Gggrrrrrr, only wanted to checked water level

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Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 6:14 pm

I'm reet  peed off, I only bloody took the cap off to check the water level, now it's fecking overheating , bottom hose is Luke warm, top hose hot, warm air in cab. water being purged into expansion tank, steam and some water coming out of cap.
Thermostat stuck half way??
Any ideas welcome
Will know in the morning if any water has been siphoned back in, I doubt it as the cap is leaking now
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Re: Gggrrrrrr, only wanted to checked water level

Post by wrightgeordie on Thu Jan 28, 2016 8:48 pm

Hi.  Hope this helps:
First locate both coolant filler caps - the expansion tank filler cap in under the passenger seat and the radiator filler cap is behind the panel on the front of the van with the Daihatsu badge on it.  No screws etc just pull it and it will tip forward.
NEVER remove either of these caps unless the motor is stone cold and turned off.

To check your coolant level you don't need to remove either cap, you can see the coolant in the expansion tank and as long as its between the high and low markers its OK.
If the expansion tank for some reason should become empty you then need to fill both the radiator and the expansion tank.  Take care to clean both caps carefully before you refit them - clean both the rubber seal and its seat in the Rad and Expansion Tank. Rad Caps pressurise the cooling system to increase the boiling point of the coolant if yours isn't sealing it would cause some of the symptoms you have.
Start the motor and let it warm up on tick over, as the coolant warms up it expands so you will get some discharge from the expansion tank overflow - this is normal.  When the motor gets to normal operating temperature turn it off and let it go cold again, as the motor cools it should draw some water from the expansion tank to top itself up - again normal.  With the motor cold do a visual check on the expansion tank level and top up to the mark if needed.  
If the motor draws all of the water out of the expansion tank again repeat the whole process up to twice more.  Beyond this you would need to get a cooling system diagnostic done.
Good Luck
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 9:08 pm

Unfortunately on these You have to remove cap on pipe under seat to check system is full, the expepansion tank isn't a guide to wether the system is full or not, the tank can be full and system empty and vice versa.
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 9:11 pm

I'm just waiting to see how much the system draws back in, if any, from the tank, but it was right to the top and still filling after a 15 min drive. I have new caps on order but feeling pretty pessimistic about it at the mo due to previous experience of head gasket
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Re: Gggrrrrrr, only wanted to checked water level

Post by wrightgeordie on Thu Jan 28, 2016 9:16 pm

Have you looked at the radiator coolant level?
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 9:22 pm

Yeah, I gave it a bit of a flush out and topped it all up before I took for a bit of a run this eve. the cap had started leaking a couple of days ago water was low in pipe this morn, topped it up, water was low in pipe again after work. (It's a 2 min drive to work) And the 15 min run this eve it purged most of the water into the tank, would have overfilled if I'd driven further
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 9:24 pm

It's the purging of that much into the tank that's concerning me, I've a couple more caps on order but a leaking cap shouldn't  cause that much to end up in tank... I don't think!

Oh, and the bottom hose not getting to temp is not normal
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Re: Gggrrrrrr, only wanted to checked water level

Post by wrightgeordie on Thu Jan 28, 2016 9:48 pm

Hmmm
You may need to get your cooling system checked, You could have a thermostat problem, a water pump fault a hole in the radiator or a leaking head gasket.  Checking both the pump and the thermostat are easy jobs and if both are working OK a simple gas check on the coolant will tell you if the head gasket is leaking look for water on the floor or steam round the rad matrix.

You may not be aware that a Hijet radiator is not a normal type radiator, the matrix and bottom tank are split in two half's. Hot water from the motor is pumped into the left half of the bottom tank, it rises through the LHS of the matrix across the header tank - down the RHS matrix and back to the motor through the RHS bottom hose. I've never seen another system like it but apparently its required to fit with the design of the cab. When you say that the bottom hose is cold you need to check both bottom hoses. If both sides are cold you have no recirculating coolant.

Sorry for the waffle


Last edited by wrightgeordie on Thu Jan 28, 2016 10:09 pm; edited 1 time in total
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Re: Gggrrrrrr, only wanted to checked water level

Post by PFM on Thu Jan 28, 2016 10:02 pm

Srping could be weak on the cap too, adding to the purge. It wasn't overheating yesterday so would be a huge coincidence if that suddenly started just because you tok the cap off. I'd be tempted to wait and see how it goes with new caps first.

