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I noticed a small oil leak on the cylinder head of my old 1.9 km saab TiD 280, the leak is located behind the glow plugs (passenger compartment side) on a plastic stud...

This engine is an Opel / Fiat base...and there are 4 studs and they are connected by a kind of strip (about 5 mm wide) which can rotate according to its largest dimension (free movement about 30°. ..)??

There is a hole in the center of the strap but nothing is connected to it (maybe something is missing?)

In the photo it looks like this:





I have no idea of ​​their usefulness or the strap? What is the function of these studs and their connection?

Is it serious doctor Macro? Does it change? Easily ?

ps: I connected the OBD this morning, I have no engine fault...

No idea, never seen that...

If it was a suitcase, I would have said handle.

Looks like a year ago on it, 22?

I think it's the swirl butterflies

Do we ever know:

The swirl is a kind of piloted butterfly that creates turbulence at low revs "like" (better than) a VSLA. On some engines, the EGR valve and breather take care of screwing it all up under a mountain of greasy gunk so that it ends up getting stuck in an intermediate position. The butterfly shafts may have forced / worn their housing until leaking / drooling.

Macro wrote:I think it's the swirl butterflies

My last engine lessons are very far (not sure to have heard this term)... in French what does it give?

Flytox wrote:The swirl is a kind of piloted butterfly that creates turbulence at low revs "like" (better than) a VSLA. On some engines, the EGR valve and breather take care of screwing it all up under a mountain of greasy gunk so that it ends up getting stuck in an intermediate position. The butterfly shafts may have forced / worn their housing until leaking / drooling.

Uh ok I understand better except that there is (more?) no control on it?

GuyGadeboisLeRetour wrote:Do we ever know:

It actually looks like this! I'll watch the full video tomorrow...

I am in the process of redoing a 2.5 tfsi audi block that has broken down because of this... A screw that held a butterfly screwed down and caused mayhem in a cylinder...