Jeeplife7926
NAXJA Forum User
- Location
- NJ
1998 XJ Sport I6 4.0
HELP
I can smell gas in my oil.
It smells like there is a lot and it may be thinning my oil.
I noticed this a few weeks back and started with an oil change.
The gas smell came back immediately and seemed to get stronger after some light use.
Online research points to injectors leaking.
Fuel injectors were one of the many projects I recently completed.
I purchased the Bosch Upgrade injectors. The were re-manufactured and ultrasonic cleaned. They looked great and were packaged great. So i'm reluctant to believe they are leaking.
As my next step I did a Fuel Pressure test.
Turned the ignition to on twice and got 40PSI at the gauge, However
It dropped in pressure very quickly once switched off.
This confirmed loss of pressure in fuel system
While doing the Fuel pressure test I did not pinch of gas lines in order to verify if pressure loss was at injectors or the check valve into gas tank.
I pulled the fuel rail and the injectors and turned the ignition on. the fuel pressurized but did not leak out any of the injectors.
I did not crank the engine to see how fuel sprays from injectors
What should I test next?
Would fuel have leaked out of the injectors from just turning ignition on and pressurizing fuel rail, if they were bad.
Could a spark plug not be firing and fuel pass into oil that way?
The engine does not sound like its misfiring. It sounds normal.
I have also seen very little online about, ground short wiring on injector harnesses causing the injector to stay open.
I do see excessive wear on one of my fuel injector wiring connector harnesses. I can see the copper wire right before it plugs into fuel injector, Used electrical tape to keep the wires from touching. I also have a new set of wiring connectors for all the injectors if i need to cut and splice them in.
How can I tell if it is an electrical short keeping a fuel injector open.
If it is just a leaking injector what is my next step how can i tell if the injectors leaking?
Did I have to crank the engine over with the rail disconnected to find out more?
"I know there is a safer method of removing injectors and sending them out to be tested by machine." It is not reccomended to pull a fuel rail and visually observe its operation.
I dont want to contact the company that sold me the fuel injectors without knowing for sure if there leaking first, how many and which ones.
HELP
I can smell gas in my oil.
It smells like there is a lot and it may be thinning my oil.
I noticed this a few weeks back and started with an oil change.
The gas smell came back immediately and seemed to get stronger after some light use.
Online research points to injectors leaking.
Fuel injectors were one of the many projects I recently completed.
I purchased the Bosch Upgrade injectors. The were re-manufactured and ultrasonic cleaned. They looked great and were packaged great. So i'm reluctant to believe they are leaking.
As my next step I did a Fuel Pressure test.
Turned the ignition to on twice and got 40PSI at the gauge, However
It dropped in pressure very quickly once switched off.
This confirmed loss of pressure in fuel system
While doing the Fuel pressure test I did not pinch of gas lines in order to verify if pressure loss was at injectors or the check valve into gas tank.
I pulled the fuel rail and the injectors and turned the ignition on. the fuel pressurized but did not leak out any of the injectors.
I did not crank the engine to see how fuel sprays from injectors
What should I test next?
Would fuel have leaked out of the injectors from just turning ignition on and pressurizing fuel rail, if they were bad.
Could a spark plug not be firing and fuel pass into oil that way?
The engine does not sound like its misfiring. It sounds normal.
I have also seen very little online about, ground short wiring on injector harnesses causing the injector to stay open.
I do see excessive wear on one of my fuel injector wiring connector harnesses. I can see the copper wire right before it plugs into fuel injector, Used electrical tape to keep the wires from touching. I also have a new set of wiring connectors for all the injectors if i need to cut and splice them in.
How can I tell if it is an electrical short keeping a fuel injector open.
If it is just a leaking injector what is my next step how can i tell if the injectors leaking?
Did I have to crank the engine over with the rail disconnected to find out more?
"I know there is a safer method of removing injectors and sending them out to be tested by machine." It is not reccomended to pull a fuel rail and visually observe its operation.
I dont want to contact the company that sold me the fuel injectors without knowing for sure if there leaking first, how many and which ones.