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Pulling my hair out a bit over my cars lack of starting with the SDS. Yes, this is the same car I started working on years ago, but until this past week haven't had time to get back to it. Well, my time is now!

 

Using SDS EM-3E with an L28ET. Stock injectors (low impedance injectors and the resistor pack built into the SDS.), stock turbo, stock almost everything at this point on the engine. Spark is strong. Fuel isn't! I have pressure to the rail however, (verified by loosening the feed line)and if I compare the compressability of the rubber hoses before and after the FPR I am pretty sure its good to go. (ie: hose won't compress before FPR because of fuel pressure, will after the FPR) Stock FPR and rail for now too.

 

When I crank it over I get no hint of it starting... I've upped the knob to max rich, and now I've upped my fuel start values as well to ~120 in the 20C range. I've turned off all the fuel cuts (rpm, map, etc) just to eliminate that as a possibility.

 

Checks have revealed battary (12.6+) voltage at the injectors. As far as I have been able to find, my grounds are good, though I suspect I am having a grounding problem somewhere. Anyone have any other ideas?

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Guest Tht1KSguy

Have you had someone else crank the engine while you listen to see if the injectors are firing? Maybe it's possible that even though you have pressure and voltage to the injectors they're not cycling on/off. If the car was sitting for a long time w/ fuel in the rail maybe the injectors are varnished stuck?

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in order to see if the injectors are firing, do this:

 

go to the store and buy 6 of the cheapest baby food in glass jars.

 

feed the food to your girlfriend/mom/dog. one of them will like it.

 

leaving the injectors on the rail, take the entire assembly off the intake manifold. put each injector in its own jar, and crank the sucker over.

 

this will keep the fuel contained, and your will also get to see the spray pattern. once you see that all your injectors are fire properly (and i bet they are not) you can start trouble shooting from there.

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  • 2 weeks later...

Well I figured I'd post a conclusion to this thread.

 

Turns out all 6 injectors were varnished shut from sitting! (even without fuel in the system) I took off the rail, and using a nail with the system under pressure, pushed the pintle in enough to get fuel out. There was a definite "stick" on each pintle. Once it was reassembled it fired right up! I added some FI cleaner (ie: diesel) to the tank just to clean them out more.

 

The plan is to get some 350-450cc/min injectors fairly soon, so I'll put off cleaning these and put the money towards the new injectors.

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All ya need to do it is something to push the "pintle", and a can of carbeurator cleaner...

 

spray some carbuerator cleaner on the tip of the injector (needs to be upside down, and the push the "pintle" so the injector is open... Do this several times to each injector, and they will work like they are brand new...

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