Vacuum hose diagram

[Jeff]

My 1988 R4 has the C1E 1108 1.1 engine. I’m looking for a vacuum hose diagram. There is a hose port below the carburetor. It appears to be in the manifold. Where does the hose connect? The engine will not run without the hose. When a hose above 5 inches long is connected to the port the engine runs well. Thanks, Jeff

 

[Andy McGhee]

My 1988 R4 has the C1E 1108 1.1 engine. I’m looking for a vacuum hose diagram. There is a hose port below the carburetor. It appears to be in the manifold. Where does the hose connect? The engine will not run without the hose. When a hose above 5 inches long is connected to the port the engine runs well. Thanks, Jeff

Hi Jeff
Does this help?

 

[Jeff]

 

[Jeff]

What’s the hose I circled in orange highlight?

Yes. This helps greatly! Thank you.

 

[Andy McGhee]

What’s the hose I circled in orange highlight?

Yes. This helps greatly! Thank you.

There's no hose there - it must be a trick of the light. Here's another view:

 

[Jeff]

Thanks for the reply. You are right. I see what you mean.

 

[JdeW]

Don't forget the restrictors. Sizes are in millimeters so 1,3mm for the lower and 5,5mm in diameter for the upper hose.

 

[Jeff]

Great! Thank you