Hello i have a ford Econoline 1985 i thought it was a V8 as the guy who i brought it off told me it was.Anyway i got it home took the engine cover off and its a six cylinder no carb but it has a large aluminum ????? not sure what it is on top of the rocker cover is it the injector.It says on the paper work 4900cc so what i would like to know is what mpg does this engine do.What speed will it do. its a auto.Is the engine any good.I am sure it has injectors.Thanks

 

This is the Aerostar forum, which is quite different from the Econoline vans. You will get better information from one of the F-150 forums.

Your van has the 300 CID inline 6 engine. The big aluminum structure on top of the engine is the upper intake manifold for the fuel injection system. (I didn't realize Ford used EFI on such an early van.)

The other thing is, if the seller put down in writing that the van had a v8, but it actually has an I6, you have a legal issue you can take up with him. But if he just verbally told you, and you took his word without visually verifying, you're kind of out of luck.

 

Hi thanks for that.It was just verbal but decided to sell it on and get a V8 but thanks

 

as I know - no CFI was on this engine, EFI with EEC-IV.

 

Could you tell more please i dont understand what cfi or the efi eec-iv sorry i am learning

 

CFI - central fuel injection. Early fuel injection. But in 85 EFI was introduced. I had Aerostar with early EEC-IV.

As I know with 4.9 six in line they used carburator and EFI

 

In 85 my f150 had efi. PIA

 

early EFI got no MAF. They used MAP - manyfold absolute pressure to calculate engine load (LOL, no calculation, they used pre calculated maps)

No DIS, simle distributor, but... electronic spark advance

There was only one HEGO sensor

No digital dashboard. So additional ECT was used. For dash only...

Well, it is really old school fuel injection.

 

What he said..

 

My 1987 Mustang came with a similar EFI setup for the 5.0; SD (MAP) system used to estimate air intake, but 1 HEGO sensor in each side of exhaust H pipe. Still works quite well after 26 years; starts right up, idles smoothly, lots of power, can manage 20+ mpg if I'm careful, and pass the biannual smog check by huge margins.

 

85 was the first year I think.

 

People say '84 was the first year