....at least now I've got fuel pressure from the main pump.

I replaced it after measuring and finding the current draw to be around 2.2A when I would power up just the main pump.

I did get a chance to go out to a 240 of a co-workers and measure his main fuul pump current and his was 7.0 Amps. The Haynes manual schematic says it should be 6.5 Amp. My new pump measure 8 amps.

My new pump ($154..AutoZone) was identical to the one I replaced (PN: E8123)

Of course my hopes were up that the car would now start but, alas, it does not.

I haven't measured the pressure but I can tell from the spray that comes out of the filter inlet that there is significanlty more pressure than I had on the old one.

SO now my next question is what can be keeping the fuel from getting to the intake.

(Recall that the engine starts when starting fluid is squirted into the intake manifold and I'm pretty sure the injectors are firing. When cranking the car if will not even "hit" except on the starting fluid.)

My next question is: "Shouldn't there be some fuel flow back out of the "return" line on the firewall running parallel to the inlet side which contains the fuel filter?"

Perhaps that is not what that line is for but could someone tell me if that line should have at least some fuel flowing back to the tank or wherever it routes to?

When I open that line there is no fuel at all. Not even a drip.

I would greatly apprecaite any help with understanding the "fuel distribution system or module" or whatever the output from the fuel filter goes to.

I also have a high pressure at the cold start valve when compared to before I changed the fuel pump, and I am curious as to why the engine won't at least start if only for a few seconds, on the cold start fuel alone. However, I am not sure if the cold start valve ever worked since my girlfriend has owned to car, but I'm gonna check it tomorrow and see if it is squirting into the manifold but even if it isn't the car should still start, or at least hit, eventually while cranking continuously.

Any insight, comments and ideas would be greatly welcomed and greatly appreciated, especiial in regard to failure modes of the "fule distribution module" or whatever it is. Perhaps someone could email me or fax me a copy of the relevent pages of a Bentley manual.

I'll keep plugging along and keeping you guys informed of my trial and tribulations and when I final succeed, I'll share with the forum my final findings.

Thanks for your time and thanks to all who have responded to my previous posts.


Rick B.

rblack528@hotmail.com

Rick -

I just read over the following:

>>(Recall that the engine starts when starting fluid is squirted into the intake manifold and I'm pretty sure the injectors are firing. When cranking the car if will not even "hit" except on the starting fluid.)<<

The starting fluid gets to the cylinders through a passage normally used only by measured air. Starting on the fluid proves ignition, but not that the injectors are firing.

Bentley manual covers LH systems beginning in 1983.

Figure out a test to see that the injectors are firing. The system works, in a general way, by feeding fuel under pressure to the injectors all the time. They fire with a certain frequency, faster for more fuel. The ECU determines the frequency.

Do you have a Haynes
Manual? It will cover your model.

Your test of the cold start injector will help.

Good Luck,

Bob

:>)

...at least in a general way by connecting the wiring harness to the injector located in the front of the "bellow" below the distributor to a spare injector from my '85 528e and it clicked like mad whenever I cranked the engine.

I guess I could check as many of the injector harnesses as possible. The injector resistance for the BMW injector is around 10 ohms. Does anyone know what the resistance of the Volvo injectors for the '81 240DL are supposed to measure? I want to make sure that I don't blow out any injector drivers in the ECU while doing this test.

(While working on my 528 I have noticed a lot of similarity with the Volvo engine)

Assuming the injectors are firing can you tell me anything about the "fuel distribution module"?

And I am still curious about the "return" line running parallel with the line containing the fuel filter and if it should have any fuel in it when the main pump is pressurized.

Thanks for your help.

Rick

I thought the 81's had a K-jet fuel injection system, CIS. no wires connected to the injectors.

-Bruce

...I found an "injector like wiring harness" of some type in the front of the "air intake duct" behind the distributer. There is a device that sort-of looks like an injector and it has what appears to be a fuel line that seems to be coming from this "fuel distributer".

(I cannot locate a reference to it in my Haynes manual).

The wiring harness was identical to that required by my spare injector so I hooked it up and it clicks rather fast when the engine is cranked.

For all I know this thing could be metering air into the system and I have fooled myself into thinking that I have checked the injectors.

Where is the metering of the fuel that goes to the injectors acheived?

How would I go about checking the injectors electrical circuit?

Is it possible to pull the injectors and crank to see if any fuel is being made avaliable?

All information is greatly appreciated.

Thanks