m30 misfire and coolant pressure problem

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dubownerbilco
E30 Zone Newbie
E30 Zone Newbie
Posts: 192
Joined: Fri Dec 17, 2010 11:00 pm

Post Mon Nov 19, 2012 5:11 pm

so i have got my m30 conversion up and running

but just having a couple of issues:

when cold the engine is fine and will rev without a problem but as it warms up the misfire becomes more obvious and almost undrivable past 1/4 throttle. i fitted a speedtouch chip and let it tickover for ten minutes as instructed and this made no difference

also after having a brief drive in the car and letting it tickover for a while i noticed that the coolant hoses were rock solid and were visibly larger! all the hoses are connected as per the guide and i bled it without a problem :S

neither of these were issues when the engine was still fitted in the 5, as i used it for a week prior to removing the engine

any ideas people?

thanks in advance