Ford exhaust manifold leak - no power

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samrod
Posts: 2
Joined: Tue Feb 05, 2013 5:03 pm

Ford exhaust manifold leak - no power

Unread post by samrod » Tue Feb 05, 2013 5:06 pm

Would an exhaust leak at the exhaust manifold to cylinder head conjucntion cause an excessive loss of power upon acceleration?

scotty
Posts: 19
Joined: Sun Oct 14, 2012 11:52 am

Re: Ford exhaust manifold leak - no power

Unread post by scotty » Tue Feb 05, 2013 9:36 pm

No, an exhaust leak would not cause a bad loss of power. It will cause of course a noise and can effect the reading of the oxygen sensor on that side. That can effect fuel delivery, but would not cause an extreme loss of power.

samrod
Posts: 2
Joined: Tue Feb 05, 2013 5:03 pm

Re: Ford exhaust manifold leak - no power

Unread post by samrod » Wed Feb 06, 2013 3:19 am

scotty wrote:No, an exhaust leak would not cause a bad loss of power. It will cause of course a noise and can effect the reading of the oxygen sensor on that side. That can effect fuel delivery, but would not cause an extreme loss of power.
Thanks Scotty, I think I found the source, open vaccum port on intake manifold, however, still misfiring.

scotty
Posts: 19
Joined: Sun Oct 14, 2012 11:52 am

Re: Ford exhaust manifold leak - no power

Unread post by scotty » Wed Feb 06, 2013 8:20 am

A vacuum leak would not cause a loss of power. That will just give you a rough or high idle.
If the engine is misfiring, check the basics.
A bad spark plug.
Plug wire.
Ignition coil.
Cap and rotor (depending on year).
Low fuel pressure.

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