Bwm 318i 1990 engine m40 hunting periodically on startup

https://www.google.com/?gws_rd=ssl#q=Torque+settings+for+main+%26+bigend+bearings+on+bmw+e30+318i+m40+engine

Hope this helps

boot = trunk.
does not all BMW, have a lever that opens trunk from inside car?
and if you cant just tilt down the rear seat. then you cant.
takes tools. to remove it.
lost your spare factory key?
or stranded....???

find the lever. on some cars is near drivers seat other dash ,and others glove box lever.
I dont have BWM books.
but the glove box operators guide covers this, did you lose that too?

http://www.bimmerforums.co.uk/forum/f3/how-change-head-gasket-m40-engine-t21070/ Click on link to see.

install a battery tender this will mantain the voltage in the battery these work great and will not harm battery or car

www.batterytender.com

From what you're saying here, I believe that you simply have a bad battery. Most batteries only last 5 years, much less if they're left to sit in storage periodically. You really should charge the battery overnight and do a load test on it the next day. The person(s) you spoke to at BMW were probably sales staff and not actual technicians. Costco has very good batteries at reasonable prices.

your fan speed regulator located on your heater core box is bad if its just one or some of the speeds. if the fan does not work at all its either a bad connection to your fan speed regulator or the fan motor has quit. out

check fuses,could be fan switch or at worst fan motor,need to get it looked at,

If your wheel size increases and your tire size is reduced enough to allow free turning movement of the wheels when cornering YES

hi, check the rubber hose between the air box and the inlet manifold, it may be cracked causing it to draw in hot air from the engine bay! temp fix it by taping it up with elec. tape, otherwise you;ll have to replace it, hope this helps, steg

check to see if there is a vacum leak, usally pcv valve unit leaks at back of the maifold