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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Thu Jan 28, 2016 10:16 pm

Ok, thanks, yeah maybe the spring is weak now and it's not holding the pressure. it would be huge coincidence if there was some other reason for overheating, but hey, I was all excited for it to pass the mot so somethings bound to go wrong Laughing
Can't see any leaks from rad I did park in a dry spot when I got back so will go and have a look in amo when I take the dogs out.

So far I've not seen any gasses going into water via the tank like I did last time but the gasket was in a very bad way theN!

I think the water pump is working as its pushing water out the rad when I switch engine on with the cap off .not sure if that's a "correct" test method!! And I presume it's supposed to do that, I seem to remember it doing it before when I put it all back together!?



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Re: Gggrrrrrr, only wanted to checked water level

Post by wrightgeordie on Thu Jan 28, 2016 10:20 pm

I agree with PFM fit your new caps when you get them and top up as per my previous.

Good luck
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Re: Gggrrrrrr, only wanted to checked water level

Post by Logi on Fri Jan 29, 2016 10:51 pm

Could be a stuck stat, bad cap(cheepies don't last well) or a wee leak, bootom hose not toasty = problem Sad
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 1:28 pm

Yayyyy, new caps arrived .... Gggrrrrr aaaagggg, there's a hole just under the lip Evil or Very Mad so no cap is going to solve this problem. I'm presuming this can't be welded so need a whole new pipe, what's that called?! I'll post a pic and request for parts in appropriate thread when I can remember how to do it
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Re: Gggrrrrrr, only wanted to checked water level

Post by GEORDIE on Tue Feb 02, 2016 3:33 pm

Cant it just be soldered up,I wonder??

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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 6:16 pm

GEORDIE wrote:Cant it just be soldered up,I wonder??

I don't thinks so, it needs to hold the pressure of the system and it looks like it might just work its way all the way round

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Re: Gggrrrrrr, only wanted to checked water level

Post by HighlyJetted on Tue Feb 02, 2016 6:21 pm

If its a 1.3 those top pipes are getting very hard to find even half reasonable condition.

I had one made for a customer, which it was about £250 including vat.

993cc ones are easy to make, I have made a few out of copper.

From, the photos that is pretty knackard.

And if they are corroded there, there is also small pin holes else where on that metal pipework section.

You are lucky if that has not caused bigger coolant system problems.

If you need a bodge, you can clean them up on the outside with scotchbrite and a rotary wire brush, then build it up on the outside with chemical metal 2 part epoxy.
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Re: Gggrrrrrr, only wanted to checked water level

Post by HighlyJetted on Tue Feb 02, 2016 6:24 pm

p.s. your coolant looks like its very much water! There is no pink or green bright colour to it. Anti freeze stops the pipe work from corroding.
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 7:00 pm

Yeah coolant had just been flushed out. Looks like I'm vanless then
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 8:07 pm

Wouldn't something like this do? (Not sure of diameter, they have 25 32 and 38 I think
http://www.carbuildersolutions.com/uk/in-line-radiator-filler-neck-32mm
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Re: Gggrrrrrr, only wanted to checked water level

Post by PFM on Tue Feb 02, 2016 8:14 pm

I can't see why it wouldn't work with a bit of re-plumbing - it's certainly the sort of thing I'd have a go with.

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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 8:49 pm

Just realised I'd need to drill into it to add another hose attachment, the other small gauge one that goes to the thermostat I think, a plus being aluminium but not sure how I'd fix it on so it doesn't leak
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 02, 2016 10:38 pm

HighlyJetted wrote:

You are lucky if that has not caused bigger coolant system problems.

If you need a bodge, you can clean them up on the outside with scotchbrite and a rotary wire brush, then build it up on the outside with chemical metal 2 part epoxy.

Fortunately the hole wasn't that big, untill I went at with a wire brush, when I took the cap off to check level it was fine, I must have had a sixth sense that told me something was wrong before it caused a problem and I only drove it the short distance after that which was when I found the cap was leaking (now I know the holes there it was probably that!)

Got an idea for a bodge but it will have to wait till I have the time and energy next week now. And I must remember to take pictures just in case it works!

