Inlet manifold de-icing unit (IMDU)
This wraps around the intake to prevent fuel condensing when the original heat risers are blocked with carbon.
| Karmann Ghia | 1955 - 1974 |
|---|---|
| Baywindow | 1968 - 1979 |
| Trekker | 1969 - 1988 |
| Beetle Cabrio | 1949 - 1979 |
| Beetle | 1947 - 1979 |
| Splitscreen | 1950 - 1967 |
| Buggy/Baja | 1947 - 1979 |
If your engine fails to idle in chilly weather your inlet manifold might be freezing up.Temperatures do not have to go below freezing point to get this situation. With the acceleration of your gas mixture, it can "freeze" up your inlet manifold because the air is simply cold, too cold. That makes your gas mixture to shrink and poor filling of your combustion chambers.
Clogged preheater pipers on your manifold, incorrect warm air support from your engine to your air cleaner, wrong air cleaner, blocked winter valve ... poor air temperature can be various.
Our Reference: IMDU BBT4VW 2139
Located: Row 20 acc
