Messages

1

Engine + Driveline / Re: Exhaust question

« on: August 16, 2016, 09:54:33 AM »

I would cut open again that cat and see if there are any loose metals flapping about when you rev it, could cause that sound. Again i dont know where you are lokated but ill happyly take any spare exhaust parts you might want to get ride of. Im currently cutting and welding a 318ti e36 exhaust and its a pita!

I'm living in Belgium. I can cut open the cat again but i'm not a good welder  The pipe on the ebay-advert also isn't plug and play 
Any other suggestions? 

2

Engine + Driveline / Re: Exhaust question

« on: August 16, 2016, 12:49:31 AM »

What brand is the new exhaust system from the last pictures?

i don't know, its a picture from google images.
It came from here http://www.bimmerforums.com/forum/showthread.php?1056710-header-wrapping

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Engine + Driveline / Re: Exhaust question

« on: August 12, 2016, 02:10:22 AM »

The third part of the exhaust is still ok. It has the resonance muffler and end muffler which is stock like in the second picture.
But it's the pipe between the header and resonance muffler which is not ok 
The cat converter has been cut open and welded again. So i think the ceramic meterial has been removed
to create better flow...But it makes such a terrible clattering, resonating sound when i rev.

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Engine + Driveline / Re: Exhaust question

« on: August 11, 2016, 03:15:07 PM »

I'm gonna ask my question here because it is more or less about the same.
Is the part after the header available without catalytic converter?
Just the piping with the flanges and thread for the oČ sensor.
There aren't emission regulations over here and my catalytic converter was hollowed
out by the previous owner which makes a terrible noise now. Or
are there other options to smoothen the noise?

5

Engine + Driveline / Re: Euro E30 M42

« on: March 28, 2016, 04:12:05 AM »

Damned fuel pumps!

What brand did you use?

I did a search on the bosch autoparts website and this was the recommended replacement --> bosch 0580314070
It contains the pump, filter, electrical connection, and a little tube for the connection to the fuelline bracket.

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Engine + Driveline / Re: Euro E30 M42

« on: March 24, 2016, 01:30:01 PM »

Problem solved! Turned out the fuelpump was dying a bit  . Fuel flow was too low, it should be 0,875 liters/30sec @ 12V + the internal check valve was jammed in open position. Fuel pressure should be 3,0 bar but i'm pretty sure it wasn't getting that either. I've done today 50 miles with the new pump and didn't had any problems  . It took me quite a while to find the issue but i finally did. I probably wouldn't have found the problem without the massive amount of information that's available on this forum and without all the help i've got here! 

7

Engine + Driveline / Re: Euro E30 M42

« on: March 08, 2016, 03:37:00 PM »

Bleeding went good today! Had no more airbubbles after 15 minutes of bleeding  . Jacking up the front of the car a little bit and squeezing the tubes helped a lot. But guess what: i still got the same problem  . So it's time for a recap. In my first post i wrote that the car would stall after two minutes which isn't right. After some more testdrives i discovered that the car rev's up good as long as i keep it under 3000-3500 rpm. When i go over it the engine starts to stutter. Max. throttle would lead to stalling or sometimes it would go up to the redline but eventually the revs would fall down again. Things i checked so far: airflow meter ok, throttle position sensor ok, water temp sensor ok, cam sensor ok and crank sensor ok. Injectors are refurbished and tested. I cleared up the mess under the intake and throttle body heating is gone. So i've got new vac hoses and gaskets. Also my intake boot is in good shape. So it is definitely not air leaks. But today i noticed when the lower flap from the throttle body is actuated by the upper flap, the engine is at it's critical point to stutter. Maybe this means something?

8

Engine + Driveline / Re: Euro E30 M42

« on: March 05, 2016, 03:24:52 PM »

I've had that stuff in several engines I've taken apart.  I think it's just a type of carbonization.

Does the metal of the injector body extend all the way to the top?  I did see an M20 injector that leaked fuel, but it was at the parting line between the lower metal and the upper stem of the injector.  Most likely you'll be ok, but monitor it for a few days.  You might even want to reinstall it in a position on the fuel rail where it it most easily observed.

I had them cleaned at a bosch dealer and the crack is no problem 

9

Engine + Driveline / Re: Euro E30 M42

« on: March 05, 2016, 03:23:27 PM »

Finally had some time on my hands to redo the vac hoses. I've also removed the TB heaterplate. But now i'm really struggling to bleed the cooling system  . Steam would come up on the bleedscew. How much coolant does the system contain? And do i have 2 bleedscrew? I've read it somewhere on the web. There should be another bleedscew somewhere around the connection flange where the 2 radiatortubes go to? And how long does the bleedingprocess take?

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Engine + Driveline / Re: Euro E30 M42

« on: February 18, 2016, 02:19:06 PM »

Hi

Sand like? Looks like oil deposits. Which leaves me to suspect valve stem seals. Did that come from the intake manifold? Also possible that the engine just has not been touched since it was made. Catch can time!

