Misfiring on 4 cylinders and white smoke from exhaust
#21
Join Date: Jan 2012
Location: Newport Beach, California
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#22
So I was driving my 2011 XKR 70k miles on the highway the other day and got restricted performance mesage and blinking check engine light . Took a exit and stopped on traffic light, then I tried to accelerate and huge white smoke came out from exhaust and rpm were not stable. So I parked the car on a sidewalk, run diagnostics and this came out. that it was misfiring on cylinder 2,4,6,8, Also there was strong gasoline smell, I checked coolant and it was at min level but still there and smelled like burned fluid but it was clear. I tried to start the engine but it was making few knocking noises and wouldn’t start. towed the car to my home garage. Also, when i removed oil cap the oil smelled like gasoline. I'm not sure what to do now… any ideas ? Too add I had water pump replaced 2 months ago. The pulley was lose and making noise but coolant was not leaking at all. is there a easy way to determine if thats blown headgasket, or bad injectors? Thank yoU!
Last edited by Barry Leftwich; 12-29-2021 at 03:48 AM.
#23
i think you need to check your converters as well.Mine had the same problem with all cylinders misfiring once all because i put 112 racing gas in it that had lead that stopped up the converters.Take notes,never put 112 racing gas in a Jag even tho the gas lid cover says 91+up
I never put anything other premium gas...
#24
#25
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#27
Join Date: Jan 2015
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#28
UPDATE:
Thank you for all the help:
After working on this for few days. I managed to replace 4 injectors and 4 spark plugs on drivers side of the engine, What a major PITA, with wire loom getting in the way all the time. It was my first engine work project before I only replaced car stereos and bulbs in cars ....
So car started right away , there were clouds of smoke coming out from exhaust , and slight griding noise from the engine, I had it running in a garage for maybe 1 minute and shut down because of the smoke..... then I scanned the codes, and got no codes no misfire, but there are couple things that worried me in that 1 minute of running the engine,:
the white smoke, I know that when my car broke down it puffed a white smoke, and then it smelled like gas, i noticed gas smell in the OIL ... I wonder if there are still letfovers of old oil in the engine, I extract the old oil using a pump and replaced the oil filter but I'm sure that some of it still was left in the engine..
Slight grinding noise.... not sure if this will go away after some time , or maybe because there was fuel in oil something happened with the inside of the engine...
thoughts?
video below:
Thank you for all the help:
After working on this for few days. I managed to replace 4 injectors and 4 spark plugs on drivers side of the engine, What a major PITA, with wire loom getting in the way all the time. It was my first engine work project before I only replaced car stereos and bulbs in cars ....
So car started right away , there were clouds of smoke coming out from exhaust , and slight griding noise from the engine, I had it running in a garage for maybe 1 minute and shut down because of the smoke..... then I scanned the codes, and got no codes no misfire, but there are couple things that worried me in that 1 minute of running the engine,:
the white smoke, I know that when my car broke down it puffed a white smoke, and then it smelled like gas, i noticed gas smell in the OIL ... I wonder if there are still letfovers of old oil in the engine, I extract the old oil using a pump and replaced the oil filter but I'm sure that some of it still was left in the engine..
Slight grinding noise.... not sure if this will go away after some time , or maybe because there was fuel in oil something happened with the inside of the engine...
thoughts?
video below:
Last edited by Peterek82; 01-19-2022 at 03:33 PM.
#29
If your injectors dumped fuel for too long, your catalytic converter is probably saturated. I'd not worry about smoke too much, as long as it goes away. A new cat could possibly still be in the future.
I didn't really hear any grinding though.
Possibly still residual stuff?
Dunno man, don't listen to me. I'm old.
I didn't really hear any grinding though.
Possibly still residual stuff?
Dunno man, don't listen to me. I'm old.
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Peterek82 (01-19-2022)
#30
If your injectors dumped fuel for too long, your catalytic converter is probably saturated. I'd not worry about smoke too much, as long as it goes away. A new cat could possibly still be in the future.
I didn't really hear any grinding though.
Possibly still residual stuff?
Dunno man, don't listen to me. I'm old.
I didn't really hear any grinding though.
Possibly still residual stuff?
Dunno man, don't listen to me. I'm old.
At normal operating temp, the CAT runs 1200 -1600 degrees. Too hot is up around 1800 to 2000 degrees and is a classic sign it's filled with fuel.
#32
The white smoke will burn off after a little while of driving. I had the same issue each time after a stuck injector. It eventually burned off and cleared up. It may be embarassing for a few miles but it should disappear.
Listen to Cee Jay. He may be old (as he says) but he's not demented (yet).
Listen to Cee Jay. He may be old (as he says) but he's not demented (yet).
#33
what I picked up on is a noise in left side of engine white smoke heavier on left than right.
whote smoke - can be left over oil etc... My experience is replace the Positive crank case ventilator PCV in case it failed open and is pulling oil in - its cheap and easy to get to.
1. Change pil and filter
2. inspect plug and run a magent through oil look for any metal filings if none good
other than that don't rev the engine if you here a noise - the VVTs need to fill with oil before they are effective.
idle it and monitor to see of the smoke clears up or stays the same - should go away once it warms up about 10 - 15 minutes if not expect its a head gasket issue.
I got a 2009 Cadillac cheap with a small amount of white smoke thought it was because sitting in an auction yard for a year, to find out the head gasket was blown.
that is alot of smoke -
Good job on the engine work btw...
whote smoke - can be left over oil etc... My experience is replace the Positive crank case ventilator PCV in case it failed open and is pulling oil in - its cheap and easy to get to.
1. Change pil and filter
2. inspect plug and run a magent through oil look for any metal filings if none good
other than that don't rev the engine if you here a noise - the VVTs need to fill with oil before they are effective.
idle it and monitor to see of the smoke clears up or stays the same - should go away once it warms up about 10 - 15 minutes if not expect its a head gasket issue.
I got a 2009 Cadillac cheap with a small amount of white smoke thought it was because sitting in an auction yard for a year, to find out the head gasket was blown.
that is alot of smoke -
Good job on the engine work btw...
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Peterek82 (01-19-2022)
#35
To be honest I just disconnected the battery before removing the fuel line from the fuel rail, maybe a drop of fuel was there, no pressure at all.
the worst thing was the ignition wire loom; i had to disconnect abot 10 different plugs on front of the engine to gain some slack to move a wire loom away from plugs and injectors...
#36
Join Date: Jan 2015
Location: Naperville, Illinois USA
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You had an injector that was stuck open so you had no pressure.
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