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Post by jefferdp on Jun 21, 2017 19:05:15 GMT
Members,
Yes its me again, thanks for your help on the last one. Which after having the carb ultra-cleaned and using a re-ferb kit the car now runs fine.
The problem I now have is that it is running with the temp gauge not the "H" very hot, and gets to this stage very quickly. And thats with the extra electric fan I have added to help try and keep it cool as well.
Do any of you have any suggestions as to why this may be plz.
Many thanks Dean.
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Post by sd1 on Jun 21, 2017 19:10:39 GMT
what happens if you take out the thermo stat and run it ?
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Post by ady on Jun 21, 2017 20:51:23 GMT
If it gets there very quickly, is it actually very hot or is it just the guage saying that it is very hot?
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Post by bondbug750 on Jun 22, 2017 8:09:14 GMT
Temp' sensors for a Robin or Kitten (which had different instruments from Regal, Rebel and Bug) will read very hot. Also how much flow do you get from the heater tap at the back of the block? ...back of the blocks get lime scale - it's always best to run a Bug with the heater pipe work in-circuit and circulating rather than that tap turned off
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Post by jefferdp on Jun 22, 2017 8:35:23 GMT
Gent's
I will remove the thermo and see if that make any difference.
And come back to you.
Regards Dean.
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Post by sd1 on Jun 22, 2017 10:39:45 GMT
 While you have the thermostat out put it in some boiling water see if it opens/works
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Post by mikeluxy on Jun 24, 2017 9:25:18 GMT
This is an interesting thread....I have had no overheating issues (as yet) although the tap to the heater matrix is turned off....would you guys advise turning it on to help with coolant circulation...?
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Post by redbug on Jun 24, 2017 10:00:04 GMT
I don't think it makes any difference whether it's open or closed, some guys don't even have a heater fitted and suffer no issues. The most important thing with these engines is to make sure the coolant is circulating properly, they tend to suffer from a build up of grunge behind the number 4 cylinder. Mine was blocked and the engine ran fine until it was working hard like going up a long hill, it would then get very hot sometimes chucking coolant out the overflow. Once I discovered what the issue was and cleared it out there was no overheating at all.
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Post by mikeluxy on Jun 24, 2017 10:15:03 GMT
Do you have a heater fitted...? My quandary is that the Bug has been fine up until now ...By turning the heater matrix on would it help with cooling or perhaps cause problems LOL
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Post by vannin on Jun 24, 2017 11:21:39 GMT
as above, first thing you need to do is to ascertain if it is running too hot ?
switch it off and see if you can hold the radiator hose for a few seconds ?
if you can it's probably not far off normal running temperature,
and if you can't we need to investigate a bit deeper, let us know jefferdp
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Post by jefferdp on Jun 24, 2017 15:01:16 GMT
Gent's
All great suggestions, firstly i think I will check to see if the hoses are hot, but I do think they will be as the electric fan I fitted is kicking in.
Then I am going to go for a wash out of the system, as it has been stood for many years.
Regarding the heater, well yes it does have one which did have a small leak however I had that repaired and now has good flow when tested on the bench.
I have order and new thermo and will fit that when it arrives.
Will let you all know if any one of these fixes the problem or not.
Regards Dean.
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Post by redbug on Jun 24, 2017 21:43:15 GMT
Mine had been in storage for a long time, have you had the drain plug on the block out? If you are not getting a good flow out of there you probably have a grunge issue. Guys on the reliant forum swear by filling the system with cola , and running it for a day or two. A cheap way of flushing out all the horrors.
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Post by mikeluxy on Jun 25, 2017 17:20:08 GMT
Flush with cola...Is this strait up or a wind up....?  |
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Post by bondbug750 on Jun 26, 2017 8:08:28 GMT
Flush out with cola is a widely held idea ...I've not tried it but suppose that the citric and other acids would do the trick
Some people swear that adding a Calgon tablet to cooling water is the way forward ...I think giving the drain hole at the back of the block a really good rodding out is crucial (you need to make a small hole in the engine enclosure body a bit below and a bit forward of the drain plug position to get the rod or better still an engine oil gallery type cleaning "bottle" brush in)
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Post by jefferdp on Jul 5, 2017 8:50:13 GMT
Gent's
Head is now off and does not look to bad to be honest however the suggestions about the draining hole at the back of the block were correct.
By suing a drill bit by hand and slowly turning it in the hole, I must have pull out the equivalent half of the beach at WSM in muck.
And buy using a small plastic hose and a very large syringe i have now cleared out all the muck at the back of the block. So with luck when it all goes back together it will once and for all run as it should do.
Wish me luck, and thanks for all your help.
Regards Dean.
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While you have the thermostat out put it in some boiling water see if it opens/works
