XJ 4.0 RENIX Shoots
02-01-2023, 04:11 PM
#1
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XJ 4.0 RENIX Shoots
Hello,
I have a problem with my renix,4.0 as soon as I want to add gas, the engine shoots at the muffler or intake manifold.
Maybe someone had a similar problem?Regards MattSphere
I have a problem with my renix,4.0 as soon as I want to add gas, the engine shoots at the muffler or intake manifold.
Maybe someone had a similar problem?Regards MattSphere
02-01-2023, 10:39 PM
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Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
Just about everyone with a RENIX has had a similar problem. The RENIX has several common issues, mostly concerning bad electrical grounds. Without anymore background on your problem, I would suggest focusing on the fuel system. Can you provide the fuel pressure of the running engine, with and without the vacuum line connected to the fuel pressure regulator? You're looking for 31 PSI with / 39 PSI without.
02-02-2023, 12:47 AM
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[ CYTAT = dmoe69; 3690718 ] Prawie każdy z RENIX miał podobny problem. RENIX ma kilka typowych problemów, głównie dotyczących złych podstaw elektrycznych. Bez żadnego doświadczenia na temat twojego problemu sugerowałbym skupienie się na układzie paliwowym. Czy możesz podać ciśnienie paliwa pracującego silnika, z przewodem próżniowym podłączonym do regulatora ciśnienia paliwa i bez niego? Szukasz 31 PSI z / 39 PSI bez. [/QUOTE ]Sorry Im Translation from English translator i need some learn English ;p.
I don't think it's fuel because it happens on gas fuel too
the mixture is ignited at the wrong time
I checkedengine harness pulled out and inspected
compressing all cylinders 14bar (honing/rings)
replaced ignition coil
replaced ignition device
replaced shaft position sensor
replaced throttle position sensor
replaced spark plugs
replaced ignition wires
I don't think it's fuel because it happens on gas fuel too
the mixture is ignited at the wrong time
I checkedengine harness pulled out and inspected
compressing all cylinders 14bar (honing/rings)
replaced ignition coil
replaced ignition device
replaced shaft position sensor
replaced throttle position sensor
replaced spark plugs
replaced ignition wires
02-02-2023, 05:47 AM
#6
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
It might be a dual fuel propane and gasoline model from Europe.
02-02-2023, 10:22 AM
#7
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Just about everyone with a RENIX has had a similar problem. The RENIX has several common issues, mostly concerning bad electrical grounds. Without anymore background on your problem, I would suggest focusing on the fuel system. Can you provide the fuel pressure of the running engine, with and without the vacuum line connected to the fuel pressure regulator? You're looking for 31 PSI with / 39 PSI without.
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02-02-2023, 10:23 AM
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Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
When you first start it, when the engine is cold, for about the first thirty seconds can you give it fuel with the accelerator pedal without it backfiring?
02-02-2023, 08:34 PM
#10
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Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
That reduces the scrutiny on certain sensors, but it does little to narrow down your problem. Assuming you have good combustion in all cylinders, and you indicate good compression, I wouldn't suspect a valve issue. I am way out of my element on European dual fuel engines though. I would suggest taking a look at:
cruiser54 | True tales from "The Book" and consider performing tips 1 - 5 and even #6 (#27 may be better than #2 in the long run, if you still have the C101 connector).
cruiser54 | True tales from "The Book" and consider performing tips 1 - 5 and even #6 (#27 may be better than #2 in the long run, if you still have the C101 connector).
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