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Overheated

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bnicho Wolfsburg Wizard

436 posts · joined Feb 2009 ·

#874133
Driving to work this morning everything seemed fine with the world. Olive, my 74 Superbug ws running fine.

As I was idling in traffic on the freeway offramp I noticed quite a lot of smelly smoke around the front of my car. As my engine and most of the electrics are in the back, I assumed the E240 Merc in front of must have been a Diesel and was smoking a bit.

I went a bit further and the Mercedes changed lanes, but the smoke didn't. Then I looked in the rear view mirrors and realised smoke pouring out from under the back of my Beetle. Crap!

I pulled out of the traffic as quickly as I could. By the time I pulled over and buttoned off the oil light was flickering. Double crap!

I opened the engine lid and let the smoke dissapate. It seemed to be coming from every surface on the case. I assumed I had a massive oil leak somewhere, but I could not pinpoint anything other than the small leaks at a pushrod tube, the dizzy seal and alt stand it has always had. The motor was very hot, I could barely touch anything on it without risk of burning myself.

I allowed the engine to cool down for 15mins and checked the oil. It just on the minimum mark on the stick. 🙁

I topped up the oil until it was on maximum and started the engine. The oil light went out within a few seconds, there was no clanks or bangs and it idled okay. I disconnected each plug lead in turn and the engine revs dropped off, so all pots were still firing. There was no new oil drips either.

I drove the final 500m or so to work and it seemed to run fine. No flickering oil light, seemed to be no loss of power and there was no smoke to speak of.

I admit I had not checked the oil for a few weeks, as I honestly planned an oil change next weekend. 🙅

Surely it would not overheat just from being on minimum? This is it's first run of more than 10km or over 80kph in the last few months. It's only 15 degrees C this morning so not a hot day.

The engine is a bone stock 1600 twin poirt with an SVDA and electronic ignition. All tinware and hoses are in place.

Have I got away without killing my engine? Any basic checks (besides oil level) before I drive it home this afternoon?

Cheers,
Brett Nicholson
Melbourne, Victoria
1974 VW Superbug L - Olive 😎
1971 Morris Mini Moke - Mopoke
1966 Austin Mini - Audrey
1965 Morris Mini Traveller - Trixie
2007 Land Rover Freelander 2
2009 Nissan Pathfinder

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#874137
Sounds like all is good, you reacted quick enough so as to not cause any damage. Oil on min won't cook your engine. My guess is the fan has an obstruction. Is the firewall insulation still in place with plenty of clearance to the fan intake? Is the fan making any unusual sounds, just a leaf in the fan and it's output is reduced and it becomes very noisey.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

bnicho Wolfsburg Wizard

436 posts · joined Feb 2009 ·

#874145
matberry wrote:Sounds like all is good, you reacted quick enough so as to not cause any damage. Oil on min won't cook your engine. My guess is the fan has an obstruction. Is the firewall insulation still in place with plenty of clearance to the fan intake? Is the fan making any unusual sounds, just a leaf in the fan and it's output is reduced and it becomes very noisey.
That suggestion does makes sense. I didn't notice any unusual noises. However I replaced the clutch in July and cleaned up the engine bay while the engine was out. In the process I removed the firewall insulation and got rid of all the "foam of death" in the rear pillars and engine bay corners. Then I replaced the insulation. Perhaps I didn't secure it properly and it is blocking the fan. I will check before driving home.

I hope that is all it is. 🙂
Brett Nicholson
Melbourne, Victoria
1974 VW Superbug L - Olive 😎
1971 Morris Mini Moke - Mopoke
1966 Austin Mini - Audrey
1965 Morris Mini Traveller - Trixie
2007 Land Rover Freelander 2
2009 Nissan Pathfinder

ian.mezz I never said, I could write or spell

3,913 posts · joined Sep 2004 ·

#874157
bnicho wrote:
matberry wrote:Sounds like all is good, you reacted quick enough so as to not cause any damage. Oil on min won't cook your engine. My guess is the fan has an obstruction. Is the firewall insulation still in place with plenty of clearance to the fan intake? Is the fan making any unusual sounds, just a leaf in the fan and it's output is reduced and it becomes very noisey.
That suggestion does makes sense. I didn't notice any unusual noises. However I replaced the clutch in July and cleaned up the engine bay while the engine was out. In the process I removed the firewall insulation and got rid of all the "foam of death" in the rear pillars and engine bay corners. Then I replaced the insulation. Perhaps I didn't secure it properly and it is blocking the fan. I will check before driving home.

I hope that is all it is. 🙂
yeah i seen that before ok at idle , but once you rev motor stuff gets suck in enough to stop air flow.
😂🤪😂🤪😂
car forums. where a lot of peoples good intentions end up taking a good old car off the road forever never ever to see the road again. 🥲

bnicho Wolfsburg Wizard

436 posts · joined Feb 2009 ·

#874223
You were dead right, the insulation was blocking the fan intake. Rather than rip it out in the carpark I crushed a couple of coke cans and wedged them tightly between the insulation and the fan shroud. I drove the 35km home without an issue and Olive is apparently non the worse for it. I've been very fortunate. 🥲
Brett Nicholson
Melbourne, Victoria
1974 VW Superbug L - Olive 😎
1971 Morris Mini Moke - Mopoke
1966 Austin Mini - Audrey
1965 Morris Mini Traveller - Trixie
2007 Land Rover Freelander 2
2009 Nissan Pathfinder

donn Wolfsburg Elder

3,515 posts · joined Nov 2005 ·

#874225
pod wrote:how good is this forum 👍 great to see all is well with Olive 🙂
we all know its realy bloody great! 👍
I dream of a day when a chicken can cross a road without being asked for it's motive!

bnicho Wolfsburg Wizard

436 posts · joined Feb 2009 ·

#874242
Agreed, the advice and help around here is awesome.😎
Brett Nicholson
Melbourne, Victoria
1974 VW Superbug L - Olive 😎
1971 Morris Mini Moke - Mopoke
1966 Austin Mini - Audrey
1965 Morris Mini Traveller - Trixie
2007 Land Rover Freelander 2
2009 Nissan Pathfinder

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#874255
Great to see Olive is alive to see another day...

I check My fan all the time when I have My engine lid open at the top for summer...

I once found a long rag I had been using in the fan....

so, I check it every day in summer...

Maybe that's why so many people don't have any insulation in their engine bays??

cheers

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

bnicho Wolfsburg Wizard

436 posts · joined Feb 2009 ·

#874633
I like the idea of the insulation, cuts the noise down. So I'll be trying to secure it properly next weekend, and give her an oil change at the same time. But If can't secure it properly, out it will come. For this week I am using the MR2 as my daily.

Sorry to hear you were not so fortunate Lee. 🙁
Brett Nicholson
Melbourne, Victoria
1974 VW Superbug L - Olive 😎
1971 Morris Mini Moke - Mopoke
1966 Austin Mini - Audrey
1965 Morris Mini Traveller - Trixie
2007 Land Rover Freelander 2
2009 Nissan Pathfinder