For a more permenant bodge using the top pipe I've found I'm going to need something like this, but for a bigger pipe! Totaly aware they probably don't exist!

http://www.ebay.co.uk/itm/Self-Cutting-Drain-Valve-15mm-MT-Cock-/271747387357
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Re: Gggrrrrrr, only wanted to checked water level

Post by PFM on Tue Feb 02, 2016 10:43 pm

Hope you used a rag to stop the brushings falling into the system! Bodges are good, I've used 2-part epoxy putty to hold bearings in on machines etc and found endless uses for araldite (tubes better than the syringe) - but what about Sugru? It's brilliant stuff!

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Re: Gggrrrrrr, only wanted to checked water level

Post by Woodie on Wed Feb 03, 2016 6:15 pm

[quote="wrightgeordie"]

To check your coolant level you don't need to remove either cap, you can see the coolant in the expansion tank and as long as its between the high and low markers its OK.

You might like to review this statement Geordie . What you water you find in the expansion bottle has little bearing on what is in the Cooling System on most Hi-Jets. Unless the cooling system is 100 air free in other words FULL of water the Cooling System then it CANNOT SYHON BACK INTO THE Cooling System. You can't defy the law of Hydraulics.
If you get air in your Braking System, they don't work properly do they? Faulty water pump?? Water pumps don't stop working. I have only once in 45 years seen an impellor come off of its shaft. It can only be faulty if it is leaking due to the seal leaking and that usually if the bearings are worn or have failed. But that is very rare these days as water pumps rarely have a fan blade on them as back in the 60's and 70's which was what mostly caused that problem. The only other way is over tightening of the drive belt. Have you tried to tension a Hijet Alternator belt.? You are lucky if you can get it tight enough to stop it squealing.

There is quite a bit of information on here from Highly Jetted and myself and more recently Raggy on the CORRECT way to fill up a Hi-Jet Cooling System. It is imperative that it is done CORRECTLY. It is because so many Garages and private owners don't know how to fill the system that the Hi-Jet has got a reputation for overheating and subsequently head gasket and warped head problems. IT NEEDN'T be so. There is plenty of help and advice on this Forum thanks to the great crowd of contributors on here.
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Sun Feb 07, 2016 9:01 pm

Tomorrow I will find out if chemical metal is my new best friend Razz

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Re: Gggrrrrrr, only wanted to checked water level

Post by Woodie on Mon Feb 08, 2016 9:22 am

If you are going down the epoxy resin route then may I suggest a thin strip of plastic from a margarine tub placed outside the hole and held in place with a suitable sized jubilee clip. Clean the metal up as well as you can with emery paper and grease free too.
Aply the resin thinly on the inside of the neck remembering that the more you put on, the more you will have to sand down to shape to get the cap to fit.
After a few mins remove the clip and plastic and aply a second dose to the outside while the first dose is still tacky. Once again depending where the hole is don't over do it as the lugs on the Rapcap will need to be clear of the resin you have put on.
I hope it all goes well for you.
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Re: Gggrrrrrr, only wanted to checked water level

Post by Woodie on Mon Feb 08, 2016 9:29 am

Have just noticed in the picture the strip of copper. The epoxy will stick to that so put some on strip before you put it in place, and then put the jubilee clip on. Don't over tighten it. Just enough to hold the strip in place.
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 09, 2016 4:40 pm

And the saga continues, chemical metal seems have solved that problem at least temporarily, but the battery is now flat, and I'd forgoten to recharge my booster after last camping trip, so it's now on charge, but doesn't seem to want to fully charge.
I've been looking at other vans as I had already decided that this year I was going to see if I could find something with power stearing and that kept me warm on on my November drives to Cornwall, the fiat doblo high roof is looking a favourite at the moment, of corse I need the hijet working so I can actually get to these vans for sale Rolling Eyes
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Re: Gggrrrrrr, only wanted to checked water level

Post by elfin girl on Tue Feb 09, 2016 5:00 pm

Didn't explain that properly, battery was flat, used booster to start it, ran it for a while, everything seemed in order, need more fuel so didn't go anywhere as it was late, accidentally left interior light on for a day and some, booster not enough charge to start again as it was low on previous use
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Re: Gggrrrrrr, only wanted to checked water level

Post by Logi on Tue Feb 09, 2016 6:16 pm

Common misconception, alternators aren't great at charging dead batteries, they're designed to work with a higher load at lower rpm than a dynamo saving the battery but it takes around 20 hours running to fully recharge a flat battery with an alternator. Invest in a battery charger Smile
And the heater in a Hijet should melt you?
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