K-Jetronic fuel pressure tester

[shabazmo]

I need to purchase a K-Jetronic pressure tester. There are quite a lot of fuel pressure testers around, but not sure which one to buy.

Can anyone point to the best type to purchase and where to buy it.
Thanks

 

[BlackC55]

The Sealy kit is good but interpretation of the pressures you will see is vital.
KMI in London are the guys to test your K-Jet system. They are really really good.

 

[shabazmo]

Thank you BlackC55. I have today contacted KMI and found them extremely helpful in the nicest possible way. I will certainly be using them if I can fox the problem myself.

 

[optimusprime]

shabazmo You need to tell us your problem to get help .

 

[shabazmo]

Thanks Optimusprime. I have trouble starting the engine when hot and when cold. This happens only after I switch the engine off for at least 20 minutes. Otherwise it will start very quickly. I think I am loosing pressure in the fuel system but to prove this I need to attach a pressure tester to the fuel line.

So time to invest in a fuel pressure tester but which one should I choose.

 

[Petrol Pete]

OP , have you replaced the crank position sensor ?

 

[shabazmo]

No, I am sure it doesn't have one. 1985 k-Jetronic system.

 

[Jobsworth]

Sounds like a weak accumulator to me, but total guess from this range. I’m in Billingshurst and have a test kit I’d lend if you left a deposit

 

[IanW]

I had the same problem with my 1989 Audi 90 - actually KE-Jetronic, but similar in design. By following the test Bosch test instructions, I was able to bypass the various cut-off features & run the injectors into 5 clear plastic bottles to check the spray pattern, then dry each injector, place brown paper underneath & check for leakage with the metering plate in the closed position. This showed that some of the injectors were leaking petrol & emptying the accumulator over a period of a few minutes.
The other failure were the 'O' rings that seal the injectors into the head. Cheap to replace, but a real swine to do.
In 250k miles I had to replace the injectors & seals twice.
Ian.

 

[grober]

Thanks Optimusprime. I have trouble starting the engine when hot and when cold. This happens only after I switch the engine off for at least 20 minutes. Otherwise it will start very quickly. I think I am loosing pressure in the fuel system but to prove this I need to attach a pressure tester to the fuel line.

So time to invest in a fuel pressure tester but which one should I choose.

SOUNDS LIKE THE DIAPHRAGM ON THE ACCUMULATOR [ PART OF THE FUEL PUMP ASSEMBLY AT THE REAR] HAS FAILED.

Bosch K-Jetronic – Part 2, Testing

In Part 1 we figured out the basics of what the components are and what they do. Now it’s time to test the system and see what we are starting with.

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