Audi S4 V8 engine
Discussion
Love the exhaust note on these cars so toyed with the idea of an Avant for my daily, bit of searching suggests all is not well on the long life service plan Audi recommend though, cases of cam chain tensioners causing expensive problems are not uncommon.
This is the rear view so it has to come out to fix it apparently.
This is the rear view so it has to come out to fix it apparently.
Edited by blade7 on Monday 2nd January 16:54
Cupramax said:
Yep, its an engine out job IF they go. Audi dont recommend long life service if you're doing mainly short journeys, its only for cars doing 15k or over per year mainly long journeys. If I was going to keep a car for myself it'd have an oil change every 10k.
Think there was mention of the chain guides causing problems too, some owners were talking about oil every 5-6k to be on the safe side and avoid the £3k+ bill to sort it out.
It's not really to do with OHC as such, more that Audi have a front longitudinal engine and 4wd gearbox, where the front differential is in the main tranny. Hence, in order to not have lots of engine sticking out the front (and ruining the balance) they have to get the engine as short as possible, hence the rear chain drive solution.
Rattling chains on start up is common on these, although the rattle should go within a second.
These cars are just starting to creep to 100K miles and so more problems are becoming apparent.
Lack of care is the main reason.
My V8 is running sweet with regular oil changes and services.
Best to try and pick one up with reasonable mileage, and well documented history.
Overall though, these engines are fairly bullet proof.
These cars are just starting to creep to 100K miles and so more problems are becoming apparent.
Lack of care is the main reason.
My V8 is running sweet with regular oil changes and services.
Best to try and pick one up with reasonable mileage, and well documented history.
Overall though, these engines are fairly bullet proof.
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jason s4 said:
Rattling chains on start up is common on these, although the rattle should go within a second.
These cars are just starting to creep to 100K miles and so more problems are becoming apparent.
Lack of care is the main reason.
My V8 is running sweet with regular oil changes and services.
Best to try and pick one up with reasonable mileage, and well documented history.
Overall though, these engines are fairly bullet proof.
Doesn't really look like a diy job if there are problems though, on one of the forums an Audi tech suggested good cars could be scrapped when it becomes uneconomic to repair the engines.These cars are just starting to creep to 100K miles and so more problems are becoming apparent.
Lack of care is the main reason.
My V8 is running sweet with regular oil changes and services.
Best to try and pick one up with reasonable mileage, and well documented history.
Overall though, these engines are fairly bullet proof.
.Had an S4 V8 for a couple of years, only problem I had was a new starter motor as they like to stick now and then , eventually giving up. Apart from that it was solid as a rock. Timing chain rattle should only be noticable for a second on startup and certainly not something to be overly concerned about.
As with any modern V8 if the engine goes its time to fake your own death get the canoe out and paddle for panama!
Make sure you check both aux rads in the front of each wing, well documented that they rot and give up, mine had both replaced.
The only downer with these cars is the gearing, the manual cruises at 3.3-5rpm and as a result loves a drink, its one car where the auto is better on mpg and will cruise at 1.5rpm. On the upside the car is amazing in the snow, never forget being turned back by a police car as they were stuck on a hill, being told "you wont make it!" only to tootle past him dissapear over the hill with ease...
After the s4 Ive had a 6.0 Vxr8, a C55 AMG and now an ISF. All are better on fuel!! Just put this down the the gearing and perm 4x4 as opposed to the haldex TT's etc.
As with any modern V8 if the engine goes its time to fake your own death get the canoe out and paddle for panama!
Make sure you check both aux rads in the front of each wing, well documented that they rot and give up, mine had both replaced.
The only downer with these cars is the gearing, the manual cruises at 3.3-5rpm and as a result loves a drink, its one car where the auto is better on mpg and will cruise at 1.5rpm. On the upside the car is amazing in the snow, never forget being turned back by a police car as they were stuck on a hill, being told "you wont make it!" only to tootle past him dissapear over the hill with ease...
After the s4 Ive had a 6.0 Vxr8, a C55 AMG and now an ISF. All are better on fuel!! Just put this down the the gearing and perm 4x4 as opposed to the haldex TT's etc.
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