Today there is an extensive campaign for the Saab 9000. The Anna project receives a new cylinder head gasket, all hoses in the engine compartment are replaced. The operation was foreseeable. Because the Saab's engine blog had been slightly oil-damp for several years. The motto was to watch. Take action when it becomes acute.
The first symptoms appeared 5 years ago. Harmless, a damp oil mist in the area of the ZKD. The screws were tightened in Frankfurt and there was advice to keep an eye on the matter. It went well for some summers. In 2018, the 9000 treated itself to half a glass of water for the cooling system in midsummer. 2019 also.
The “breakthrough” came in winter 2019/20. The oil moisture increased, the time to act had come. Another wait would be dangerous for the engine and irresponsible to the environment. Old cars yes, environmental mess no. So that the operation really makes sense, I still order Silicon hoses for the Anna project. Do88 delivers quickly, the 9k comes to the Saab Hospital in Frankfurt for a few days.
A new cylinder head gasket after around 22 years is no exception. But it is not the rule either, there are older Saabs with absolutely dry engines in my hall. Why it affects one engine, but not another, cannot be understood.
Test drive. A connector does not withstand.
Saab Service Frankfurt works fast. The new cylinder head gasket is not a big deal, nor is the exchange of the hoses and the associated clamps. In addition, all vacuum hoses are replaced. They are inexpensive sold by the meter and the exchange was necessary, as I see when looking through the porous old parts. In the course of the work, some small parts will be replaced. In the past two decades, a number of attachments to the insulation mats and the cladding in the trunk have been lost. They are all supplemented, the torn paneling of the water tank is replaced by an undamaged used part.
The cylinder head gasket was necessary. Likewise the preventive exchange of the hoses. The first test drive after the operation is completed shows how advisable it was. A still original connector does not withstand the pressure of the new hoses. It bursts for the first few kilometers and will also be replaced after returning to the workshop.
The theory of preventive exchange has thus been confirmed. 20, 22 years are enough and time for new, safe silicone hoses. They are primarily recommended for turbo engines that are subject to higher thermal loads. But owners of classics with naturally aspirated engines should also get used to it.
How does the retreaded Saab drive? The engine is quieter, which can be assigned to the new hoses. The feeling is better, more trusting. What has to do with psychology? The story of the Anna project is not yet finished. There is always something to do, even if it is small things. And Anna keeps rolling. She is only 22 years old.