| Fuel Efficiency Upgrade: Headers, Exhaust, Throttle Body, Aerodynamics |
| A Ford F-150 gets several upgrades, all leading to better efficiency and higher mpg. |
From "Weekend Mechanic" episode WKM-405 |
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(Continued from page )
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 The throttle-body spacer, installed
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The throttle-body spacer goes onto the intake manifold and the stock throttle body is re-installed on top of it.The new bolts go on and are tightened down. Before putting the new air dam in, install the rubber grommets onto the factory intake mounting plate. The air dam goes in and is secured using the supplied bolts, washers and brackets.
The reusable cone filter goes in and the clamp is tightened down (figure B). Weather-stripping fits over the air dam panels to seal and contain the system (figure C). Tuck the radiator coolant hose away, clipping it onto the body and securing with a washer.
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 The high-peformance air filter, installed
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 The new air tube, installed
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The air tube brackets are installed onto the manifold on both sides. It's a good idea to spray the hump hose with lubricant to make it easier to install and it fits well onto the air dam adapter. The hose clamp is tightened down to secure it to the air dam. Install the rubber ring seal onto the intake air tube, making sure that it fits snugly. Also install the grommet for the PVC connection. The new air tube goes on, fitting the inlet into the hump hose on the air dam and the outlet onto the throttle body, making sure it's pressed down securely. With everything fitting well, the air tube brackets are secured to the air tube. The mass air flow sensor is connected to the new air tube and is tightened down..The PVC fitting is installed into the grommet on the air tube and connected to the PVC hose.
| ALSO IN THIS EPISODE: | | Fuel Efficiency Upgrade: Headers, Exhaust, Throttle Body, Aerodynamics |
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