351w Upper intake plenum removal
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Senior User
Joined: Jun 2013
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351w Upper intake plenum removal
Hello guys I was taking off the plenum today and got every bolt out of the plenum besides the last one. There is a torx 40 screw I think hidden near the middle on the intake, and I was wandering if any of you had any good ways to get a this screw out.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
They offer a special tool for that looks like this,
I'd have to get mine out and look but I believe the actual "tool" is 10" long.
3/8" drive shorty on an extension won't work as I imagine you already figured out, not enough clearance right at the head, however I believe a 1/4" drive setup would get it.
Can also use your basic torx screw driver (long handle), bolts aren't that tight to start with worse case grab handle with channel locks to break it loose.
I'd have to get mine out and look but I believe the actual "tool" is 10" long.
3/8" drive shorty on an extension won't work as I imagine you already figured out, not enough clearance right at the head, however I believe a 1/4" drive setup would get it.
Can also use your basic torx screw driver (long handle), bolts aren't that tight to start with worse case grab handle with channel locks to break it loose.
Thread Starter
|
Senior User
Joined: Jun 2013
Posts: 255
Likes: 0
They offer a special tool for that looks like this,
I'd have to get mine out and look but I believe the actual "tool" is 10" long.
3/8" drive shorty on an extension won't work as I imagine you already figured out, not enough clearance right at the head, however I believe a 1/4" drive setup would get it.
Can also use your basic torx screw driver (long handle), bolts aren't that tight to start with worse case grab handle with channel locks to break it loose.
I'd have to get mine out and look but I believe the actual "tool" is 10" long.
3/8" drive shorty on an extension won't work as I imagine you already figured out, not enough clearance right at the head, however I believe a 1/4" drive setup would get it.
Can also use your basic torx screw driver (long handle), bolts aren't that tight to start with worse case grab handle with channel locks to break it loose.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Gonna order one (should be able buy one cheap local easy enough) get a longer version such as this one,
VIM Tools , XLT40 3/8 In Dr X-Long Torx Driver- T40, - Ford V8 Intake Manifold Rem
New User
Joined: Aug 2017
Posts: 5
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NEED HELP
Do you have to take the plenum off on the 1996 f150 to get the crankcase breather cap off? There is a cap in passenger side valve cover under plenum with hose that goes to PCV valve. I think it may be leaking air at grommet giving me a P0174 lean code and check engine light. Thanks for any help.
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FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
5.0 no, 5.8 yes.
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New User
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HELP NEEDED
Thanks for the reply. I have a 5.8. What are the chances the grommet can be leaking air to give me a P0174 lean code. Have checked MFS, EGR including sensor, all vacuum hoses, water tested intake gaskets, new plugs, new filter. Will check fuel rail pressure next but at a loss after that. Don't know if computer could be a problem. Truck runs great only sets engine light 20 miles in town driving. Out of town can go forever on highway no engine light.
Cargo Master
Joined: Jan 2004
Posts: 2,512
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From: Cook Forest and Irwin PA
P0174? what you got a caddy northstar? ;-) (very common n* problem...) got intake leak in aforementioned gasket or anything rubber from the inside of the mass air to the cylinders themselves?
New User
Joined: Aug 2017
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Have a 1996 f150 5.8 checked everything and it runs high speed good no check engine lean light but low speed around town get check engine light. Don't think it is lack of fuel since it runs good high speed. Have checked all hoses and other as listed in above. Any idea where to go from here. I am concerned about the crankcase cap grommet under upper intake. But have to pull it to check.
FTE Chapter Leader
Joined: May 2006
Posts: 12,338
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From: Central Mississippi
You can unplug the hose that runs to the intake & cap the hose or intake at the nipple.
If that improves things, then you can worry about replacing the grommet the PCV valve goes into.
If it doesn't improve things, a leaky grommet is not your problem.
If that improves things, then you can worry about replacing the grommet the PCV valve goes into.
If it doesn't improve things, a leaky grommet is not your problem.
New User
Joined: Aug 2017
Posts: 5
Likes: 0
Thanks for the advice. I assume you are referring to taking the PCV out plugging where it went in the hose and leave the hose going into the cap open venting the crankcase out of that hose while looking to see if I get a lean code while driving. Have I got that correct?
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