[Wolf]

Picked up a NGV Saturday with the 2.7, Changed the oil today as the kld was dirty as and replaced with 10w40 shell, Now when I use the throttle I hear a rattle on decel. it does have a bung coil atm but when it was missfiring before the oil change I never heard the rattle.


Cheers

[tanshi]

timing chain replacement

[Bruce]

100% agree with tanshi. Timing chain

[Wolf]

would an oil change make it appear?

[fordem]

It can, depending on the oil & filter you use - the chains have hydraulic tensioners, too thick an oil and you won't get the flow you need (and consequently the pressure) at the tensioner, so it rattles, use a filter without an anti-drain-back valve and the oil drains back when the engine is off, same result.

[Wolf]

I got my partner to rev the car last night and I had a listen around thr car. Sound wasent premenant in the engine bay and wasent loud at all when I had my ear to the engine. sounded like it was comming from around the transmission area. maybe loose heatsheild

[Gwagensteve]

Or a disintegrating catalytic converter.

[Wolf]

Gwagensteve wrote:

Or a disintegrating catalytic converter.

Seeing as it thew 0420 and 0430 and was missfiring may well be. ill try ask around if anyone has a scope i know to have a look down the o2 sensor hole