Dreaded Misfire!!!

[Stevej172]

So the problem started after I removed and refitted my injectors and top inlet. Took the car out and was fine for 10 minutes, then developed a bad misfire. This is mainly when warm and under load.

On investigating I pulled the lead off the injectors, pulling the leads off one injector made no difference while the others made it run worse. So I fitted a new injector, but hasn't helped.

So now I am thinking leads, coil or plug. But am I right in focusing just in this cylinder due to the above?

 

[william84]

Resistance check injectors.

 

[william84]

Any codes

 

[Stevej172]

Injectors are reading around 16ohms, where the old one was 14ohms.

No codes, but still running bad. Thinking leads or something now

 

[william84]

Pull the plugs and give them a clean.
When rebuilding ensure HT leads are are fully seated on plugs and be careful not to trap HT leads with top manifold

 

[Stevej172]

Couldn't see anything visually wrong with the plugs or leads. Got new one which seems to have resolved it 🤞

 

[william84]

Couldn't see anything visually wrong with the plugs or leads. Got new one which seems to have resolved it 🤞

Nice one

 

[Stevej172]

£100+ lighter and missed the CS rolling road day.... but hopefully it's fixed now.

 

[william84]

£100+ lighter and missed the CS rolling road day.... but hopefully it's fixed now.

What did you change?

 

[Stevej172]

New injector, leads and plugs in the end. Annoying as its happened in some way to all 3 clios I've owned.

If I ever own a 4th I think I will budget to change the injectors straight after I buy it!!