Intake manifold
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Intake manifold
I was replacing my spark plugs and one screw holding the ignition coil stripped while another snapped. I have change 3 plugs (the easy one) and could have more problems. I spent half a day trying to drill the screws out to no avail and also noticed the intake manifold is plastic. I was thinking of swapping it out. This would alleviate the broken screw problem and make pulling the plugs easier. It also looks like it's just 8 bolts. Would swapping a new intake manifold in add any performance gains? Is there a manifold others recommend?
Hotshot
Joined: Mar 2007
Posts: 10,101
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From: Pa
Those plastic intake manifolds can be prone to cracking, mainly around where the coolant passages are. It won't hurt to replace it and install new gaskets. Would also be a good time to clean/replace the IAC, clean the throttle body, inspect all hoses, etc.
Here is a write up.
2004 F250 Intake Manifold Replacement
Here is a write up.
2004 F250 Intake Manifold Replacement
Cargo Master
Joined: Jan 2012
Posts: 3,053
Likes: 21
From: Pittsburgh, PA
Jason did a really nice writeup on the replacement.
https://www.google.com/url?sa=t&rct=...aLpOa9Ysp3Qm9w
https://www.google.com/url?sa=t&rct=...aLpOa9Ysp3Qm9w
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Yea that write up is great. Anyways I started the project and fairly easily got to the point where I'm ready to unbolt the manifold. Unfortunately the bolts are very rusty and I'm not sure I'll be able to get them out. Since the manifold is plastic I was thing of taking a saws all and cutting it out as much as I can and than when it's out I'll have more room to get a wrench on the bolts. Does anyone see any potential problem if I do this?
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Problem is the more rusty ones are toward the rear and I don't see getting a drill in there. Maybe a pry bar or hammer to get it out? However the saws all shouldn't spark since it's cutting plastic right?
Cargo Master
Joined: Jan 2012
Posts: 3,053
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From: Pittsburgh, PA
I would go nice and slow. Soak them with penetrating oil. Then try to break them loose. Once broken loose, soak in oil again and let them sit. Then slowly back them out. If they are galded up really bad, back them out a quarter turn and then crank them back in a quarter turn. Then back them out a half turn. This motions has gotten most fasteners out for me. When initially trying to break them loose, you can also try to snug them up to break the rust.
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I was able to remove it. I used the 3/8 instead of the metric and it got a grip on them. I was able to get all but one out this way. The one that stuck was the last one in the corner, so I lifted up on the manifold and the plastic snapped around the bolt. I was than able to get a lisle bolt remove on it and it came out. The metal on the fuel injectors is pretty rusty. Do I need to replace these? I looked online and they seem pretty expensive
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