This is a bit long but I want to give the full picture.
Over the last 3 days he old (89) XJ has been a bit slower starting. The other day it would not start so wiggles wires, unplugged and plugged the CPS and it finally started. It started several more time that ay without a problem.
As the starter is the original and is sounding a bit weak I pressure washed that area just in case I need to replace it. That was last night. After the was the jeep started up better than it had for a couple of days. (was expecting worse).
This morning it would not start. It will crank.
Check for spark, yes.
Checked for fuel, yes. Good flow from the pump before and after the filter. But in checking I noticed a couple of things and would like to know if they are normal.
1) when I press the pressure relief valve on the fuel rail a small bit of feul leaked out. After checking the pump (see next question) and with the key in the on position some fuel, more that before, will come out but the pump does not re-pressurize the rail. Also the fuel does squirt out but some times not very much and is is more of an ooze. I would expect more from 30+ psi.
2) I pulled the return fuel line by the tank and the fuel will squirt out just like the line from the pump.
Could this be a bad pressure regulator?
One other recent issue, may or may not be relevant. About a week ago I noticed some wires were touching the side of the engine and the split loom was melted. Looked more and found the wires were run in a bad place. These wires go to the O2, knock and 1 other sensor. The leave the wire bundle by the fuel pressure regulator. They were routed straight down past the exhaust manifold. I look up pictures on the net and saw they were usually routed over and down past the power steering pump. So I unplugged the sensors pulled the wires up. Yuck, the one wire that I saw touching the motor has exposed wires. Touched it up with liquid e-tape wrapped a new layer of regular e-tape around the bundle put on new split loom and routed it over and down past the p-steering pump. I can only think that on 1990 when the exhaust manifold cracked and was replaced under warranty by the stealer that the wires were routed incorrectly. It is a wonder they lasted this long. I noticed no difference before or after this fix on starting.
This is my DD, so I'm off work today, can't get there, trying to get this fixed.
Over the last 3 days he old (89) XJ has been a bit slower starting. The other day it would not start so wiggles wires, unplugged and plugged the CPS and it finally started. It started several more time that ay without a problem.
As the starter is the original and is sounding a bit weak I pressure washed that area just in case I need to replace it. That was last night. After the was the jeep started up better than it had for a couple of days. (was expecting worse).
This morning it would not start. It will crank.
Check for spark, yes.
Checked for fuel, yes. Good flow from the pump before and after the filter. But in checking I noticed a couple of things and would like to know if they are normal.
1) when I press the pressure relief valve on the fuel rail a small bit of feul leaked out. After checking the pump (see next question) and with the key in the on position some fuel, more that before, will come out but the pump does not re-pressurize the rail. Also the fuel does squirt out but some times not very much and is is more of an ooze. I would expect more from 30+ psi.
2) I pulled the return fuel line by the tank and the fuel will squirt out just like the line from the pump.
Could this be a bad pressure regulator?
One other recent issue, may or may not be relevant. About a week ago I noticed some wires were touching the side of the engine and the split loom was melted. Looked more and found the wires were run in a bad place. These wires go to the O2, knock and 1 other sensor. The leave the wire bundle by the fuel pressure regulator. They were routed straight down past the exhaust manifold. I look up pictures on the net and saw they were usually routed over and down past the power steering pump. So I unplugged the sensors pulled the wires up. Yuck, the one wire that I saw touching the motor has exposed wires. Touched it up with liquid e-tape wrapped a new layer of regular e-tape around the bundle put on new split loom and routed it over and down past the p-steering pump. I can only think that on 1990 when the exhaust manifold cracked and was replaced under warranty by the stealer that the wires were routed incorrectly. It is a wonder they lasted this long. I noticed no difference before or after this fix on starting.
This is my DD, so I'm off work today, can't get there, trying to get this fixed.