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.
· Hatchback · Highlander (Toyota) · Honda · Horizon (Plymouth) · Hudson Hornet · Hummer · Hyundai
· Hatchback · Highlander (Toyota) · Honda · Horizon (Plymouth) · Hudson Hornet · Hummer · Hyundai
Most vehicles made before 1994 use R-12 refrigerant.
4 quarts plus the filter. 4 quarts plus the filter.
· Horizon (Plymouth) · Hudson Hornet . Holiday 88 (Oldsmobile) . Hubmobile . Henry J