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Oil in the inlet manifold 5.4 

 

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 Post subject: Oil in the inlet manifold 5.4
Posted: Thu Feb 24, 2011 3:04 pm 
Fordmods Newbie
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Age: 45

Posts: 2

Joined: 29th Apr 2010

Ride: Ford BA Fairmont Ghia

Location: sydney
NSW, Australia

Hi,

I have a 2002 BA Fairmont Ghia 5.4.

Its been running rough, idling badly, surging and sometimes stalling.
This problem gets better when the car is warm, but there is still a miss.
So I pulled the throttle body off so I could replace the MAP sensor.
When I looked inside the inlet manifold there was quite a bit of oil pooled in the bottom of the inlet manifold.

Is this normal?

The reason I ask is because when I pulled off the MAP sensor there was quite a bit of oil on the sensor.
I dont want to replace the sensor if this going to happen again.

Your help would be much appreciated.

John
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 Post subject: Re: Oil in the inlet manifold 5.4
Posted: Thu Feb 24, 2011 3:07 pm 
Getting Side Ways
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Age: 27

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Joined: 13th Oct 2009

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Ride: EL XR6

Location: Parramatta
NSW, Australia

Had the same thing happen to me.
Check your rocker breather valves. Thats what was causing mine. Can you feel a misfire at all?

Cheers

Sam

 

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 Post subject: Re: Oil in the inlet manifold 5.4
Posted: Thu Feb 24, 2011 3:29 pm 
Fordmods Newbie
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Age: 45

Posts: 2

Joined: 29th Apr 2010

Ride: Ford BA Fairmont Ghia

Location: sydney
NSW, Australia

Hi Sam,

There is a bad miss under acceleration. It splutters a fair bit, but when it reaches about 3000 revs it seems to clear itself.

What do I check for with the rocker breather valves?

Thanks John
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 Post subject: Re: Oil in the inlet manifold 5.4
Posted: Mon Feb 28, 2011 9:45 pm 
Smokin em up
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Age: 31

Posts: 276

Joined: 14th Apr 2009

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Ride: Fairmont Ghia BA 5.4L V8, AU 6

Power: 205 rwkw

Location: Perth
WA, Australia

Hey Mate,

Yeah its sort of normal if you have high k's. At 80,000 mine had a bit of a pool happening but i pulled the inlet off and cleaned it all out and same with the runners. If you got small enough hands soak it up with a rag. Giving the Thottlebody a good clean wouldnt hurt aswell.

I had the same issues your having too, surging stalling etc etc. But it didnt miss fire. I replaced the MAP Sensor and it ran so much better, even had more power. I think it cost me about $130 from coventry's. But before you replace it check all the hoses for a vacuum leak. IE not connected up properly, or cracked hose. Vacuum guage would help you determine if there is a leak.

 

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BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.

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 Post subject: Re: Oil in the inlet manifold 5.4
Posted: Mon Feb 28, 2011 11:54 pm 
ACT Cruise Moderator
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Age: 36

Posts: 6275

Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

The BOSSes throw a fair bit of oil around at high revs, those who mod them often get catch cans to keep the oil out of the PCV and thus throttle body and intake manifold.

You can clean the manifold and MAP (no need for a new one). Get some catch cans to stop it happening.

 

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1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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