Ugh, 12 injectors bad at the same time?

[spyderg0d]

Hello gents!
New to e32 forum as I'm not actually an e32 owner,...yet. I have however come to find a 92 750il that I'm troubleahooting as a crank no start in hopes of swapping into an e36 manual. I found it fires with starter fluid briefly and led me to check injectors.
I found all 12 injectors unresponsive to 12v with no flow although they do check ok for resistance. The car seem to of sat for years with horrid fuel before finding me.
Many questions but first few are.
1. Are the m70 injectors swapable directly with regular green top m50 injectors as I seem to find them defined the same in some stores by part number?
2. Besides the engine and attachments, harness and ecu,s cluster and eml computer, gas peddle, what will I need? (Already found bellhousing and flywheel adapters online).
3. Is there tuneing options available, engine bolt ons for power available?
4. Security system of the car, ews, ewsl? What about door locks or lack of door locks on e36 possibly locking up the m70 ecus with anti theft immobalizing?
5. M70 has dual fuel pumps no? If swapped to single pump (e36) would it meet demand, and would the other ecu (not wired to a fuel pump) have a reaction to a missing fuel pump?
6. ... I think thats it.

[shogun]

we had a similar problem some years ago on a 750 which sat for some time, the fuel injectors were clogged by old, slimy, gum-like stuff from old fuel. I would send them to a shop for reman. p/n for the M70 injectors for the Lucas 13641731357, also Bosch, Hella and FD*852 were used , same injectors were used on M20, M40, M70, M73, M43, M10, Bosch # is 0 280 150 715,Static flow rate at 3 bar, medium N-Heptane [g/min.]116,5 , resistance 15,9, OEM 13641706162, 13641734776, HELLA 8UW 009 087-621
used in:
3er E30: 316i (1015/M10), 316i (1025/M10), 316i (AB11/M40), 316i (AB21/M40), 318i (1011/M10), 318i (1021/M10), 318i (1031/M10), 318i (1041/M10), 318i (1071/M10), 318i (1081/M10), 318i (AF51/M40), 318i (AF61/M40), 325i (1111/M20), 325i (1121/M20), 325i (1231/M20), 325i (1241/M20), 325ix (1201/M20), 325ix (1271/M20), 325ix (1281/M20), 325ix (1291/M20),316i (1315/M10), 316i (1325/M10), 316i (AC11/M40), 316i (AC21/M40), 318i (1331/M10), 318i (1341/M10), 318i (1371/M10), 318i (1381/M10), 318i (AJ51/M40), 318i (AJ61/M40), 325i (1411/M20), 325i (1421/M20), 325i (1531/M20), 325i (1541/M20), 325ix (1501/M20), 325ix (1571/M20), 325ix (1581/M20), 325ix (1591/M20),316i (AJ11/M40), 316i (AJ21/M40), 318i (AG71/M40), 318i (AG81/M40), 325i (AG51/M20), 325i (AG61/M20), 325ix (AG05/M20), 325ix (AG95/M20), 318i (BA51/M40), 318i (BA61/M40), 325i (BB11/M20), 325i (BB21/M20), 325i (BB31/M20), 325i (BB41/M20)
3er E36 :316i (BE11/M43), 316i (BE21/M43),316i (CA11/M40), 316i (CA21/M40), 316i (CA71/M43), 316i (CA81/M43), 316i (CP21/M43), 318i (CA31/M40), 318i (CA41/M40), 318i (CA01/M43), 318i (CA91/M43), 318i (CP31/M43)
3er E36 Compact: 316i 1.6 (CG11/M43), 316i 1.6 (CG21/M43)
3er E36 Cabrio: 318i (BH31/M43), 318i (BH41/M43)
3er E36 Touring:318i (CE31/M43), 318i (CE41/M43)
5er E34 Limousine:518i (HA11/M40), 518i (HA21/M40), 518i (HA31/M43), 518i (HA41/M43), 525i (3-Türer11/M20), 525i (3-Türer21/M20)
5er E34 Touring:518i (HG31/M40), 518i (HG11/M43)
7er E32 Limousine:750i (GB81/M70), 750iL (Gran Coupé81/M70), 750iLS
7er E38 Limousine: 750i (GG21/M73), 750iL (GK21/M73), 750iLS (GK41/M73), L7 (GK61/M73)
8er E31 Coupé: 850CSi (EG91/S70), 850Ci (EG11/M70), 850Ci (EG21/M70), 850Ci (EG41/M73), Z1 Roadster Z1 (BA91/M20)

are the 2 crankshaft sensors working and the 2 donuts ? Maybe that causes no injection? If the donuts do not work, no injection, especially on newer M70 DME: Catalytic converter protection function https://www.bimmerforums.com/forum/s...&highlight=cat