Where you blowing smoke on startup?

Cheers Rohan

It smells like oil but it has a granular structure and is kinda  sticky. It was mostly around the injectornozzles in the intake manifold (see pic). She already has 195k km (about 121k miles) on her dial so i guess it's normal about the deposits. She doesn't blow smoke when i start her. I removed my injectors with a lot of struggle out of the fuelrail and manifold. I noticed a small crack in one of them...Shouldn't be a problem i guess?

11

Engine + Driveline / Re: Euro E30 M42

« on: February 17, 2016, 01:50:07 PM »

Complete intake and heaterplate are removed. I've read most of 'the mess under the intake' and started with it anyway  . I'm gonna start rebuilding it when i get my gaskets... I'm going to get the injectors cleaned professionaly but i can't pull them out of the intakemanifold and i can't pull of the fuelrail (see 2nd pic). Doing something wrong here? I also did find a kind of sandlike deposists on the inside of the intakemanifold(see 3rd pic)?

12

Engine + Driveline / Re: Euro E30 M42

« on: February 13, 2016, 11:11:24 AM »

Definitely plug all the vac leaks before going any further. I'm not sure what that silver thing is mounted to the fender, but it looks like an aftermarket device. I'd be tempted to disconnect it and see if things improve. I've also seen some old BMWs with coolant temp vacuum switches that look like those paired vac tubes, but I have no idea why that'd be there like that. I'd be very strongly tempted to delete the throttle body heater and related vac tubing under the intake manifold. You'll need a new intake gasket but it's otherwise a pretty simple job.

I'd also test fuel flow & pressure. If your fuel filter is clogged (or fuel pump is on the way out) it'll starve the motor at high RPMs. The mystery plug on the firewall should be connected to enable the CO potentiometer in the AFM. I'm not sure your AFM even has a CO pot installed; our units over here did not. I'd leave it disconnected.

I'd also pull the cyl head cover to see if the cam gears look OK. You can easily check if the timing chain is loose and the cams are timed correctly. While you're in there, maybe pull the spark plugs and see if they look OK. Some light brown deposits are OK, sooty black deposits indicate too much fuel. Heavy black oily deposits could be bad news with valve or piston sealing. One or two washed plugs could indicate a blown head gasket.

Have you run any tests to see what the motor compression looks like? A leak-down test from a pro is usually pretty cheap and will give you a great baseline on motor health. If the motor has low compression, it will burn a lot of oil & plug up the catalyst. Used oil analysis is a useful tool too, if you have a sample of the motor oil with some mileage on it.

Thanks for the advice! I think i'm going to start with the throttle body heaterplate removal and refurbish the vac hoses. This is probably the easiest way for me (because like i already said: i'm a noob when it comes to engines  ) to find a solution on my engine problems. Search give me this http://www.m42club.com/forum/index.php?topic=3621.0 and this http://www.m42club.com/forum/index.php?topic=2742.0.
1 is a diy to get rid of the heaterplate and 2 is a diy to clean up the vac hoses and also to get rid of the heaterplate. Not all of the pictures are visible on the second diy  . Does anyone know where i can find a full version or some additional info on these how to's? This is gonna be huge for me so i want to inform myself as much as possible before i tackle this   

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Engine + Driveline / Re: Euro E30 M42

« on: February 13, 2016, 10:25:42 AM »

That think is an aftermarket emission device. You can remove it but you might get trouble on technical inspection (check the regulations from your country).

No emission regulations here 

14

Engine + Driveline / Re: Euro E30 M42

« on: February 11, 2016, 12:24:38 PM »

So i've removed my clogged up catalytic converter. Should i connect or disconect the mysterious black/grey wire plug because it has something to do with the cat as far as i can recall? (See pictures, the one where's a sticky about the hot starting problem) I've now tested my airflowmeter which is ok, throttle position sensor ok, water temp sensor ok, cam sensor ok and crank sensor. The actual resistance of a crank sensor should be 500 Ohm plus-minus 50 but mine is 480 Ohm. It's the only sensor which is a little bit of the reference value but that shouldn't be a problem i guess??? Gonna do the spaytest with carbiestarter tomorow. Does anyone know what the thing is with the two rubber tubes?(blue circle) On one end they are fitted to some kind of sensor. And on the other end; one is not connected and the other goes to what seems some kind of breather valve? And from that 'breather valve' a thicker rubber tube goes to nowhere(green circle)...  Feel free to share thoughts!

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Engine + Driveline / Re: Euro E30 M42

« on: February 08, 2016, 10:36:42 AM »

Hi and welcome to the forum.

The first thing that came to my mind was the catalytic converter is plugging up. Your car may, or may not, have one.

I've removed the cat. It was plugging up. The car is now driveable but it's still not ok. It won't rev over 3500rpm. When i do, the engine start to sputter...