Engine over heat

[jayvanman]

Hi all, (Jim)

I've just taken her out for a run before bringing her up to show in the for sale section of Busfest tomorrow.

Don't think I'm coming

Got back after the run out of miles and shes still quite hot.

whilst I was looking in the engine bay I could hear the oil moving around inside the engine, is that normal ?

It's kind of like a glug/drip, maybe from the oil cooler.

I took a video, the image on which is pretty bad as it's dark, but I wanted to record the sound. You can hear it, pretty regular , almost every second.

Your thoughts please.

Jason

[jayvanman]

How do you upload videos ?

[vwJim]

You're hearing fuel, not oil I'd expect.

[JonnyCJ]

Are you running OG tinware ? If not the repro stuff will in all likelihood not have the correct vanes on the cylinder tins to pass sufficient air to nr 3 and slightly less critical, nr 1 cylinder.

Also - do you have a thermostat fitted ?

Finally, are you running heat exchangers or J tubes on the exhaust ?

[jayvanman]

I'm not sure if it's on tinware. It did seem to fit together ok. I have noticed that the little piece that goes around the heat riser, you know the little piece that clips around the upright pipe with the cardboard type insulation(sorry i dont knkw the name) but once half is on the very back bit of the engine tinware that goes over the bottom pully, and the other half bolts onto the head tinware.

That little piece is missing.

Having said all of that my van has run for months prior to this with no problems.

I've noticed she running fast on idle as well.

Jason

[jayvanman]

I don't have a timing gun to do the timing

[jayvanman]

Running heat exchangers.

The cables to the cab are not connected

[JonnyCJ]

Check your thermostat is opening and closing when get getting hot/cooling down.

[jayvanman]

Hello guys.
I hope you've all had a good Xmas and new year and raring to get stuck into 2020 !

I've been away since middle of October but now I'm back I need to get Laura sold so it's back on with this engine over heat.

Yesterday I checked the valve clearances. I had found a website and it said to set to 0.2.

Despite me setting the clearances to 0.15 last time the 0.2 feeler fitted through, the valve that is on piston 3 , of the middle two it's the one closest to the front, this valve was loose - again. Also most of the valves on the right hand side needed a very slight adjustment with the exception of the middle valve that is closer to the front.

The engine is filthy with oil, she's dropping quite a bit which I thought was coming from the rocker cover seals but whilst she was warming up I did notice a fresh drop of oil on the pushed tube that had come down from above. This was on piston 3 or 4 and one of the middle two pushed tubes, I think it was the one closer to the engine.

I took her for a drive and all seemed fine for a while but once she started to warm up she once again started to make that clatter kind of sound. Hard to put it in words, but if you think of the clanking kind of sound that the old diesel transits make when they were running fine. KIND Of like that, but only at low revs - say up to 1500/2000rpm, then it's goes away. After about 5 to 10 mins driving and I'd started to notice the noise I bought her home.

She was quite hot and I left her on the drive for a bit, when I went to move her into the garage I couldn't start her, no spark I think. Going to try again this morning and if she doesn't start I'll check/clean the spark plugs and if no joy after that ill replace the condensor.

I've got her booked into my garage for a tune up as the guy didn't have his gun last time but I think it's going to need more that that.

Let me know your thoughts.

Jason

[Vwstu]

Hey just been reading through your post. I know it’s not directly anything to do with engine or problem as such and sounds like you’re thinking of selling so obviously don’t want to spend mega amounts of money but is it worth fitting an oil temp gauge so as driving you can keep an eye on what’s going on and may help to avoid possible disaster with melting expensive engine parts etc

[jayvanman]

Thanks vwstu.

Checked the Sparks earlier and gave them a scrub. But that wasnt the problem.

Up on looking inside the dizzy. I noticed the plastic from the condenser had melted ! The push on part had contacted with the thin copper and the copper wire has come loose from the lower plate.

New condenser and solder the wire back on should get the old girl going again but I fear this is not a cheap fix !

I'll get her running over the weekend.

But there is still the underling issue of why she's over heating ?
Cracked head ?

[vwJim]

To melt that, there's been a serious bit of heat.

Sounds like it still needs a good service, new plugs, redo the valves, check the dizzy operation + timimg and choke + thermostat operation.

Being that hot might well of caused some other damage, but need to find the underlying cause.