E36 TDS won't start!! - Bimmerfest - BMW Forums



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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 02-25-2016, 02:14 PM
geckomandoza geckomandoza is offline
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E36 TDS won't start!!

Hi

I hope you can help!

I am trying to help my friend get his 318 TDS compact back on the road but it wont start. It was running fine until a month ago.

I replaced the fuel pump for him today as it was not working. It is getting fuel post filter in the clear pipe but there are air bubbles. I wouldn't have thought this would cause it to not start though as I have worked on many vehicles where plenty of air can be seen and they still run.

There is fuel to the injection pump but no fuel at the injectors at all.

Could there be an air lock? Is there an air bleed screw on the injector pump?

Is this a possible electrical issue that would stop the injection pump working? Crankshaft sensor etc?

There is 12v at the glow plugs and they have been replaced in the last few years.

The battery is fully charged.

The immobiliser has been disabled and the starter motor is turning fast enough.


I know a fair bit about cars but not diesel injection pumps and I am a bit stuck! I appreciate any help to try and get my friend back on the road!

Cheers,
Simon.
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  #2  
Old 02-25-2016, 07:20 PM
Lil 325 Lil 325 is offline
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Check all relays fuel relay has similar symptoms
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  #3  
Old 02-25-2016, 07:27 PM
Lil 325 Lil 325 is offline
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Also crank sensor causes this or a fried ecm or bad ground to ecm or fuel pump think of what happened prior to car not running a car wash a huge puddle a long rain, a parking curb , just died while running or did it just not start ever again after a night of sitting ?
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  #4  
Old 02-26-2016, 07:04 AM
geckomandoza geckomandoza is offline
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Hi

Thanks for your help!

The fuel pump relay have been changed before. (they have been changed to 2 small grey ones) and it has worked for years like that.

The pump relay is only for the tank lift pump isn't it. That is working fine.

The other main relay I will have a look at.

My friend hasn't mentioned anything about when he last drove it so I will ask him if he can remember anything.

I am going to have a look at the crank sensor.

Do you think it could be an air lock in the injection pump? Fuel is not making it to the injectors. Or might it be the fuel cut off solenoid?

Thanks again for your help!
Simon
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  #5  
Old 02-26-2016, 12:26 PM
Lil 325 Lil 325 is offline
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Not usually no ..... u probably have a bad crank sensor or cam sensor this will shut off power to injectors as there will be no engine pulse for the firing order if either is bad aaaaand is the most common no start problem along side main fuel pump relay not the pickup pump but main pump .
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Old 02-26-2016, 12:34 PM
Lil 325 Lil 325 is offline
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There should be a multimeter test u can use to test these sensors ...the crank sensor will shut power off to injectors aaand throws the firing order off (which means there's still power to the plugs but not enough to get them to fire right or in gasoline engines the plugs will fire at random and not in sequence the firing order will be messed up because no pulse from either sensor these act as your distributor of sorts )
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Old 02-26-2016, 12:36 PM
Lil 325 Lil 325 is offline
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Orrrr he blew a head gasket at which case there wouldn't be much for compression ...these are all things to check since u weren't in the car when it died ..
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  #8  
Old 02-26-2016, 12:38 PM
Lil 325 Lil 325 is offline
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My money is on the crank sensor ! From what u describe for a no start condition
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  #9  
Old 02-26-2016, 10:33 PM
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Daggerty Daggerty is offline
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Since it's a diesel I would say air in the fuel system is why it won't start. With the given info.

A trick I use is spraying starting fluid in the intake while turning it over and with the accelerator all the way down.
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  #10  
Old 02-27-2016, 12:40 PM
geckomandoza geckomandoza is offline
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Thanks again for the help guys. I will have a go next week and let you know what happens!
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  #11  
Old 03-07-2016, 12:19 PM
geckomandoza geckomandoza is offline
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Hi

Still no joy! I cant get it started.

I checked all the relays and they are working fine.

The cut off solenoid on the injection pump appears to work as I can hear it clicking.

I bled the fuel system and there was a fair bit of air still in it but it is now all good.

I tried starting it with easystart spray and it was trying to start but still no fuel from injector pipes.

I could not find the crankshaft sensor. The engine is an M41 diesel angine. Does it have a crank sensor or just the speed/impulse sensor and would that cause it to not start?

Can anyone think of anything else?

Thanks again, Simon.
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  #12  
Old 03-07-2016, 06:45 PM
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drivinfaster drivinfaster is offline
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not being familiar with the e36 diesels (never got them stateside), i cannot say if these use a photo optic sensor in the fuel distributor or not.

if there is no crank position sensor located at either the front or rear of then engine, then it's probably in the injection pump, and probably called something else because it doesn't actually register the crank position directly. most likely one of the solenoids in the link below.

http://www.realoem.com/bmw/enUS/show...diagId=13_0396


looks to be an optic injection pump, by the illustration, but again, i am limited in general diesel stuff and not familiar with this particular engine.

i do hope this helps some.


pics of this diesel compact would be greatly appreciated, though.





df
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  #13  
Old 10-23-2019, 09:16 AM
Rorro Rorro is offline
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Hello everybody I found this thread because I have the exact same car with the exact same problem: I took the injector nozzles out and took them to the shop due to white smoke and loss of power, when I installed them i noticed that no fuel was coming out of the high pressure pipes.

I will, if you still want them, post some pictures of the M41 engine, cause I was thinking of removing the intake again to see if I missed or forgot to plug something.

Cheers!

ps: maybe its air in the pump? I really donīt know how much i should be cranking it in order get some fuel in and out of the pump after being stoped for a week.
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  #14  
Old 10-23-2019, 05:34 PM
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hornhospital hornhospital is offline
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Welcome to Bimmerfest!

I'd like to see the pictures. The M41 is an unknown commodity in the U.S.
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  #15  
Old 10-31-2019, 05:45 PM
Rorro Rorro is offline
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Hello, here are some pics of the engine, sorry about all thar dirt
Click image for larger version

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Exhaust side, air filter housing off
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First picture is missing this, also dirty, plastic intake
Click image for larger version

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Should this be all that oily and sooted?


Cheers!
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