Are the m70 injectors swapable directly with regular green top m50 injectors as I seem to find them defined the same in some stores by part number? >>>>see above
Besides the engine and attachments, harness and ecu,s cluster and eml computer, gas peddle, what will I need? (Already found bellhousing and flywheel adapters online). >>>driveshaft for example
Is there tuneing options available, engine bolt ons for power available? >>>some use turbo engines
Security system of the car, ews, ewsl? What about door locks or lack of door locks on e36 possibly locking up the m70 ecus with anti theft immobalizing? >>>depends on the built year, my 11/88 only has a drive away system, set with the code by the OBC
M70 has dual fuel pumps no? If swapped to single pump (e36) would it meet demand, and would the other ecu (not wired to a fuel pump) have a reaction to a missing fuel pump? >>>>yes, but one pumps might be enough for normal driving. The M70 has 2 pumps, so 1 for 6 cylinders, each: Bosch part number is 0580112507 (according to an old repair book), operating pressure is 3 bar, conveying capacity at 12 V 1.7 liter/minute = less than the M30 pump, capacity against counterpressure 875 cc/30 seconds, power consumption 5.5A. DME will not notice a missing pump, just make on the tank inside the trunk a Y-connection from 1 pump to the 2 fuel supply lines with 2 filters. The M73 for example in the E38 has only 1 pump. That was in the old days the safety thinking, each bank should be operatable on it's own = all double.

EWS system explained https://www.europeantransmissions.co...0EWS%20BMW.pdf

[spyderg0d]

I removed the injectors from the intake and had no flow while cranking. Then bench tested and found no responce, while other Bosch bmw injectors did as a comparison. I have not checked donuts of any kind besides an apple fritter this morning.
I will be useing the e36 driveshaft on the zf trans with stock e36 rear. So I won't need any driveshaft.
I am familiar with e34 e36 and e46 ews systems, I didn't know how they would of applied it in the e32.
Thanks for the answer on fuel pumps, I might do a dual fuel pump mod linked together just to simplify the whole system as well.

[spyderg0d]

I did have fuel pump prime and run though. It did not have eml light on until I cranked with throttles unplugged to check injector fire.

[spyderg0d]

Ive soaked the injectors for days now in both penetrating fluid and brake cleaner and they are still unresponsive to 12v. I dont get it. They must of ran some sort of glue in it or something. They all still have a resistance of 15.4. Anyone know of any really good cleaner to try? It would save me $200 on injectors or $140 in refurbishment on an engine I havent boaght or even made idle yet

[shogun]

try this https://www.youtube.com/watch?v=rUUgR94drxg

[spyderg0d]

I already did that. I used a piece of fuel line clampd on the end. Wired the connector straight to a battery. I even pressurised the end with 90lbs of air while the hose was filled with cleaner and penetrating oil. Overnight too.. These injectors have to be froze or carroded shut.

[shogun]

When we did that cleaning, we used 2 wires from a battery and gave directly power on the fuel injector in short intervals, some we could get working again, the other we had to scrap.

[spyderg0d]

Yupe.
So I escelated the process a bit. I used maybe .5gallons of gas in 1 bottle of injector cleaner. Soaking all of them for roughly 2 days now. Most of them now click very minimally when power is applied to the injector. The 2 that I had previously soaked in brake cleaner and penetrating oil click much better and drip fluid out when power is applied. So, I'm convinced within a few more days they should be up to snuff. I'm sure whatever gunked up the injectors, was pretty intensely gummed.
But I finally got a price back from the boss on what he is going to charge me for the whole engine and setup. $180.. Looks like I should have about $1000 tied up to get this m70 into my 318is.

[spyderg0d]

I got them all to make very minor clicks and move very small amounts of fuel, but in the end all 12 are junk. There goes that project.