e-ranger
New Member
- Joined
- Dec 30, 2007
- Messages
- 15
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1990
- Make / Model
- Ford
- Transmission
- Automatic
I've got a '90 XLT with a 4.0L and an automatic.
I recently replaced the head gaskets, push rods and rocker arms and installed a set of Hedman headers and y-pipe. This is not my first rodeo as I've rebuilt many engines (mostly V8 carbed motors.) Everything is torqued correctly and installed properly, I've triple checked all the torque specs.
Upon start up, there are no mechanical noises. I checked valve operation prior to start up and everything moves correctly. I checked fuel pressure at start up and it is around 38-40 psi. All the injectors are working (I can hear them tick with a stethoscope.) The fuel pressure regulator seems to work properly ( I can pull the diaphragm back and forth by sucking on the vacuum line.) I replaced the coil pack because it was 2k ohms out of spec. The wires and plugs are new and gapped correctly (.044 in.) The motor ran correctly before all the work was done, however it did consume lots of coolant (thus the work being done.)
Originally the motor would start, but missed on 3-4-6. Now it does not start at all however, the spark plugs do spark . I checked cylinder pressure and all cylinders hold good pressure ( 120 +/- 5.) I do not know where to go with this. Suggestions?
Erik
I recently replaced the head gaskets, push rods and rocker arms and installed a set of Hedman headers and y-pipe. This is not my first rodeo as I've rebuilt many engines (mostly V8 carbed motors.) Everything is torqued correctly and installed properly, I've triple checked all the torque specs.
Upon start up, there are no mechanical noises. I checked valve operation prior to start up and everything moves correctly. I checked fuel pressure at start up and it is around 38-40 psi. All the injectors are working (I can hear them tick with a stethoscope.) The fuel pressure regulator seems to work properly ( I can pull the diaphragm back and forth by sucking on the vacuum line.) I replaced the coil pack because it was 2k ohms out of spec. The wires and plugs are new and gapped correctly (.044 in.) The motor ran correctly before all the work was done, however it did consume lots of coolant (thus the work being done.)
Originally the motor would start, but missed on 3-4-6. Now it does not start at all however, the spark plugs do spark . I checked cylinder pressure and all cylinders hold good pressure ( 120 +/- 5.) I do not know where to go with this. Suggestions?
Erik