The thermostat is always required on a water cooled engine, as per another comment to not have one means your engine will invariably run cold and be inefficient, consuming additional fuel and have implications to the engine life. oil viscosity will be higher than required to run a hot engine. Likely that the thermostat was purposely removed because of another coolant system problem, I think some one else mentioned a pipe blockage, it might even be an engine gallery (near the pistons) blockage. A good coolant system flush is required. Also check the timing as pre-ignition (i.e. timing adjusted to early) can cause overheating. All the best, Paul Johannesburg
It's not too uncommon for thermostat to be left out. But generally that means the engine takes longer to warm up. And means the overheating isn't to do with thermostat. But I note in another comment you say about finding a blocked pipe - fingers crossed unblocking that will sort your problem... So you can get cruising again... Good luck!
@@WingingItBoatingonaBudget not sure I will explain this very well but the hose went onto a very thin 3/4mm copper pipe. This pipe was quite long and the hose was bent I think restricting the flow through into the copper pipe. When I removed the hose (still with said copper pipe attached) I was not able to blow through. When I separated them I could low through both of them. So I made the copper pipe shorter so it's not as close to the bend in the hose if that makes sense haha
Hey Mark, I watched with wonder, then confusion and finally admiration....I wouldn't have a single clue what to do!! All I can do is mutter encouragement in your direction as i drink my tea! Be well and be safe.
Haha thank you Sean, I do appreciate your mutterings of encouragement. I may possibly now have figured it out. If I have then there will be another video soon! Take care, Mark
There should be a thermostate to regulate the engine warm up process. When the engine is hot enough the thermostate will open allowing the coolant to circulate. The engine will take alot longer to get to working temperature without a thermostate. If your engine is over heating it could be old coolant, air lock or worn impeller blades on the water pump.
Thank you very much for your suggestions. I may well have found and sorted the culprit, a blocked hose from the heat exchange unit! Fingers crossed I am just running the engine now to see how it does :-) Take care, Mark
I hope you have solved your problem. The fact somebody has removed the thermostat suggests they were trying to do a quick fix on a problem else where. A compression check on the cylinders will soon tell you if the head gasket is faulty.
I would think the engine had overheated before that's why there is no thermostat, to help more coolant flow around the engine. From your previous video you thought you had a blocked hose. To me the internal bore of that hose (and maybe others) and especially the copper tube you shortened, all look to be too narrow a bore for enough coolant to flow freely around the engine. Good luck Chris
Hi, thanks for watching. Yes quite possibly although I am wondering if for some reason it was removed when the engine was converted to marine use as there is an electrical plug at the bottom of the thermostat housing with nothing in it and a couple of wires which have been snipped. Seems very stranges! i think the hose I found blocked is some sort of breather hose as supposed to one the coolant travels through as there are large copper pipes for the coolant to go through. I still don't know much about this sort of thing to be honest but it seems to be running better now anyway haha. Take care, Mark
Hi Mark, hopefully you have now fixed it but just a point that having no thermostat will not make the engine overheat, it will actually run cooler,so I'm sure it's not a thermostat fault. However having no thermostat will make the engine run cold and will encourage engine wear so I would advise you to fit the new thermostat and check the water pump and for blockages on the system as they will make it overheat. Hope that makes sense :)
Makes perfect sense thank you Chris! I think I have found and remidied a blocked pipe since recording this! Just running the engine to see if that fixes it. After I thought logically how a thermostat works I realised that it would run cold if anything so is likely to be a coolant circulation issue :-) Thanks for taking the time to comment, much appreciated. Take care, Mark
I do so admire narrowboat owners who have a go at solving engine problems. One thing for certain is it's not all plain cruising when you own a narrowboat. Hope the problem will soon be solved Mark. 🤞🐞 Best wishes. Love to Daisy. 🤗.
Hi Barbara, thanks so much as always for watching a taking the time to comment I really appreciate it :-) I will always try to do things myself if I can or learn how to if I am unsure, unless it's something major. I think it's always good to be able to do things yourself and build your skills. Daisy says "hi"! Take care, Mark.
When draining water the best way is to loosen something to make a leak and then vacuum up the water with your wet and dry vacuum you must have one it is normal kit for a narrowboater
Hi there. We’re soon are moving onto live on a narrowboat and love watching vlogs like this! My partner is a car mechanic and said a lot of people remove the thermostat if there’s an underlying issue causing the repeated overheating, it’s a quick bodge to hide the inevitable for a while. Which usually I’m afraid to say it’s a head gasket, that’s the most common thing in this particular scenario. I hope you get sorted soon.
Hi Lisa thanks so much for watching and taking the time to comment :-) I really appreciate the input. Yes that worry has been on the back on my mind but I think I found my issue was a blocked hose from the heat exchanger to the thermostat housing. Still wondering why the thermostat is not there though! How long until you live on your boat? Do you have one already or in the process of buying? Take care, Mark
Thanks for your message. Fingers crossed for you that it’s something nice and simple! Hopefully our house sale will finalise in the next few weeks, we’re just waiting to sign contracts and set the moving date! I can’t wait, I’m like an impatient kid! we’ve found a beautiful 57ft narrowboat from a lovely couple who are happy to wait for us and the house sale to finalise. it all kind of fell in our laps, like it was fate, so we’re very lucky indeed! Fingers crossed not too long now and we can join you and the wonderful community living on the water!
I suspect someone took the thermostat out because it was overheating in the past - a bodge job really - I would think its a new water pump is what you really want - them old fords had a horrible pressed steel impellor which literally rusted away - Inspect your water pump I bet its buggered - and when you replace it do put your thermostat in - your engine will warm up quickly and run more economic - be sure to put some antifreeze/rust inhibitor in your system
Water pump might be faulty, remove alternator belt and check for lateral movement on bearing and buy a sniff test kit to check for head gasket failure, life in a nutshell had one and diagnosed his overheating issue as the head gasket on RU-vid.
Thank you for watching and taking the time to comment. I have since discovered that no thermostat is not unusual and should mean the engine runs cooler. So I thought poor circulation of coolant, as you say water pump or maybe a blocked hose. Think I found a blocked hose and may well have fixed it! Just running the engine as I type this to see how it goes. Thanks for taking the time to comment. Take care, Mark
Thanks for watching :-) I don't want to jinx anything but I think I have! I've also since discovered that the removal of the thermostat in this engine when converted to marine use is not unusual. Seems odd to me but hey ho
Yes and I have found out that they're often removed from this engine when it's converted to marine use which I thought was interesting. Not sure of the benefits of that but hey ho. Take care, Mark
