The proper gap for 1990 aerostar spark plug is .044. This was taken from Dept of Motor Vehicles in Delaware. - Bill R. Jr.
The 1990 Ford Aerostar Maintenance Information manual says 21 gallons.
It might fit but it will take you a while.
Sparks The Price of Passion - 1990 TV was released on: USA: 25 February 1990
I believe .41 Do not quote me on that. Maybe .44
Sparks The Price of Passion - 1990 TV is rated/received certificates of: Argentina:13
You have a 21 gallon tank.
In a 1990 Ford Aerostar : You either have the 3.0 liter V6 engine or the 4.0 liter V6 engine from the factory ( each size of engine has 6 engine cylinders )
It's inside the gas tank
The distributor for a 3.0 liter in a 1990 Ford Aerostar rotates CLOCKWISE ( looking from the top ) The spark plug firing order is ( 1 - 4 - 2 - 5 - 3 - 6 ) The engine cylinder locations are numbered : 3 - 6 2 - 5 1 - 4 front of Ford Aerostar
8 spark plugs
Check the fuses first!
21 gal. probably, full it up and see.