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Hi,
I am a newbie to the forum although I have owned Maestro Vplas since 2008.
I recently bought a clove brown vplas C818 MMW. It has a low mileage of 56890 miles apparently. I drove it back from Salisbury and it had some hesitation at times and refused to accelerate until I backed off the accelerator. When I first looked in the engine compartment I saw the carburettor & manifold vacuum setup has been seriously modified. The vacuum switch has been removed and the 2 rubber tubes to the carb bunged up the. The T piece which goes to the manifold is present but disconnected to the air filter, and plugged at the other end. A single tube went to the back of the carb and the vacuum from the ECU went direct to the vacuum switch inlet. Needless to say the carb has been setup quite differently to the correct one. Fast idle doesn't appear to be set properly.
I tried resetting it to what I deduced from the BL workshop manual and your forum reconnecting the vacuum switch etc; It became difficult to start, but then when I test ran it up the A5 it had lost it's hesitancy, but replaced it with under power. I read about the ORFCO valve and bought one & when Inspected the old one it was indeed sticking in the down position i.e closed so that should have helped to cure some part of the problems, but the car is now refusing to start
What I need to know but can't find in either haynes or BL manual is what is the full route of the manifold vacuum tubes, and what is the route of the carburettor ECU (advance/retard) vacuum tubes? Can anyone tell me please what this is?
Next I inadvertently failed to note the connections to the ORFCO valve. Is the correct connection critical to it's operation? I know they are white/ grey & green and one goes to the ECU?
Any help will be greatly appreciated
Thank You.
Paul.
I am a newbie to the forum although I have owned Maestro Vplas since 2008.
I recently bought a clove brown vplas C818 MMW. It has a low mileage of 56890 miles apparently. I drove it back from Salisbury and it had some hesitation at times and refused to accelerate until I backed off the accelerator. When I first looked in the engine compartment I saw the carburettor & manifold vacuum setup has been seriously modified. The vacuum switch has been removed and the 2 rubber tubes to the carb bunged up the. The T piece which goes to the manifold is present but disconnected to the air filter, and plugged at the other end. A single tube went to the back of the carb and the vacuum from the ECU went direct to the vacuum switch inlet. Needless to say the carb has been setup quite differently to the correct one. Fast idle doesn't appear to be set properly.
I tried resetting it to what I deduced from the BL workshop manual and your forum reconnecting the vacuum switch etc; It became difficult to start, but then when I test ran it up the A5 it had lost it's hesitancy, but replaced it with under power. I read about the ORFCO valve and bought one & when Inspected the old one it was indeed sticking in the down position i.e closed so that should have helped to cure some part of the problems, but the car is now refusing to start
What I need to know but can't find in either haynes or BL manual is what is the full route of the manifold vacuum tubes, and what is the route of the carburettor ECU (advance/retard) vacuum tubes? Can anyone tell me please what this is?
Next I inadvertently failed to note the connections to the ORFCO valve. Is the correct connection critical to it's operation? I know they are white/ grey & green and one goes to the ECU?
Any help will be greatly appreciated
Thank You.
Paul.
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