Hey guys,
It has been a while for me posting here, but i have been busy.
I am trying to narrow down a very slight misfire my 325i is experiencing, and i have pretty much the entire fuel, ignition and vacuum system overhauled.
From new style injectors, fuel pump, hoses, FPR, TPS, all gaskets, seals, new ignition wires, cap, rotor, coil, plugs and every sensor replaced. Only the AFM and ICV are original and within specs.
I adjusted the valves to 0.25mm clearance/gap a few months ago, both intake and exhaust. The misfire is more apparent when cold and sounds more of a valve issue when warm and only on idle, no matter what position is the accelerator pedal, it pulls flawlessly to redline, no hiccups, judders of any kind. Plugs are nice and tan-ish/very light grey in colour as well as the lowest compression test was 164psi and the highest was 170psi (warm engine and throttle was WOT), all other cylinders are around 165psi.
I was brushing through one of the German manuals i have, and i found this:
To translate Einlaß means intake, Auslaß is exhaust. It mentions on the second column than the intake valve should be set to 0.20mm when cold "only for swiss models". This has got me thinking, since my 325i is a Swiss model imported by the original owner to Germany back in 1997 (got all documents since then), maybe this is why, there is a slight misfire? it could be a long shot, but if it will cost me €7 for a new gasket and maybe 40 minutes to do, it is worth considering, but wanted to know if anyone here has heard of such a low clearance for the intake valves due to certain model/country cars before (i am also guessing the ECU/DME has been setup for this).
Any help/suggestion would be appreciated.
It has been a while for me posting here, but i have been busy.
I am trying to narrow down a very slight misfire my 325i is experiencing, and i have pretty much the entire fuel, ignition and vacuum system overhauled.
From new style injectors, fuel pump, hoses, FPR, TPS, all gaskets, seals, new ignition wires, cap, rotor, coil, plugs and every sensor replaced. Only the AFM and ICV are original and within specs.
I adjusted the valves to 0.25mm clearance/gap a few months ago, both intake and exhaust. The misfire is more apparent when cold and sounds more of a valve issue when warm and only on idle, no matter what position is the accelerator pedal, it pulls flawlessly to redline, no hiccups, judders of any kind. Plugs are nice and tan-ish/very light grey in colour as well as the lowest compression test was 164psi and the highest was 170psi (warm engine and throttle was WOT), all other cylinders are around 165psi.
I was brushing through one of the German manuals i have, and i found this:
To translate Einlaß means intake, Auslaß is exhaust. It mentions on the second column than the intake valve should be set to 0.20mm when cold "only for swiss models". This has got me thinking, since my 325i is a Swiss model imported by the original owner to Germany back in 1997 (got all documents since then), maybe this is why, there is a slight misfire? it could be a long shot, but if it will cost me €7 for a new gasket and maybe 40 minutes to do, it is worth considering, but wanted to know if anyone here has heard of such a low clearance for the intake valves due to certain model/country cars before (i am also guessing the ECU/DME has been setup for this).
Any help/suggestion would be appreciated.
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