D-Jetronic tester

[carl888]

I managed to buy a D-Jetronic tester, a Kent-Moore 112D.  I was looking for a Bosch EFAW 228 but have been blown out of the water in bidding via eBay, the last few in Europe have gone for 500 Euro and more.  Anyway, after a little research I think this unit might be a bit of a peach, unlike the Bosch unit that piggy backs the ECU, this American made model emulates the ECU meaning you can see first up if your ECU is faulty.  Additionally, you can change mixtures on the fly.  The other functions should be self explanatory.  haven't tested it as yet, but look forward to giving it a go.  Anyone else into these things?

[brettj]

I've been trying to buy a Bosch unit for a long time as well.  Curious to see if your Kent Moore really helps you to diagnose problems with your car.

[carl888]

OK, update, it's a good unit, but it doesn't tell you anything that you can't work out with a multimeter.  It does however perform the tests in 1/10 time!  Had a good play with it.  You can run the fuel pump independently of the engine running or not which makes pressure tests easy.  Testing the trigger points, injectors, temperature sensor 1 + 2 all easy.  You can run through the entire D-Jetronic system in about 10 minutes.

Conclusion, my car still runs like shit.  Presently I hate my W116 and hope it burns unceremoniously to the ground.

[witty]

Carl888

Im with you mate, mine has been one disaster after another, have spent countless hours trying to keep this thing running,
but I think I have a lemon.

It wont start and run since a timing light check, dumped a load of oil underneath, never idled properly since I got it.

Any suggestions apart from the cremation you mentioned?

Cheers
Allen

[giles]

Carl, that's a great pice of kit. What would one expect to pay for a Kent-Moore?

I really like the challenge of D-jets, some throw in the towel but with persistence I managed to get a few going quite well.

Giles

[carl888]

Carl888

Im with you mate, mine has been one disaster after another, have spent countless hours trying to keep this thing running,
but I think I have a lemon.

It wont start and run since a timing light check, dumped a load of oil underneath, never idled properly since I got it.

Any suggestions apart from the cremation you mentioned?

Cheers
Allen

Probably beyond the scope of this thread, but if it has compression, fuel, ignition and air, it WILL run!

I always start with the basics, fuel and ignition and go from there.

My car always runs, but it is very hard to start when cold.

[carl888]

Carl, that's a great pice of kit. What would one expect to pay for a Kent-Moore?

I really like the challenge of D-jets, some throw in the towel but with persistence I managed to get a few going quite well.

Giles

The Kent Moore unit is worth nothing.  I was the winning bidder on this:

http://www.ebay.com.au/itm/Kent-Moore-Instrument-Company-Model-112D-EFI-Analyzer-Fuel-Injection-Tester-/181488202238?ssPageName=STRK%3AMEWNX%3AIT&_trksid=p2047675.l2557&nma=true&si=KdkDwPBVsrPihyyZVgEmghn7UPE%253D&orig_cvip=true&rt=nc

I love D-jet too, my next test is to replace the ECU.  If that doesn't work, I'll have to re-do things I've already done, check valve clearances etc.

[oversize]

You blokes need to harden up!  Diagnosis is a case of checking items in a logical sequence to find the fault, and you will find it if you're determined enough.  The worst thing you can do is jump all over the place replacing bits here and there, since it'll cost lots and there's no guarantee you'll get it right

[oversize]

Oh BTW nice machine!  There's some here that will be fascinated since they're right into electronics and ECUs....

[carl888]

You blokes need to harden up!  Diagnosis is a case of checking items in a logical sequence to find the fault, and you will find it if you're determined enough.  The worst thing you can do is jump all over the place replacing bits here and there, since it'll cost lots and there's no guarantee you'll get it right

Absolutely true!

But there becomes a stage where you have to replace components to eliminate them.  This is the curse of the intermittent problem.  It's where I am, and it's not a good place to be.  I write a job card for everything I do on my car.  I am up to 44 hours so far, trying to get it running right. $4,840 at my workshop rate!  I'm also very fussy, which doesn't help.

I'll give you a good example of how issues can come out of no where, see if anyone can guess the problem here:

I had a very nice Ferrari 308 GTB in the shop, the problem was it had a slight missfire at idle but only in the first 3 minutes of operation.  Even with a flat plane crank in these lovely little 3.0L V8s you can get them to idle nicely.

What was the problem?

[carl888]

Oh BTW nice machine!  There's some here that will be fascinated since they're right into electronics and ECUs....

It works well, I would still like to try the Bosch one at some stage.

[gf]

could the ferrari issue be a faulty cold start injector?

[giles]

Carl, if you want to try another ECU, I have a few if you want to try one to see it that's the issue.


Giles

[carl888]

Thanks for the offer Giles, RobertD and his collection of, ahem, stuff, to the rescue however next weekend by the looks of things, report to follow.

[carl888]

could the ferrari issue be a faulty cold start injector?

Could be, but it's carburettored, it's actually a really interesting story, I'll start a separate thread about it in "Auto Torque" and see if anyone can guess.