Intake Manifold Inspection

[AngryRB]

After what im certain is a vacumn leak from the intake manifold ( top part gasket) , diagnosed by spraying the outside with WD40

now just notice that the runners 1 and 2 are squeaky clean looking and the others ( 2. 3.4 and 5) are quite dirtly looking, looks like soot maybe but could be from when the blowby return used to be on there..

so i guess just want to check, im assuming the WD40 cleaned the runners that had the leak?, is that right or does the engine has some underlying issues?

[AngryRB]

any thoughts?

Edited July 21, 2012 by SliverS2

[nick81xd]

how many klms on engine? stock engine?. its not uncommon for oil residue to form around the gaskets on intake, replace plenum gasket and the runner gasket and you will be back running again

[AngryRB]

yeah thats probably normal, was just wondering why the 2 runners were noticably cleaner, but guessing it the vacumn leak and wd40 i sprayed on it when it was all assembled...

[nick81xd]

Some cylinders are leaking more then others. clean it all and replace gasket. If it oils up again then you might have a engine issue