I have an 88 trooper, 4cyl, FI, whose engine was overheated, cooked the rings and warped the head. I rebuilt the engine and replaced the head.
With the crank timing mark at 0° and the cam sprocket notch at the arrow, and the distributor at middle of adjustment range, and using a timing light, I get spark exactly on the mark, but the injectors aren't working.
The fuel pump is new and works well.
With the cam sprocket advanced two teeth, I get fuel injected but the distributor has to be at maximum retardation for the engine to run, and it runs rough and sluggishly.
I also note that while the main engine relay feeds fuse #8, 10, #11 & #12, these are not live when the key is on.
The chilton manual really lacks a whole lot for eletrical schematics, and has numerous errors.
Can you help?
I'd also like to find a manual on the theory of operation for the fuel system components.
Sunday, February 13th, 2011 AT 11:23 PM