The exhaust manifold gasket on a 1998 Nissan Frontier Motor lorry may must to be replaced now, over generation, it cracks. Gaskets may be metal or thick cardboard. Provided the exhaust gasket is leaking, you can hear a many sound. Provided it has a dangerous crack, you might hear a indubitable hurried tapping uproar. Whether the crack is minimal, you might hear some illumination tapping. Remove the exhaust manifold bolts that you just labeled in this order: 5, 4, 3, 2 and 1. Pull the exhaust manifold away from the engine -- you do not have to remove it -- and pull the gasket from between the manifold and the engine.7.
1. Set the relay box near the Chauffeur's side fender fit. Lift the insert off. The diagram on the backside of the contain Testament announce you which relay is for the fuel pump. Pull the fuel pump relay elsewhere -- you should be able to pull it gone with your fingers. Eccentric person the engine over. Provided it starts, let it bound until it runs absent of Gauze. Provided it doesn't dawn, condign Eccentric person it over four or five times to help the fuel strength in the fuel method.
2. Disconnect the absent battery cable and put it aside, ensuring that it does not touch metal. Loosen the clamps on the air duct, using the receive socket or screwdriver, depending on the type of clamp used. Remove the PCV hose. Remove the electric throttle intent check actuator bolts, using the adapted socket or wrench, and pull the electric throttle polity actuator and its gasket off the top of the engine.
3. Unplug the harness connector for the air-to-fuel-sensor, the slide the harness away of the bracket and the Centre clamp. Using especial part J-44626 from Nissan, remove the air-to-fuel-ratio sensor, bewitching affliction not to damage it. Provided you Blop the sensor, it is It’s all up and Testament need to be replaced.
4. Remove the front exhaust tube and the exhaust manifold cover with the appropriate sockets. Remove the bracket that sits between the exhaust manifold three-way catalyst assembly and the transmission with the appropriate sockets or wrenches.
5. Number the bolts on the exhaust manifold. Locate the bolt in the middle of the manifold, between the two center exhaust pipes. Label that bolt "1." Label the bolt located just to the upper left of No. 1 with a "3." This bolt is located between the first and second pipes. Label the bolt between the third and fourth pipes with a "2." Label the bolt all the way to the left with a "4" and the bolt located all the way to the right with a "5."
6. The tapping racket is exhaust Gauze activity pushed gone of the crack in the gasket. The exhaust stroke has the most impulse on the exhaust gaskets, thus the tapping noise instead of a fixed buzz.
Instructions
Slide the new gasket between the manifold and the engine, and hold the gasket against the engine. Push the manifold up against the gasket and engine. Insert each bolt, ensuring that you catch the gasket bolt holes, and thread it in by hand for three or four threads.
8. Tighten the bolts firmly, starting with the bolt labeled "1" and ending with bolt "5." Reinstall the bracket, front exhaust tube and exhaust manifold cover. Reinstall the air-to-fuel-ratio sensor and plug it in. Reinstall the cables, PCV hose and air duct. Plug in the fuel pump relay and reconnect the battery negative cable.
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