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Desperate for help! Bad cam shaft and now engine hunting

Ianbmws

By Ianbmws,
in BMW 1 Series Forum

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Ianbmws Newbie

Ianbmws

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Hi All,

First time posting on here. I bought a 118i F20 fitted with a B38 three cylinder. Cara has been great so far but recently the engine started playing up and was told it needed a new cam shaft. Found the funds to get it change, which was quite a lot. That was fitted and all was great. Now I have a problem that the engine hunts, goes from tick over to 2000 revs and back down again in a repeating cycle. No idea whats going on. But the garage seems to think the cam cover is leaking and has sent it off for pressure testing! this is very confusing for me. Any ideas would be amazing.

Cheers Ian

Greydog Grand Master

Greydog

Posted
Posted

Hi Ian

Welcome to the Forum

Have you checked for any air/vacuum leaks around the inlet side check all hose plus I have heard of issues with the tank ventilation valve. 

Hope this helps a bit

Dave

 

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