Bosch K-Jetronic and KE-Jetronic Injection Systems

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The Bosch K-Jetronic system is a continuous mechanical fuel injection system that was widely used across many European vehicles from the 1970s through the early 1990s.

 

Unlike modern electronic fuel injection systems, which use sensors and an ECU to control fuel delivery, K-Jetronic relies on mechanical fuel meters and pressure regulation to deliver the correct air-fuel mixture into the engine. The Bosch KE-Jetronic system is an evolution of the K-Jetronic system, combining continuous mechanical fuel delivery with electronic control.

 

Both systems were widely fitted to classic and modern-classic European vehicles, particularly from manufacturers such as Mercedes-Benz, BMW, Porsche, Audi and Volkswagen.

 

Bosch K-Jetronic/KE-Jetronic Servicing

Over time, components within the K-Jetronic and KE-Jetronic systems like warm-up regulators, fuel distributors, injectors, and pressure regulators can drift out of specification or become contaminated. When this happens, common symptoms include poor cold-starting, rough idling, hesitation under acceleration, high fuel consumption and increased emissions.

 

These issues can detract from the performance and drivability of your classic vehicle if left unaddressed. Because K-Jetronic and KE-Jetronic operate differently from modern fuel systems, accurate diagnosis and adjustment requires specialist knowledge and experience working with mechanical injection systems.

 

Bosch K-Jetronic/KE-Jetronic Diagnosis & Repair

At Auto Service & Tuning Centre, our technicians have the tools and expertise to work confidently with Bosch K-Jetronic and KE-Jetronic systems. We are experienced in performing thorough inspections, precision fuel pressure testing and calibrated adjustments.

 

Whether it’s restoring original performance on a cherished classic or resolving drivability issues on a vehicle that has been in regular use for decades, we combine methodical testing with deep technical understanding to ensure your system functions as it was designed to.

 

Benefits

Why You Should Book our Wheel Alignment Service

Lower emissions & better fuel efficiency

Improved cold starting & engine stability

Restored performance & smooth drivability

Protects the value of your classic vehicle

Testimonials

See What Our Customers Say

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Chloe Gunstone profile picture
Chloe Gunstone
2026-03-06
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Excellent experience with Bosch. We had our car for 8 weeks at another garage with no progress and decided to take it to Bosch instead. They got our car in earlier than expected and diagnosed the issue quickly and kept us updated throughout. Pete was especially helpful, friendly and a great guy who is super responsive which we really appreciated. Would definitely recommend it to anyone looking for a responsive, honest and fair priced garage. Thank you so much!
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G H
2026-02-14
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Impeccable Service | 4 Wheel Alignment | Camber + Lowering Kit Best service by Luke at Bosch Autocentres in Hitchin After bad experiences at other mechanics, it was refreshing to have such a great experience at Bosch. They were incredibly helpful for weeks of planning as I was ordering parts from overseas, happy to learn and adapt to fit the new N2itive lowering links and camber and toe arms on my Tesla. Luke discussed with me throughout the service what I wanted and what was possible on the car. It's by no means a simple process either but he was very good at figuring out what to do. Beyond this he went above and beyond happy to help adjust the headlights and reset the adas system as things I mentioned I would need to find a flat surface for to which he offered to sort whilst it was there. The 4 wheel alignment was also dialled in perfectly, again not an easy task with factory parts and even with new parts can be tricky. Checking the data sheet, it was actually rare to be able to get into this spec on this car. I would say I'm very particular in what I wanted and picky in choosing a place I trust. Bosch has earned a new customer and delivered a fair price for the quality of work. What would you pay for trust in a mechanic...
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John Offord profile picture
John Offord
2025-12-05
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Truly excellent. Old-school customer service (knowledgeable, polite, prompt - thank you Simon), clean and smart premesis and (obviously) competent technicians. Solved the fuelling problem on my mum's 30 year old Audi quickly and effectively and without any drama. Along with bill (quite reasonable), I was presented with a bunch of photos evidencing problem and solution. Why can't all garages (companies) be like this? Wouldn't hesitate to recommend or return. Thank you.
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John Roberts profile picture
John Roberts
2025-11-18
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I have a diesel Merc E Class that had a series of sensor issues to the ABS system following wheel bearing replacement. Bosch Hitchin carried out the repairs and followed up with further diagnostic checks and repairs when the sensor glitch continued. When things didn't go to plan from the first repair the followed up with excellent customer service and first class work. I would highly recommend to anyone who is thinking of using their services.
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Julie Sales profile picture
Julie Sales
2025-09-28
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We took our Mercedes Marco Polo to the Bosch Auto Service and Tuning Centre with an ABS warning light appearing on the dash. Diagnosis was speedy and the relevant part was ordered and fitted in no time at all. Excellent communication every step of the way, from initial booking to final collection of our vehicle. An incredibly efficient and professional team who offer a very friendly and personal service. A huge thank you to all. Julie Herrtage
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Diary of a Beach Hut Beach Hut Rental
2025-09-15
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I took my SEAT ARONA in for a full service this morning. I have just picked up and cannot rate this place enough. The staff greeted us this morning and explained what the service entailed. Having just collected I had to go back in and thank the guys for my beautiful clean car which has had a full valet . Even the tyres have been buffed. We will definately be bringing our car back for its next service. I can only describe the experience as good old fashioned service !! Thanks team Allison
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Sarah Anderson
2025-07-11
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Excellent service thanks. Sorted out my Audi automatic gearbox issues quickly and efficiently. A delighted customer!
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andy mason
2025-07-04
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I am very happy with the work done to replace a NOX sensor on my Mercedes, they explained the issue and were confident on fixing the repair, do the diagnostics and software coding.
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Adam profile picture
Adam
2025-04-25
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Excellent service and quality work. I can't recommend these folks enough. The team is always very clear about any work needed, why, as well as timelines. They're great at providing advice.
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Steve Evans profile picture
Steve Evans
2025-01-16
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I’ve been using Bosch car service in Hitchin for my previous Audi and now Mercedes for many years. The quality of the team and service they provide is simply outstanding. Professional, good communication and experienced. No need to look anywhere else.
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Auto Service & Tuning Centre is proud to provide a fully comprehensive range of professional, high-quality vehicle repair and maintenance and diagnostic services to Hitchin, Hertfordshire and beyond. Our Bosch certified team specialise in German cars, including BMW, Mercedes, Porsche, Volkswagen, Mini, as well as other prestige car brands such as Range Rover & Jaguar. We work with all common models and engine types, including petrol, diesel, electric, and hybrid.
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