smoke from dipstick/catch can/oil cap

[mccarthy69]

turbo m20 will list specifics after post. Got it up and running after rebuild and turbo install but noticed a lot of smoke from my catch can, also oil cap and dipstick when removed ( whitish smells like raw fuel) . Some brief searching came up as probably condensation , since it was still chilly out and had not driven car a lot figured i would put some miles on and work on the tune. so now its end of june hot out put a couple hundred miles on it runs great cruising and ok idle, runs ok for boost but i'm still working on tune for that but still have a good amount of smoke. any ideas? compression came back good , no external leaks etc.

whats in the car:
m20 2.7 "e" bottom end with all new bearings/rings/seals etc
arp head studs
stock headgasket
ebay manifold t4 external wastegate
no name turbo 70a/r 6662
42lb injectors
FI tech fuel pump 6an feed and return with fuel cell (support to 600hp)
billet fuel rail
10mm wires with bosch cap and rotor
msd 6al and blaster coil
megasquirt (spectre ems pro) basically ms1
aluminum radiator and silicone hoses, no heater core connected
15w40 oil

[e30davie]

Hows the AFRs? if you are pouring fuel in and running rich as i suppose it could get past the rings and then come out your dipstick.

[jstoll]

I have a turbo M20 E30 running MS2 ... its important to get your tune worked out to where its not over rich ... seating rings with a really rich mixture can screw things up... smell your oil and make sure it does not smell like fuel.. if it does change it before you take out your bearings
can you take a video of the blowbye? all engines have blowbye... if its excessive do a leakdown test... does teh blowbye pulse?? if it pulses it may indicate a problem on one cylinder ... you can run a compression test to pinpoint the source ...
PM me and ill get you my number and we can text or do a phone call ...
take care
JAK

[mccarthy69]

I have a turbo M20 E30 running MS2 ... its important to get your tune worked out to where its not over rich ... seating rings with a really rich mixture can screw things up... smell your oil and make sure it does not smell like fuel.. if it does change it before you take out your bearings
can you take a video of the blowbye? all engines have blowbye... if its excessive do a leakdown test... does teh blowbye pulse?? if it pulses it may indicate a problem on one cylinder ... you can run a compression test to pinpoint the source ...
PM me and ill get you my number and we can text or do a phone call ...
take care
JAK

the tune needs work for sure. Ill check the oil and see how it smells tomorrow when i go outside and change if needed. haven't done leakdown but compression was 170+ across the board no differences more then 2psi between cylinders, blowby does not pulse just a steady flow of smoke

Hows the AFRs? if you are pouring fuel in and running rich as i suppose it could get past the rings and then come out your dipstick.

this does make sense the afrs are not perfect but, cruising between 14:1 and 15:1 idle a little richer around 13:1 and going for closer to 12:1 under boost.

[SLEEPYDUB]

I wouldn't consider that rich at all