http://www.knizefamily.net/minimopar/images/vac-carb-fed-87.jpg Here you go.
When making any changes to a vehicle, a diagram can help point the person in the right direction. A vacuum line diagram for a 1988 Plymouth Horizon can be found in its maintenance manual.
the best source for this information is the haynes manual for the horizon it can answer any question you could possibly have here is the link to amazon http://www.amazon.com/Haynes-Dodge-Omni-Plymouth-Horizon/dp/B0002KKRGU/ref=sr_1_2?ie=UTF8&s=automotive&qid=1197045454&sr=8-2
where is the fuel filter on a 1987 plymouyh horizon?
Green
Try looking on top of the fuel tank. The tank does have to be dropped to do this.
Hot wire it. or go to the manufacturer and get a set of keys made
Open the hood the fuel filter is right in front of the valve cover and it is clear.
The layer that contains the most organic material in the diagram is the top layer, known as the O horizon or organic horizon. This layer is made up of decomposing organic matter such as leaf litter and other plant debris.
4 quarts plus the filter. 4 quarts plus the filter.
Most vehicles made before 1994 use R-12 refrigerant.
· Hatchback · Highlander (Toyota) · Honda · Horizon (Plymouth) · Hudson Hornet · Hummer · Hyundai
· Hatchback · Highlander (Toyota) · Honda · Horizon (Plymouth) · Hudson Hornet · Hummer · Hyundai