m119 misfire still there after the distributor changed

[gsxr]

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HOW-TO: Replacing Thermal Paste Behind EZL unit | "HOW-TO" Tutorial Articles

As many know, the EZL (ignition computer) is attached to the driver's side inner wheel well area in the engine compartment on the 500E/E500 (as well as the 400E/E420, 560SEL/SEC, and many other 1980s and 1990s MBs). There is a thin layer of white thermal paste that the factory used between the...

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[Oldcar]

Maybe check to see if vacum lines on ezl are properly conected in both

b4 you switch it?

 

[motor gear head]

Maybe check to see if vacum lines on ezl are properly conected in both

b4 you switch it?

i do have new makeshift one on

 

[Oldcar]

The plastic lines are brittle and prone to crack and break

 

[motor gear head]

The plastic lines are brittle and prone to crack and break

Where does pastic goes to and whats the specs of the plastic lines
Thank you

 

[Oldcar]

Previous posts cover location....it's not easy to get to...

 

[motor gear head]

Previous posts cover location....it's not easy to get to...

Good thing i have raccoon hands whats the specs or say part number for this plastic line
again Thank you

 

[gsxr]

Good thing i have raccoon hands whats the specs or say part number for this plastic line
again Thank you

m119 misfire still there after the distributor changed | M119 Engine

im linking a youtube video of whats going on. I need the legend gsxr to help my bad situation :):cel:

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[motor gear head]

m119 misfire still there after the distributor changed | M119 Engine

im linking a youtube video of whats going on. I need the legend gsxr to help my bad situation :):cel:

www.500eboard.co

i feel real dumb right now

 

[motor gear head]

could this work?

 

[gsxr]

OD is correct, but that is flexible tubing, not rigid. That stuff won't insert into rubber hoses.

The correct Tecalan tubing should be available locally at a reasonable price. This will not affect your misfire and will not cure the hard starting either.

 

[motor gear head]

OD is correct, but that is flexible tubing, not rigid. That stuff won't insert into rubber hoses.

The correct Tecalan tubing should be available locally at a reasonable price. This will not affect your misfire and will not cure the hard starting either.

ill have look at my local hardare store and after changing the coil pack and if there isnt any change ill buy this EZL
4.2L EZL

 

[Oldcar]

Did you find connection location

 

[motor gear head]

Did you find connection location

ill have to do that in few hours its 3 am at my place atm.

 

[Unavita]

Best bet is to change them and check also where can i find a 4.2L EZL.
Also note i live in middle east where sand can find its way in anything and anyone
One more thing what type of paste does the ezl use at the bottom?

I will try and remember to take a pic of it in the morning... unless someone has a better memory of the name.

 

[Unavita]

Ok- catching up here: are we talking about coil packs or the twin horizontal ignition coil that came factory to your model year?
If it is the latter:
The horizontal distributor is held in place by a dowl pin. It is a small pin like metal dowel. If it is not in place, if it is loose at all it will cause the symptoms you describe. Come to think of it I didn't check mine the last time I pulled my caps- better do that next as well. The part is very inexpensive but again- the time with pulling the ignition cap and rotor off.

I'll set myself a reminder about the paste picture for you. You will want to scrape the brownish paste remnant off the ezl before applying new.

BTW: I lived in Las Vegas (also a desert) and some of the desert in your car can very easily cause a short. I do not know the situation there for you but a dry ice pressure washer will get most of that off. Given that it is a desert you should prepare to check and replace most plastic and rubber fittings. Know that sand can short a cars electrical as well.

 

[motor gear head]

Ok- catching up here: are we talking about coil packs or the twin horizontal ignition coil that came factory to your model year?
If it is the latter:
The horizontal distributor is held in place by a dowl pin. It is a small pin like metal dowel. If it is not in place, if it is loose at all it will cause the symptoms you describe. Come to think of it I didn't check mine the last time I pulled my caps- better do that next as well. The part is very inexpensive but again- the time with pulling the ignition cap and rotor off.

I'll set myself a reminder about the paste picture for you. You will want to scrape the brownish paste remnant off the ezl before applying new.

BTW: I lived in Las Vegas (also a desert) and some of the desert in your car can very easily cause a short. I do not know the situation there for you but a dry ice pressure washer will get most of that off. Given that it is a desert you should prepare to check and replace most plastic and rubber fittings. Know that sand can short a cars electrical as well.

I already found them in my local bosch has them very surprised btw
here is the pdf of what i am getting for eletric things

Also can you provide a pic of what you just mentioned
"The horizontal distributor is held in place by a dowl pin. It is a small pin like metal dowel. If it is not in place, if it is loose at all it will cause the symptoms you describe."

