Manifold Pressure

[texdog]

My RV6 has a Grand Rapids Technology engine monitor and the Manifold Pressure gauge isn't working. Where would I find the sensor?
Thanks.

 

[RV8TOR]

Check on the backside of one of the cylinder heads near the oil return line that runs from the head back to the sump. There is a 1/8 NPT hole there that is often used for MP. Probably on one of the rear cylinders.

 

[rzbill]

Charlie is right about the connection to the engine.
The sensor will be on the other end of that line connected to the engine.
It is likely inside the cabin rather than in the engine compartment.
it is a black plastic box about 1 inch by 3 inch by 4 inches with a small plastic tube on one end and a dsub on the other.

 

[texdog]

It gets worse. The intake gaskets were bad, replaced those and RPM is normal. Didn't fix the manifold pressure, I did a run after warming the oil temp. to normal and on runup the oil pressure went up to the red line as RPM INCREASED.