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GeorgeK
11-02-2009, 09:08 PM
Automatic transmission 1996 F-150 pick up with a single exhaust system: "Your right manifold is needing replacing. That's what our engine guy came up with."

Is the "engine guy" talking out the wrong orifice, or is this plausible?

Duncan J Macdonald
11-02-2009, 10:18 PM
Automatic transmission 1996 F-150 pick up with a single exhaust system: "Your right manifold is needing replacing. That's what our engine guy came up with."

Is the "engine guy" talking out the wrong orifice, or is this plausible?

Further Questions will help narrow down the answer.

1) Intake Manifold or Exhaust Manifold?

2) How many cylinders in the engine, and in what arrangement? (Inline or Vee?)

The fact that there is a single exhaust pipe just means that the exhaust stream joins into one pipe (normally, for a Vee configuration engine, the output from the exhaust manifolds (one for each side of the engine) will combine before the catalytic converter, then single-pipe from there.

So, yes, having to replace the right manifold is plausible, and leads me to the exhaust system, since intake manifolds are really only seen on carbureted engine.

Engine Choices for 1996 F-150 (from Consumer Guide (http://consumerguideauto.howstuffworks.com/1990-to-1996-ford-f-150-250-pickup-6.htm)):

4.9 liter I-6 Both Manual and 3- and 4-Speed Automatic
5.0 liter V-8 Both Manual and 3- and 4- Speed Automatic
5.8 liter V-8 Both Manual and 3- and 4- Speed Automatic
7.3 liter V-8 Both Manual and 3- and 4- Speed Automatic

GeorgeK
11-03-2009, 01:33 AM
It's a straight six, fuel injected and was apparently a custom build from the factory for the original owner. I bought it in 98 or so.

So then there is more than one manifold?

RobinGBrown
11-03-2009, 03:15 AM
A straight six has an inlet manifold on one side and an exhaust manifold on the opposite side.

A mechanic who knows what they're talking about wouldn't use left/right for a straight six, only for a V black engine which has inlet in the middle and exhausts on either side.

http://en.wikipedia.org/wiki/Straight_six

http://en.wikipedia.org/wiki/V8_engine

the addster
11-03-2009, 03:28 AM
Yep, I fear that they may tell you that your muffler bearings are going out next. I might see about another mechanic.

Cath
11-03-2009, 03:47 AM
Guys, I'm leaving this here because I'm a geek, and it's an interesting question, and I can see that it might be useful to someone. However, please do remember the purpose of this sub-forum is to support your story research.

Thanks! :)