Cl9 engine issue (really need help)

[thomwootton19]

Hi guys I've had my cl9 for a couple of years now and ever since I've had it, on and off, the engines power isn't smooth.. It's awful and lumpy and around 5500 it refuses to rev anymore like then engines power is being halved. Obviously most evident when heavy throttle used

Not much info on the net hopefully someone can help a brother out ?

Thanks in advance

[Jasemas]

Is it an auto or manual?

[thomwootton19]

a manual mate,

having my mechanic plug his competure into it friday, will post results!

[EKVTIR-T]

yeah I would have said check for ecu error codes

also make sure the basics are correct,oil level spark plugs clean air filter etc.

[littlebo]

first of all check for compression !

[thomwootton19]

compression?

i was thinking its a fuelling issue. will post results

[littlebo]

Yep, if its stable for all 4 pistons. if fuel pump is weak then you might have power dips in higher revs and lean afr CEL.

[thomwootton19]

that sounds like it! at like 5000 rpm it feels like it leans out heaps..

wonder how to upgrade fuel pump..

[littlebo]

Fuel pump is a rather weak point , check fuel rail pressure while pump on , idle , under load.

[thomwootton19]

How do I complete such a task?

[ECU-MAN]

could be a bad ignition coil

[littlebo]

If you dont have handy guys around then stealership is only option... ECU-MAN , it could be bad anything, faulty coil will do misfires or detonation , this can be rather easily be found.