Oil In Inlet Manifold And Tb

[RINRIN 1]

Hi,

 

Yesterday I went to a rolling test to setup my AFR values. I was trying to get 12.5 AFR at 6000rpm.

After setup it is ok in AFR but I realized that there was some oil on the ground.

I dismantled the AFR and saw that there is some oil in TB also. But it is more than the usual. now there is no leak at the bottom.

I seached for this but could not find anything.

So what is the case, is that normal? or ....

[chris-stdt 0]

Hi,

 

Yesterday I went to a rolling test to setup my AFR values. I was trying to get 12.5 AFR at 6000rpm.

After setup it is ok in AFR but I realized that there was some oil on the ground.

I dismantled the AFR and saw that there is some oil in TB also. But it is more than the usual. now there is no leak at the bottom.

I seached for this but could not find anything.

So what is the case, is that normal? or ....

 

This is fairly normal the inlet manifold and tb werefull of oil on my old 1.6 you just need to clean them out and clean every now and then

[DrSarty 90 1 Cars]

If you have OE oil breather piping I agree, as after time and perhaps some serious caning, depending on the condition of your oil and breather pipes you will certainly see some gunk in the inlet and throttle body.

 

Those noxious horrible vapours and fumes are fed back into the inlet tract for emissions reasons. That's why many people have oil breather/catch tanks.

[DamirGTI 342]

If you're removed wire mesh from the oil filler cap refit it back (but not the nasty OE steel one , buy some dish washing aluminum mesh and stuff it inside the filler cap) it'll help reducing the amount of oil entering inside the inlet tract via breather pipes ..

 

Damir

[RINRIN 1]

Many thanks, I will go for that