Here also video of me finding where that EZL hose goes to as requested by @Oldcar.

 

[gsxr]

Also can you provide a pic of what you just mentioned
"The horizontal distributor is held in place by a dowl pin. It is a small pin like metal dowel. If it is not in place, if it is loose at all it will cause the symptoms you describe."

M119 ignition distributor dowel pin | M119 Engine

So... have you ever had that dowel that goes into the rotor break or somehow be broken? Where's the WIS for repairing that? If I'm reading all data correctly the dowel is a part of the ignition cam gear!?!

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[gsxr]

I already found them in my local bosch has them very surprised btw
here is the pdf of what i am getting for eletric things

Your PDF shows qty 2 of the same coil part number. This is incorrect... the 2 coils are not the same. See EPC screenshot below. If you are only replacing 1 (I'd replace both since you have them both out!), make sure you are getting the correct part number.

Here also video of me finding where that EZL hose goes to as requested by @Oldcar.

The tube to the EZL goes to the very back of the intake manifold, on the LOWER half. You can't see this without a mirror. The tube threads through the center of the intake manifold next to the MAF. You can't replace this tube without removing the MAF. If your MAF has an old, or original, rubber boot... that will need replacement too. Details and part numbers are here. You can check if the tube is good with the engine running, you can feel vacuum at the end of the rubber hose. Normally the engine RPM at idle will vary up/down when you disconnect / reconnect the hose at the EZL but since your engine isn't running on 8 cylinders, this test might not be valid.

The EZL is available new, $1570 USD list price in USA, about $1100 from discount dealers. No idea what pricing is in Bahrain. With no way to test your old one OR a used one off eBay, it's a bit tough to troubleshoot. The EZL's don't just fail on a hot day, but new thermal paste is generally a good idea whether you replace it or not. Install new coils AND double check both coil high-voltage wires (to each cap), before you buy an EZL.

Your MAF may not need replacement, as mentioned earlier in this thread... and they are NLA so you can only get used ones, and hope they are good. Most sellers don't test them because they don't have an SDS, and also don't know what normal values are when looking at live data. Your MAF does need a new screen though. Part number at the link above.

 

[gsxr]

EZL tube / hose connection at rear lower intake manifold:

 

[motor gear head]

Your PDF shows qty 2 of the same coil part number. This is incorrect... the 2 coils are not the same. See EPC screenshot below. If you are only replacing 1 (I'd replace both since you have them both out!), make sure you are getting the correct part number.

View attachment 211611

View attachment 211610




The tube to the EZL goes to the very back of the intake manifold, on the LOWER half. You can't see this without a mirror. The tube threads through the center of the intake manifold next to the MAF. You can't replace this tube without removing the MAF. If your MAF has an old, or original, rubber boot... that will need replacement too. Details and part numbers are here. You can check if the tube is good with the engine running, you can feel vacuum at the end of the rubber hose. Normally the engine RPM at idle will vary up/down when you disconnect / reconnect the hose at the EZL but since your engine isn't running on 8 cylinders, this test might not be valid.

The EZL is available new, $1570 USD list price in USA, about $1100 from discount dealers. No idea what pricing is in Bahrain. With no way to test your old one OR a used one off eBay, it's a bit tough to troubleshoot. The EZL's don't just fail on a hot day, but new thermal paste is generally a good idea whether you replace it or not. Install new coils AND double check both coil high-voltage wires (to each cap), before you buy an EZL.

Your MAF may not need replacement, as mentioned earlier in this thread... and they are NLA so you can only get used ones, and hope they are good. Most sellers don't test them because they don't have an SDS, and also don't know what normal values are when looking at live data. Your MAF does need a new screen though. Part number at the link above.

that pretty expensive.Can you send me the right part numbers for the coil packs i cant find them on mine and ill check the ezl hose out
ill update you in few hours.

 

[gsxr]

Coil part numbers are in the screenshot in post #69 above.

 

[Oldcar]

Check your plug wire firing order one more time b4 switching out coils which need high miles before they get weak ?

 

[Oldcar]

There are four wires (one for each cylinder) that go from each distributor cap to the spark plugs on that cylinder bank. And then, there is a single wire in the center of each cap, that goes to one of the coils, which are located behind the driver's side headlight, under the tandem

 

[Oldcar]

only that cylinder bank????.....

 

[motor gear head]

would this make a problem for the ezl to read causing it to act up
and oldcar i already checked 4times

 

[gsxr]

would this make a problem for the ezl to read causing it to act up

as mentioned previously, no, it will not.

 

[motor gear head]

as mentioned previously, no, it will not.

Ok i am atm looking at the local market for some parts ill update you all for any changes
again thank you.

