Re: Thoughts about intake manifold leaks, comments (archive)

Shiny new Bentleys' sitting on the desk, courtesy of Barnes & Noble (took approx 3 weeks international airmail but $12US shipping was heck of a lot better than $80US from Zygmunt - sorry guys, not worth iton an $80 item!!)

Re replace intake boots, there is a generic "Check fuel tank, fuel lines, and all connections for leaks" for both inspection I and inspection II - assume this could stretch to vacuum leaks.

Did also notice that there is a routine replacemnt for O2 sensors at every 60,000 miles...

Max

I used to have a mint 1988 316 1.8 that I really loved. It had 125,000 km (77,000miles) when I bought it and it suffered from crazy idle ranging between 500 and 1500 rpm.

What the dealer did NOT know and what I myself found out from quite another source was that this car was supposed to have the thick rubber seal under the carburettor (yep last year and last model of carburetted Bimmers) changed at every 80,000km. This had naturally not been done, the stealer had no idea such part existed and many 316 1.8 Bimmers I've seen have had the same problem, including the one POS my wife drives now.

WHAT IF the M70 engine (750i 5-litre V12) has a similar issue? What if you're SUPPOSED to change the intake manifold rubbel seals (is there one?) or gaskets every 80,000 or 100,000 or 150,000 km? (50,000 or 100,000 miles about) What if this information ALSO has not been told to the dealers - or they have but no one remembers it and none of us have taken our cars there for years - and thus the cars have not been serviced right concerning this issue?

What if you're supposed to tighten them every X km or something? I know the engine was designed to be very quiet so a lot of anti-vibration and anti-noise materials/design was used, such as the plastic cover thingy on top of the intake manifolds, could it be there are "too" soft seals/gaskets to prevent vibration and you're therefore supposed to tighten/replace them every now and then?

Those of you lucky enough to have already received their Bentleys (what the heck is wrong with those guys at zigmunt's???); is there a list of periodical services? are the intakes metioned anywhere?

Henkka
leaking like someone shot holes in the intake manifolds :-)

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