.
Fleet Mechanic
Joined: Mar 2013
Posts: 1,576
Likes: 41
From: Wyoming
I just hope the OP accidentally put a 1/2 tank of E85 in his tank and that is what caused the pinging. Please keep us apprised of the solution if you find one other than 91 octane fuel.
Don't count out a bad charging system either. Low volts at high load will not power the fuel pump correctly and motor could run lean.
There are just so many things it could be.
Thanks I'm a structural engineer, so that's my excuse for always wanting things in tip top shape. Otherwise bridges and buildings fall down. Guess I'm the same way with my 3 excursions.
Don't count out a bad charging system either. Low volts at high load will not power the fuel pump correctly and motor could run lean.
There are just so many things it could be.
Thanks I'm a structural engineer, so that's my excuse for always wanting things in tip top shape. Otherwise bridges and buildings fall down. Guess I'm the same way with my 3 excursions.
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
I just hope the OP accidentally put a 1/2 tank of E85 in his tank and that is what caused the pinging. Please keep us apprised of the solution if you find one other than 91 octane fuel.
Don't count out a bad charging system either. Low volts at high load will not power the fuel pump correctly and motor could run lean.
.
Don't count out a bad charging system either. Low volts at high load will not power the fuel pump correctly and motor could run lean.
.
Like you though I'm hoping its nothing more than a 1/2 tank of the non-optimal fuel. (Hows that for double speak?
)
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
I've never heard of such a fix----how does that repair a pinging as described by MGraveman?
Thread Starter
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Elder User
Joined: Feb 2004
Posts: 898
Likes: 3
Well, so far the manifold gasket is replaced and there was a broken plug. Hopefully this takes care of it. Probably won’t know until I run the premium gas theough it.
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
tell us about the broken plug. Post pics
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