Hey everyone. Does this look like a usable test gauge setup for the KE Jetronic on my 86TR? http://www.sjdiscounttools.com/ta33865.html It seems to be very reasonable at the $85 price. I've never tested the CIS with a gauge, so I was looking for input from you guys who have done it before. Incidentally, I am trying to get it running correctly again after a long sleep. I've located a few problems and resolved them, namely a sticking sensor plate in the left bank air sensor unit, but it will not idle properly at all, with poor throttle response when at idle, and runs poorly and erratically. The mixture is very rich. you can smell it from 10 feet away, at least until the cats warm up. The injectors and distributors are flowing okay. The injectors are the newer brass type. The pressure actuators test out at 20 ohms, and I know of nothing else to test them with. New throttle microswitch installed Since both banks are firing and there is spark at all cylinders, I'm going to test out the fuel system, once I give Larry Fletcher a call. The rpm sensor tests good at 2.5 VAC. The tach is not working correctly at all. Thanks for any input. Image Unavailable, Please Login
If you have the correct adapter to tie in it might work okay. Have you tested/cleaned the injectors and observed spray patterns? If you are having excess fuel problems you may have nozzles that "squirt" instead of "spray". The pressure gauge sets are for sale everywhere but the tester/cleaners are pretty rare. It's basically a small hand pump with a pressure gauge attached that you connect an injector to and pump solvent through. You observe the opening pressure and the pattern as the solvent escapes.
Yes that is the test tools you need. When you call me I can tell you how to hook them up and what to look for. Larry
I purchased this tool set, and it didn't fit the CIS system on my 328. The set does not have the correct fitting/adapter to properly connect to the bosch CIS system. It took over 3 months to have the money refunded by SJ Tools. I do not recommend any transation with this company.
Well, that is not good. The description states that it only works with the Bosch CIS K & and the CIS-E, which I believe is the generic term for the KE Jetronic system with metric threads, so if it doesn't, it would be useless to us. Thanks!
I purchased this tool set, and it didn't fit the CIS system on my 328. The set does not have the correct fitting/adapter to properly connect to the bosch CIS system. It took over 3 months to have the money refunded by SJ Tools. I do not recommend any transation with this company. Do you refer to the top of the fuel distributor port? If so you must have the long fitting turned down to fit between the banjos and shortened to keep from hitting the rear firewall. I don't know of a test kit with all the right fittings for all applications. It looks to be the same basic kit as NAPA has but 35 to 40 dollars less, but again you may have to modify some fittings. Where did you find a set that did not need any mod's? Larry
I purchased a similar "cheapy" Bosch CIS pressure Tester, and it included two short M8 x 1.0P adapters (like the two short ones shown on the left in that kit?) But on a TR, the Supply Pressure Test Port on the 7-12 bank is obstructed by the intake plenum so I use the port where the cold start injector line attaches to measure the supply pressure: Image Unavailable, Please Login
Ah. So my intial conclusion that you can have cold start flow without injector flow was correct. Foturnately, that was cleared up.
How long? the brass nozzles were an innovation courtesy of ****/GMBH.... before getting too wrapped atound the test ports-which are difficult to acccess, and will not allow the insights to control pressure manipulation that a control pressure regulator allows for("warm up regulator" in 911 parlance)...let engine warm up such that BOTH of your oxy sensors are fluctatinng-how much, and how frequently is NOT important here... now check you co sample ports--BEFORE the oxidation pre-catalysts. Now....disconnect the sensors...appx 1.2% co is a gooood setting for this rig.... if upon reconnecting the your oxygern sensors, you co sample RISES-especially if so significantly and quickly-wire trace your injection harness to the ground....frequently a stud/nut somewhere on the intake manifold to head area. there will be a crusty white residue. Clean all this, add an electric anti crud compond-Wurth cu202?)and retest-likely, happy days.... Dormant CISe cars have a rather consitent set of failure patterns...next will be the center control plunger seals in the main mixture control unit, but first, you will need to see if the neoprene/nitrile/silicone o-rings which seal the vane vale(the "electronic" warm up regulator) on said main mixture fuel head are not leaking...ARCO fuel has had a statistically interesting corrllation in this regard, NOTHING firm here...opinion ONLY, based on many examples. TR CISe is essentially, 2 1986 MB 300e M103 engines...essentially, this is a mechanical fuel injection, masquerading from its reality of essentially, being a fancy carb! Grounding problems are a huge problem in this family of fuel management systems and can in worst cases lead to UCUs stuck in a looping fault condition. Rare, but not that rare... let me know how it test out, fuel pressure-short of insufficient, is not really ever a problem with CISe systems, a huge sensitivity issue with LH, HFM, Ljet and that whole family of "efi" systems...
That would be nice if the engine would actually idle without input. - but it does not. I'm assuming that these testers tell you a bit more than supply pressure.
This tester will tell you about upper chamber pressure, lower chamber pressure, rest pressure, and if your EHA is regulating your lower chamber pressure. The difference in upper and lower chamber pressure determines the pressure drop at the metering slits by opening or closing the differencial pressure valves, it is this that determines if it is rich or lean. I am too slow at typing to get much deeper than this so order your tester and call me. Larry
