weekend oil fest

[dpoorsBenz]

is it normal for an amount of oil to excreted from a faulty filler cap on me 190 to cause smoke, when i say smoke, i mean call me big cheif smoking car.

now for the background:

last i week noticed that the oil level had dropped, so saturday i went to the garage on the way out, topped up the oil then proceeded to over tighten the filler cap to the point of no return (top came off in my hand). replaced said top which went on securley, but i noticed a large plum of white smoke following me down the dual carriageway, then pulls up at the local hyper mega mall, does me shopping comes back and finds the a copius ammount of oil hasd deposited itself on the floor. got home (with me following smoke). parks up, comes back out a bit later, and theres more oil. so a has the car running, lift the bonnet, and lo and behold theres oil pouring out of the filler cap onto the rocker cover down the block, exhaust, inlet manifold, and anywhere that wasnt covered already.

so today at work, jetwash the engine bay clean off unwanted oil,top upwith even more oil (£21.50 from shell, gutted ) stuff the filler cap with rags, mechanic says he's ordered me a new cap (never turned up) as of 4.30pm. on the way home rags become saturated oil goes every where and were back to square one , so tomorrow i'll be jeting the engine bay again and hopefully the caps come.

i think the seal had gone on me cap.

oh and on top of that the washing our machine breaks down today.

just one of those day, i think i'll chalk this one up as down to experience

 

[tom7035]

Hope you have a better day tomorrow!
On my car the oil filler cap is the same as the fuel cap. Yours might be the same, not sure, so you may be able to change it temporarily.

 

[television]

Sounds to me like you have crank compression caused by a broken ring (s) to blow that much out of the top andto make it smoke

Malcolm

 

[tom7035]

Possibly there is some blow-by but sure his main problem is the chain sprocket and cam chucking the oil out of the cover and dribbling all over the engine and exhaust causing his smoke on this occasion.

 

[clive williams]

Sounds to me like you have crank compression caused by a broken ring (s) to blow that much out of the top andto make it smoke

Malcolm

I noticed on a recent service on the 500E that I spilt a small amount of oil on the manifold and around the filler cap. I didn't think much of it but for days when the engine was warm and we had stopped white smoke billowed from under the bonnet.

Second piece of experience was that I have in my younger days foolishly ran an engine without the filler cap on to listen to the valve gear - told you I was younger! End result was that I ended up looking like a black and white minstrel!! There is enough pressure in the rocker covers to spray oil everywhere, just check out the state of the rocker/cam cover next time you take one off.

Clive

500E
E320CDIT210

 

[television]

I noticed on a recent service on the 500E that I spilt a small amount of oil on the manifold and around the filler cap. I didn't think much of it but for days when the engine was warm and we had stopped white smoke billowed from under the bonnet.

Second piece of experience was that I have in my younger days foolishly ran an engine without the filler cap on to listen to the valve gear - told you I was younger! End result was that I ended up looking like a black and white minstrel!! There is enough pressure in the rocker covers to spray oil everywhere, just check out the state of the rocker/cam cover next time you take one off.

Clive

500E
E320CDIT210

Fair comment clive, I surpose we never rev them much over 1500 with the cap off, I have left a dip stick out, and that gives the same effect. my 112 engine does not blow at all with the cap off.

Malcolm

 

[Ian Brown]

Fair comment clive, I surpose we never rev them much over 1500 with the cap off, I have left a dip stick out, and that gives the same effect. my 112 engine does not blow at all with the cap off.

Malcolm

Try leaving the cap off and take it for a run at 50mph then come back and tell us there is no oil over the engine.[no chance] my 20L diesel sprays oil if the cap is off due to the camshaft turning, i wouldn't like to take mine for a drive with no cap.

 

[tom7035]

I think it's 'blow-by' Malcolm is referring to Ian.

 

[turnipsock]

How can you tighten the cap to destruction?

We have a girl at work, Fran Monster, who can yank on a handbrake so that you need two people to release it. (If you have google earth, you should be able to see her)

The company runabout, a Vulva, uses a lot of electrics. We only ever do short journeys and the Vulva battery struggles after a while. The lights are on all the time and nobody can find a switch. The seats are electrically adjusted and heated. You can just imagine how much power is used moving the Fran Monster towards the steering wheel. The footwells light up as well, even though the passenger isn't there!

It turned out that Fran Monster was setting the heating control to 30C when she got in the car so the heater motor was running full chat without a chance of getting the car interior to 30C.

 

[Ian Brown]

How can you tighten the cap to destruction?

These caps get brittle with heat and they just snap

 

[dpoorsBenz]

I noticed on a recent service on the 500E that I spilt a small amount of oil on the manifold and around the filler cap. I didn't think much of it but for days when the engine was warm and we had stopped white smoke billowed from under the bonnet.

Clive

500E
E320CDIT210

Thats exactly how it started, topped it up, spilt a bit, smoked a lot!

shaun

 

[dpoorsBenz]

Filler cap

Well i managed to get a filler cap that fits snug (nice),

the trouble with the old one was that it was plastic and old, and brittle it actually broke where the outer and inner join inside the cap (poor, v poor).

there does'nt seem to be a compression problem,

and i foolishly ran the engine for about 15 seconds without the cap when i first got the car about 4 months ago, and still have a film of oil on the underside on me bonnet (and the bonnet was open at the time). it definetly comes from the cam and timing chain.

so just a wash away from cleanliness again, and we'll start over.

thanks for you thoughts, most helpful

shaun

 

[maldon]

I drove the 230K for about 10 miles at high speed on dual carriageway after having to make an emergency top up. Indeed the oil goes everywhere and when you first notice the red arrows effect in the rear view mirror, the old sphincter does mostly pout in a sort of 'I've just blown the engine up type way'..

Not being a complete @rse I had for some reason tucked the filler cap behind the rad when filling, as with trucks hurtling past three feet away was expecting if left on the topof the engine the car would rock and then the cap fall off, leaving me to try and find it in the dark and freezing cold.

Once you have got the leak prob sorted, I reckon you'll need a long fast drive to burn the oil off the manifold - I could not get shot by jetting alone.

 

[clive williams]

Well i managed to get a filler cap that fits snug (nice),

the trouble with the old one was that it was plastic and old, and brittle it actually broke where the outer and inner join inside the cap (poor, v poor).

shaun

Shaun,

I've done the same with the 50E's cap as I have to use a pair of pipe grips to undo the cap at service time. There is insufficient space to get a good hand grip to turn the cap as it is slightly recessed between the cam cover and the cam chain cover. Doesn't leak though as the plastic bit doesn't provide any seal.

Clive

500E
E320CDIT210