Tool AidK-Jetronic Fuel Injection Tester with Case

gauge works well, has all connections, as advertised. successfully checked and diagnosed 1985 Mercedes Benz 500sec for hundreds less than having it done by a shop. did also get a used manual specific to my injection for reference. would recommend to a friend. not the highest quality, but well worth the money, and great addition to any toolbox.

leaks like a broken faucet out of the relief button.

I have a Lotus Esprit, and with this kit I cannot test system pressure between the fuel pump and the fuel distributor,I have a large banjo bolt, like on the return side of the warm up regulator, feeding the FD, and while I can connect to the FD, there is no way for me to have a double ended female connection to hook up to the fuel supply from the pumps at the same time.You can still test a warm up regulator with it, but you cannot fully test fuel pressures like the service manual calls.How ever the gauge seems like decent quality, and I tested it with air to check its accuracy and it was spot on.

This tool is a must for working on CIS fuel injection systems. It is easy to use. However, it could use longer hoses so that you can be in the car and watch the gauge as you crank and start the enguine. Otherwise, works great and not a bad price.

Worked well for a 1977 450SL and a 1988 420SE . On thr 450 I even managed to hook it up in a way it bypassed the WUR, set desired fuel presure and test engine responsiveness to be 100% sure the WUR was my problem.

For the price...this kit may do the job, but imho is not worth the price. Fittings are very limited, the guage lens is made of plastic with a purge valve next to the guage. Fuel can easily get on the lens and begin to melt away the lens making it unreadable. I had another kit, a complete set sold by harbor freight, that was much higher quality although difficult to use with the CIS system because it had pressure valves in all the connections. As well, the kit I received appeared used or returned previously.

I purchased this kit for my shop as we started servicing older Mercedes. We got 10 uses out of it before the gauge fell apart (but was still somewhat useable) but there is a MAJOR issue we ran into. The threaded part of the adapters sheer off into the fuel distributor. The first time it happed I chalked it up to a heavy handed tech but then it happed again. The second time it happed required us to pull the distributor off the car causing 3 hours of extra work we didn't get paid for. Then yesterday, I personally was hand screwing the last of connectors into a distributer and it sheered off in my hand causing me to have to extract the broken thread and causing work to stop until I purchase a new test kit.

The unit was built as advertised and worked perfectly.