m103

Hopefully this will be a brief one, recently removed this device from the engine of my W124, its a Kaltlaufregler ( which in English is a cold running regulator). As far as I understand it has a bimetallic strip inside which, when the engine is cold, it feeds extra air to the fuel injection...

Please help me work out whether i need a new timing chain tensioner or whether i am suffering from 'pinking'. My old 300E sounds ever so slightly like a diesel when it starts but then quietens - except when up a hill and then a faint rattling can be heard. Is this the chain or is it pinking...

Can anyone come up with the part number for the o ring that is fitted at the rear of engine lifting eye.The heater feed hose from rear of engine block fits on it.I have a water leak from this pipe It may be the same size as return to the pump heater pipe o ring . Car is w124 260e. Thank you .

Can someone please help .The best way to refill with coolant .I have replaced the pump.So realy would like some help please. After old pump removed ,i would think all the fluid was released. Would love to flush the heater core.But the drain on engine block is in such a place i am not able to...

Hi all. I've had an intermittent issue with the cooling on my G300 (M103) petrol for about 6months now. Every now and then I'd get drips of what looks like coolant (although could be oil/water) from the driver side front of the vehicle. I first replaced the coolant reservoir cap as it seemed...

hi the timing chain on my m103 engine occassionally rattles when engine is hot an i was wondering whether this was anything to do with the fact that i put in synthetic oil by mistake. If i went back to 20/50 mineral, would that quieten it a bit? thanks MJ in Beirut

In a fit of misplaced enthusiasm, I decided to start doing the above. Like the mechanical idiot I am, I pulled the old leads off assuming it would be clear which order they go back on the front of the engine. Errrm... :doh: Can any of you fine people please tell me/provide a photo/come...

Car starts up great. Drives normally until engine is hot. Then becomes hesitant on acceleration. The hesitation quickly worsens over about 5 to 10 minutes. The car will then stall when accelerating from idle. It can be restarted and will idle rough with the car shaking. At this time, if put into...

any advice appreciated on changing a cam lifter. Or is it really as simple as popping the old one out and pushing a new one in? I"m guessing there's more to it than that but I tried the Wyns-type treatment and it didn't work so i thought i might as well buy an aftermarket one for about 5 quid...

hi does the motley crew have any tips on how to quickly identify the cam lifters which are not working properly? If i took the rocker cover off and started the engine (warmed up) would it be evident from the noise? Or is there a clever shade-tree way of listening with a dutch cap and a...

i know. it's dumb, but i just wasn;'t paying attention and did the annual oil change and filter - only to find that i had chucked in almost 6 litres of fully synthetic 20/50. Is this automatically a bad thing and should i drain it right away? I mean, is there an danger of damage on an old (but...

....but runs very smoothly up to that point. I've just redone the valve seals and have noticed now that all the plugs are in great condition (no more oiling up). Just dont know where to start as it feels like it is being starved of fuel - but experience has taught me that usually when you...

I am ! Can anyone shed any light on this? I changed the valve seals and though that i had solved the problem of plugs oiling up - but in fact i have noticed when the engine is warmed up, there is a small trace of blue smoke, which was not there before....This happens when i rev up to about 3000...

any advice on this would be very much appreciated. Am doing the old indian rope trick and replacing the valve stem seals. And what a bugger it is. If you don't get the nylon rope in the pot exactly right, then the valve does not hold completely still and you can't get the collets to pop out...

Hi All, I bought a 1990 300SEL recently and I've just got round to checking the LPG mileage. It returned around 19 mpg on gas. It's the first 12v M103 I've had and I have to say it's a really obliging motor and the ride seems better balanced in the long version rather than the SE...

As above, for an 88 300CE. It's the valve that sits underneath the air filter housing, but I don't have a part no.

Hi All, Every morning as I turn the key, prior to turning the engine, there's a great big gurgling from what seems like under the dash, very loud it is, too. Despite having had many an old merc, I've never come across this before. Possibly related is a very high tick-over of 1900. Any...

hello need some help on starting a 1990 300sl m103. the car has been parked up for over a year and will now refuse to fire up. before it was taken of road it began to idle very badly and misfire. i have replaced the following parts this week. distributor cap. new ign leads. spark plugs...

Hi as per the title, I need a M103 fan bracket as per picture part no. A103 200 1728 many thanks mazza

Hi , .......I'm From Indonesia ..... I have W124 ,1991 300E sportline with M103 engine ...... I mess up final problem with Fuel Enrichment ....., still not solved until now ... I just replace Airflow Potenciometer with a new one ..... FPR, EHA , Jetronic seem ok ..... Upper Chamber Pressure...