m43 lifters

[ver328i]

a year ago my dads m43 developed a heavy lifter noise and after lots of struggling we somehow manged to get it quiet then...The noise is back now and is not going away!!!

so far:
At first we noticed lots of sludge and decided to run some flush and fresh oil. So far its been through 2 oil changes.

We bought a new set of 8 lifters twice, replacement camshaft, replacement cam followers but the problem persists.

Seems the first lifter (exhaust side) and first lifter (intake side) keeps on collapsing. At this point i'm sure all the lifters i put in these two holes cant be faulty and that it must be oil delivery related.

Can anyone shed some light on this matter?

 

[Nikhil]

I think it’s an oil pressure issue, remove oil pump and sump clean them up nicely, new oil and fresh filter. Also what oil are you using?

 

[andrewbuch]

My M43 has 180K kms. It started a tappet / lifter noise when I started it. But it disapeared when I did a service for a few months. So when it came back again, I ran a mix of ATF & Oil for 2000KMs driving the car easy in that time. When I drained the oil for its service, the old oil was sooooo dirty. ATF has very good cleaning properties. So far the noise has not returned have done about 2000Kms since the service though.

 

[ver328i]

I think it’s an oil pressure issue, remove oil pump and sump clean them up nicely, new oil and fresh filter. Also what oil are you using?

we did that yesterday...cleaned everywhere we could.

As for oil, He always ran the car Castrol 10w40 then switched to shell 15w40 - So frustrated and willing to try anything that we put in some delo 15w40 yesterday (diesel oil with detergents) to try and remedy. Car ran well quiet last night and this morning but he just called me to say that the first intake lifter collapsed again and its noisy again

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My M43 has 180K kms. It started a tappet / lifter noise when I started it. But it disapeared when I did a service for a few months. So when it came back again, I ran a mix of ATF & Oil for 2000KMs driving the car easy in that time. When I drained the oil for its service, the old oil was sooooo dirty. ATF has very good cleaning properties. So far the noise has not returned have done about 2000Kms since the service though.

we put some diesel oil in last night in hopes of cleaning up a bit but same problem persists.

How can one diagnose the oil pump? to me it works fine as all the other lifters stay hard but the first two always collapse. The oil sprayer bar is clean and oil flows out of all the holes at almost the same rate.

I hate this motor - reminds me of the old m40's :argh:

 

[LevanM]

Oil guide on the head\block could be blocked or blocking flow?

 

[andrewbuch]

Should be using 5w40

Sent from my GT-P5100 using Tapatalk 4

 

[andrewbuch]

Oil guide on the head\block could be blocked or blocking flow?

+1

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[ver328i]

Fixed :thumbs:

Went old school and the car's been perfect for the past two weeks(touch wood)

NOTE: this is not recommended. We did this as a last measure. Felt like we tried everything and had nothing to loose...we were prepared to buy a recon'd motor if anything went wrong.

Right now to what we did...:fencelook:

- drained the oil
- poured 5lt Diesel into the motor
- started up and idled for 1 minute
- drained the diesel (amazing amount of filth came out along with the diesel)
- poured in another 5lt clean diesel
- drained the diesel (came out almost clean this time)
- poured some el cheapo oil in and cheap filter and started up.

Car sounded noisy for one minute and then we couldnt even hear it idle.
- drained the cheap oil after 2 days of driving
- replaced with fresh good oil and filter

:thumbs:

 

[yunuso]

:bravo:

glad it worked out for you, i had similar noisy lifters which i almost replaced, but it turned out to be a leaky oil cap seal disturbing the oil pressure .