1990 22R engine fuel line diagram

I can provide you with a general fuel line system diagram for a 2006 Dodge Grand Caravan with a 3.8L engine. However, keep in mind that the specific layout of the fuel lines in your vehicle may vary depending on the trim level, optional equipment, and other factors.

Here is a basic diagram of the fuel line system for a 2006 Dodge Grand Caravan with a 3.8L engine:

Fuel tank
Fuel pump
Fuel filter
Fuel pressure regulator
Fuel rail
Fuel injectors
Throttle body
The fuel tank stores the fuel for the vehicle. The fuel pump, located in the tank or along the frame rail, pumps fuel through the fuel filter, which removes impurities and debris. The fuel pressure regulator helps maintain the correct fuel pressure in the fuel rail, which supplies fuel to the fuel injectors. The fuel injectors spray a fine mist of fuel into the intake manifold, which is then drawn into the engine through the throttle body.

I hope this information helps! Let me know if you have any other questions.

question edited for clarity.
Question moved to category.

Two different systems, but in parts co-joined.

Fuel lines diagram.

https://www.google.com/search?q=1996+Honda+Passport+fuel+lines+diagram

Vacuum Lines

https://www.google.com/search?q=1996+Honda+Passport+vacuum+lines+diagram

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For fuel line diagram,check the link below:----

Toyota Fuel line diagram
http://technoanswers.blogspot.com/2012/12/toyota-fuel-line-diagram.html
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These will help.Thanks.

There is no such diagram available. You will simply have to follow the fuel lines from the fuel rail on the engine along the truck frame rail towards the tank, or from the fuel tank along the truck frame rail towards the fuel rail on the engine. Some are on the left side frame rail and some are on the right side frame rail, depending on which engine your vehicle is equipped with. You simply have to LOOK.

The fuel line comes from the tank to the fuel filter, goes tru the fuel filter to the fuel line going to the engine injector fuel lines which deliver a mist of fuel to the engine cylinders to make the vehicle run.

you dont need diagram, start under the car at fuel tank and follow the fuel line in the direction of the engine you will find the filter it is a silver bottle, if the fuel line enters the car before the engine bay then the filter is in the engine bay find where the line re-enters the engine bay and follow it. ( rate me thanks )

well i dont have a diagram but the run from the fuel tank along the drivers side frame to a frame mounted fuel pump then up to the engine. you can figure out what one is the return line by the fuel pump. the one that does not go to it is the sending not the return.

There may be a diagram of the vacuum lines and system mount under the hood or engine compartment.

fuel line either to or from the filter

The Lines are simple if it's a 2.4 EFI the lines run on the driver side inner rail from the center top of fuel tank, and up the middle of the firewall to the injector rail or throttle body carburetor there is also one line that runs from the evap canister back to the tank and to the fuel system three lines total one is a return line the large line is the main fuel line and has the fuel filter mounted on it and is under the driver side door inside the frame rail.