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Re: beware v8 hydro-lock
> this can also happen if you do too many cold starts with an engine that
> never has a chance to get warm. each time you initiate a start on a cold
> engine, the motronic system will dump a s***load of raw fuel in there. if
> your engine never gets a chance to warm up that raw fuel never gets
> completely burnt away. and if you repeat this enough you will end up with
Hmmm ... using nice round numbers, let's assume that each cylinder displaces
500cc and has a 10:1 compression ratio. In order to hydro-lock a motor, you
would have to dump at least 50cc of fuel into a cylinder, which seems like a
LOT even under maximum enrichment cold-start conditions.
> milder symptoms are a terrible stutter where not all cylinders are firing
> upon subsequent start ups.
This can (and does) happen with a lot less than 50cc of fuel ... just having
slightly leaky injectors can cause this.
> moral of the story: do not cold start the v8 without driving it for at
> least half a mile before killing/restarting. pulling it out of the garage
> for a wash and then pulling it back in is a big no-no. push it if you
> have to!
After washing the engine, I've sometimes had to push it back INTO the garage
because it won't start but otherwise this sounds like overkill to me...
/ l l o l \ l o Jeffrey Goggin
/__l l l / l l l l l l / l l * * * * * * *
/ l l_l \_l l l__/ l_l \_l l AudiDudi@delphi.com