Car came into the workshop with rough idling and sluggish movement. Excessive black smoke from exhaust tail pipe.

Car was scanned usig the autel maxi Sys elite by mayor and we had the following fault errors retrieved from the powertain control module:

1) p2432- secondary air injection system air flow/pressure sensor circuit low, bank 1

2) p2431- secondary air injection system air flow/pressure sensor- circuit range /performance, bank1

3) p2610- engine control module/ powertain control module internal engine off timer performance

4) U0167- lost communication with vehicle immobiliser control module

5) P0303- cylinder 3 misfire detected

6)p0307- cylinder 7 misfire detected

7) p0300- Random cylinder misfire

p0313- misfire detected with low fuel

First thing was to have the codes cleared and go for a spin and rescan to see what faults we have left after car has gone through a complete drive cycle. After clearing what we had the remaining faults

Jaguar XJ8

Pix of engine bay for a general overview

mayor2013:
Jaguar XJ8

Hmmm. Following

Heavily misaligned engine bay.

I love the Jaguar C-X75.

Shagati:


Hmmm. Following

Baba... Where EgunMogaji

Jagermeister:
Heavily misaligned engine bay.

I love the Jaguar C-X75.

I take an exception to this. Did you follow the Lexus is350 2006 engine replacement

A brief explanation to the secondary air injection system. This system helps build up oxygen through a vacuum line which is reused for combustion process. We would majorly focus on the misfire faults because we worked on a very tight budget

mayor2013:


I take an exception to this. Did you follow the Lexus is350 2006 engine replacement

No. If you would be magnanimous enough to post the link, I will.

Jagermeister:


No. If you would be magnanimous enough to post the link, I will.

Don't derail, it's easy to find

princetom1:


Don't derail, it's easy to find

Hol' up Tommy... you hungry? You had dinner?

To start this we would commence with the removal of the negative terminal of the car's battery to avoid any form of electrical mishap. This ride came with a Bosch battery with a cold cranking capacity of 850 at 0 degrees Fahrenheit

princetom1:


Baba... Where EgunMogaji

Not seen that bros in ages.
He's riding motorcycle upanadan somewhere I'm sure

Shagati:


Not seen that bros in ages.
He's riding motorcycle upanadan somewhere I'm sure

Maybe grandpa goes for another honeymoon.

Jagermeister:


Hol' up Tommy... you hungry? You had dinner?

Poor Tom

Reporting to class, hope am not late.

...

Sounds like bad fuel has clogged up the injectors spray and fuel filter causing a reduced fuel pressure.

Think the pressure at fuel rail should be checked, but replace fuel filter first and spark plugs as a maintenance items

princetom1:


Poor Tom

Lol

After removal of the negative battery terminal we proceed by inspecting all 8 spark plugs and 8 ignition coils and also throttle actuator. Throttle body was found to be very dirty as a result of misfire issue

One of the ignition coil was found to be defective since we worked on a very tight budget we would be replacing just only 2 spark plugs. With the condition of the throttle body above note that the throttle valve cannot be easily controlled due to the sticky carbon henceforth one of the reasons for the misfire

We would be using Bosch double platinum sparkplugs ordered directly from Germany . Bosch parts have been my favourite they never disappoint

Next is going to the inlet manifold plenum to have it properly cleaned up from all forms of carbon deposits. Pix depicts the removal of a 10mm threaded bolt close to the firewall in the engine bay

I love to take out the inlet manifold plenum to remove all form of carbon deposits. A part of what we do to get the job well done .

It I'd very disturbing that someone using a jaguar can only afford to replace 2 spark plugs out of 8.

It does not matter what brand you drive if you can't afford $24 for a part you replace every 6 years and a fuel filter then you should not be driving a car because you might cut back on brakes which is more expensive then killed someone

sultaan:
It I'd very disturbing that someone using a jaguar can only afford to replace 2 spark plugs out of 8.

It does not matter what brand you drive if you can't afford $24 for a part you replace every 6 years and a fuel filter then you should not be driving a car because you might cut back on brakes which is more expensive then killed someone

Well said.

It's befuddling, the risky and sometimes downright dangerous compromises people are willing to make with their automobiles.

Pix of inlet plenum manifold with oil soaked inside. Blocked oil breather can be responsible for this

Removal of fuel injectors next. To achieve this the manifold needs to come out. The aluminium base needs to be stripped away from the inlet manifold plenum to have a proper access to the fuel injectors. You need to be careful at this junction so as not have cause damage to the injectors. A penetration oil would be sprayed to have it easily removed

All 8 Fuel injectors removed and ready to be transported to the fuel injector cleaning machine with ultrasonic bath

mayor2013:
All 8 Fuel injectors removed and ready to be transported to the fuel injector cleaning machine with ultrasonic bath

Oga Mayor I hail o. Longtime!
You didn't show me the ultrasound thingy when I visited

Piyke:


Oga Mayor I hail o. Longtime!
You didn't show me the ultrasound thingy when I visited

Am very sorry. When next you come around I will been a while

mayor2013:


Am very sorry. When next you come around I will been a while

Just kidding. More power to ya elbow!