Posted by Alan Services

Nissan Qashqai 2008 Miss Firing

Nissan Qashqai

Nissan Qashqai 2008 miss fireingThis car came in with a misfire

Engine Light ON (Service Engine Soon Warning Light)

Symptoms:

Chugging while driving.
Lack/loss of power.
Hard to start.
Engine hesitation.

But no fault shown on the diagnostic machine.

Nissan Qashqai Iridium sprak plugs
Plug No two faulty

 

What should have shown up on the diagnostics test was a P0302 code! that means that the cylinder 2 is misfiring or is randomly misfiring.

We Started by checking for intake leaks and when no leaks were found, the next step we took was to check the spark plugs.If you look at plug no 2, tip or centre electrode, you can see that the tip has burnt off.

The solution.

was a new set of plugs. Theses plugs are Denso Iridium. (changed every 100,000 miles).

When it comes to engine diagnostic you need to stop and think about the problem, and start by doing all the basic stuff first! the faults don’t always show up no matter what diagnostic equipment you have, so you have to think old school.

Ronan Kelly…

http://www.mechanicdublin.ie/

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