XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

1996 xjs 4.0….Black soot out of tailpipe!

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  #21  
Old 03-03-2023, 07:09 AM
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Thanks for the responses.

Larry, I will contact you sometime today.

I probably not take a chance and drive it. I am in south venice….close by.

thanks

Softball60/Paul
 
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Old 03-03-2023, 08:19 AM
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Let us know how it works out.
 
  #23  
Old 03-03-2023, 01:18 PM
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Originally Posted by Vee
Clean oxygen sensors are very different than new. They are parts that wear, therefore have a limited lifespan. They should be replaced if you don't know how old they are, ...
Installed four new oxygen sensors today, emissions like a new car
 
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  #24  
Old 04-25-2023, 08:57 AM
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TO ALL,


After three (3) months of non stop working on a boat restoration project for my grandson……

I DECIDED TO…..

Well, let’s give it another go!

After meeting with Larry back in March ( Thank You for the help!….he was convinced it was not the catalytic converter…..I was not!

Although I was pretty convinced that it was the catalytic converter system……I DECIDED TO DO THE FOLLOWING

I pulled the EGR AND CLEANED IT (second time) AGAIN. The difference this time is that I also cleaned all of the ports with thin wire brushes and carb cleaner. I MEAN I REALLY SCRUBBED IT!!!!!!

It has now been two (2) days and no soot out of the tail pipe when it is cold started. I drove it around the neighborhood and the engine is running great!

I don’ t know if the EGR WAS CARBON BLOCKED OR SOMETHING ELSE CAUSED THIS ISSUE ON THE EGR…BARELY SEVERAL MONTHS OLD……..LOT’S OF CARBON/SOOT CAME OUT……MAYBE 27 YEARS WORTH.

Hopefully this is good news and NO EXPENSIVE CATALYTIC CONVERTER REPLACEMENT.

If anything changes I will let all of you know…..AND IT WON’T TAKE SEVERAL MONTHS CAUSE THE BOAT IS DONE!!!!

Thanks

Softball60/Paul
 
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Greg in France (04-25-2023), ptjs1 (04-25-2023)
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