 

[Oldcar]

Ok i am atm looking at the local market for some parts ill update you all for any changes
again thank you.

While you are there check vacum line LH module uses if it is cracked ......you won't be able to tune engine

 

[Unavita]

Damn you GSXR! Reading the pdf I now (because it's been a minute since i changed them) can't remember if the part numbers were different on the ignition coil! Bawahaha But thank you! Thanks for the WIS!

Post script:

Come to think of it I have never changed my coils but now I will be checking the part number because who knows what POs do?! Even the parts stores ask "left or right?"!

 

[motor gear head]

While you are there check vacum line LH module uses if it is cracked ......you won't be able to tune engine

there is line of the LH module can u share some pictures of this.
Thank you

 

[gsxr]

There's no vacuum line related to the LH module (fuel computer).

 

[Unavita]

There's no vacuum line related to the LH module (fuel computer).

Think he means in the EZL?

 

[gsxr]

Think he means in the EZL?

Yeah, I'm not sure what he meant. And, a vacuum line broken or disconnected will not cause the engine to run on 4 cylinders, and won't prevent the engine from starting. Definitely should check all vac lines and replace them on principle, but it's a red herring with the current problems.

 

[Unavita]

I don't remember exactly why I bought this brand. I am sure it was recommended. Really any thermal paste should work I would imagine. Thoughts?

 

[gsxr]

100g! That's enough for a dozen EZL's.

 

[motor gear head]

I don't remember exactly why I bought this brand. I am sure it was recommended. Really any thermal paste should work I would imagine. Thoughts?View attachment 211688View attachment 211689

sharing is caring u got enough for me

 

[Oldcar]

EZL tube / hose connection at rear lower intake manifold:

View attachment 211613

Great pic gsxr...

 

[Oldcar]

100g! That's enough for a dozen EZL's.

After your done pasting each other can you tell me why he is down 4 cylinders after a dist cap change.....?

 

[Unavita]

100g! That's enough for a dozen EZL's.

Yeah- it was what I found quickly though and I have 1 djet out of 10 cars- so 9 EZL's. My wife found the name of the grease interesting when she opened the mail.

 

[Oldcar]

Best bet is to change them and check also where can i find a 4.2L EZL.
Also note i live in middle east where sand can find its way in anything and anyone
One more thing what type of paste does the ezl use at the bottom?

Motorhead,
With more than 200k
Miles on M119 I replaced coils and noticed a significant improvement in
Power ...I figured if one was bad why not replace both. If your wires are right you may be there with the coils...did you change them and run it yet?

 

[motor gear head]

Motorhead,
With more than 200k
Miles on M119 I replaced coils and noticed a significant improvement in
Power ...I figured if one was bad why not replace both. If your wires are right you may be there with the coils...did you change them and run it yet?

Nah not yet and my m119 only has 69k miles its thee middle east that caused this much issues. I am going to change both and try to get new coil wires any new spark plug wire any suggestions?

 

[motor gear head]

After your done pasting each other can you tell me why he is down 4 cylinders after a dist cap change.....?

This problem was there before . At first i thought it was the caps but i was wrong so it has to be the coil pack or ezl .

 

[nocfn]

Have a helper with you and remove both coil wires from the caps. hang them in an area that they will be free of metal but visible to you as you stand in front of the car. Turn off the shop lights, have the helper start the engine. If they both light up - your coils work. If one doesn't light up, swap the wires over to the opposite coil and repeat the test. If the same coil fails to spark the light in the dark, you now for certain the coil is bad.

 

[motor gear head]

Have a helper with you and remove both coil wires from the caps. hang them in an area that they will be free of metal but visible to you as you stand in front of the car. Turn off the shop lights, have the helper start the engine. If they both light up - your coils work. If one doesn't light up, swap the wires over to the opposite coil and repeat the test. If the same coil fails to spark the light in the dark, you now for certain the coil is bad.

done that ik which one isnt working

 

[nocfn]

"done that ik which one isnt working"

accidental typos but I think you did this to determine the coil failure....

 

[lowman]

I have this EZL laying around
This is from an 400e or an e420 if i rememer correctly

 

[motor gear head]

I have this EZL laying around
This is from an 400e or an e420 if i rememer correctly
View attachment 211798

ohhh my god
how much do u want for it ?

 

[motor gear head]

im still waiting @lowman

 

[Oldcar]

This problem was there before . At first i thought it was the caps but i was wrong so it has to be the coil pack or ezl .

Nah not yet and my m119 only has 69k miles its thee middle east that caused this much issues. I am going to change both and try to get new coil wires any new spark plug wire any suggestions?

Look at top of cap it has plug wire numbered sequence for both distributors.Land R
Each cap has wires that go to Both sides of the v 8 engine....