X5 V8 starting problem help

[RT/M]

Started the car this morning and it sounded as rough as fk and wouldn`t run smoothly tried it a couple of times it was the same thing, unfortunately i didn`t have time to investigate more as i had to get to work an alternative way, also didn`t want to cause any damage by keeping trying to get it to run properly, could it be a stuck hydraulic lifter or something any advise please

[scz4]

RT/M said:

Started the car this morning and it sounded as rough as fk and wouldn`t run smoothly tried it a couple of times it was the same thing, unfortunately i didn`t have time to investigate more as i had to get to work an alternative way, also didn`t want to cause any damage by keeping trying to get it to run properly, could it be a stuck hydraulic lifter or something any advise please

Are you low on fuel? My E39 4.4 V8 did this once, went into shutdown mode, sounded awful, I was convinced the engine had failed big time. Called AA, the diagnosed low fuel levels (still read 20 miles to go on computer), 1 gallon of fuel later, cranked it for about 60 seconds and it fired up again and ran smoothly.

p.s. don't blame me if it's not this.... don't want you to damage your engine :-S

[RT/M]

scz4 said:

Are you low on fuel? My E39 4.4 V8 did this once, went into shutdown mode, sounded awful, I was convinced the engine had failed big time. Called AA, the diagnosed low fuel levels (still read 20 miles to go on computer), 1 gallon of fuel later, cranked it for about 60 seconds and it fired up again and ran smoothly.

p.s. don't blame me if it's not this.... don't want you to damage your engine :-S

No definately not low on fuel, but thanks anyway

[E30M3SE]

Bit difficult to diagnose online from your description, but if it was running 'rough' then could it be misfiring? If so the get the codes read, could be failed coil pack, spark plug or sensor issues.

[RT/M]

unfortunately i`m still at work at the moment but will investigate further when i get home, i will say though it definately sounded pretty rough this morning and loud tapping/knocking, it was fine yesterday i even started it up a lot later after i got home for a few seconds just to move it forward onto the drive, then swithched off until this morning.I`m just hoping nothing serious (fingers crossed)

[cerb4.5lee]

My old 4.8is was terrible on a cold morning, it would hunt & threaten to cut out & i always had to keep the revs up before i actually set off, it never struggled to start but would struggle to tick over evenly.

I just got used to it & as soon as i drove off it was fine, i considered getting it sorted under warranty, its quite common on the v8s according to some forums, but i am not technically minded to describe the cause!

Hope you get it sorted easily.

[RT/M]

Thanks guys all sorted it was hydraulic lifters stuck, hopefully it will start easy tomorrow morning as i dont fancy getting soaked again getting to work