Classic Car Diagnoses
Focused insight into classical technique
A correct diagnosis is the foundation of every successful repair or restoration. For classic vehicles, this requires more than just a computer or error code. Classic cars demand experience, technical insight, and knowledge of mechanical systems. At The Oldtimer Factory , we perform diagnoses with respect for the original technology and avoid unnecessary replacements.
What is classic car diagnosis?
Classic car diagnostics involves the systematic analysis of complaints and abnormalities in a classic vehicle to determine the root cause. Examples include starting problems, poor running, loss of power, overheating, vibrations, or unexplained noises.
Instead of randomly replacing parts, we examine the entire system: mechanical, electrical, and functional. This way, we avoid incorrect interventions and unnecessary costs.
Why diagnosis of a classic car is so important
Classic vehicles are often built without electronic controls or modern sensors. Problems are rarely straightforward and often arise from a combination of wear, adjustment, and aging . An incorrect diagnosis can lead to expensive but inefficient repairs.
What can we diagnose?
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Mechanical diagnosis
Engine running and sounds
Compression problems
Oil and fluid loss
Vibrations and drivetrain problems -
Adjustments and walking problems
Carburetors
Ignition (mechanical & electronic)
Idle and cold/warm start -
Electrical diagnosis
Classic wiring
Charging systems and starter motor
Lighting and switching -
Driving behavior and complaints
Loss of power
Irregular gait
Overheating
Brake or steering problems
When is a diagnosis appropriate?
- In case of starting problems or poor running
- For purchasing a classic car
- Before or after restoration
- For recurring or unexplained problems
- After a long period of inactivity
- In case of starting problems or poor running
- For purchasing a classic car
- Before or after restoration
- For recurring or unexplained problems
- After a long period of inactivity
Listen and analyze
We start with your explanation of the complaints and the use of the car.
Thorough inspection
Visual inspection, mechanical checks and targeted measurements where necessary.
Technical assessment
We analyze the cause, not just the symptom.
Advice and proposal
You will receive a clear explanation of the findings and possible solutions.
Decision in consultation
Repairs or adjustments will only be carried out after your approval.
CO measurement and adjustment for classic cars
At The Oldtimer Factory , we perform CO measurements as part of a targeted diagnosis or tune-up. Using exhaust gas analysis, we precisely adjust carburetors and ignition to the engine's specifications and characteristics. This ensures smoother running, improved throttle response, and a more enjoyable driving experience, without compromising the original technology.
A correct CO2 calibration isn't a standard value, but a custom solution—tailored to the engine, configuration, and use of your classic car. This way, your classic car stays reliable, smooth, and technically balanced.
Need a diagnosis done?
Are you unsure about the condition of your classic car or are you experiencing a technical problem? A correct diagnosis saves time, money, and frustration.