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Coolant leak from somewhere? Gen 1-Update

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andyisavinit View Drop Down
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    Posted: 02 Feb 2016 at 16:58
I knew I was losing coolant and since it was a nice day and I'm supposed to be working from home, I went out for a ride.

Came back and found the leak. Well saw the coolant appearing but i don't know where from. In the pic the coolant is collecting and dripping off the bolt arrowed and also running down where I've circled it (it is coolant, it just looks black in the pic).

I can't see where it's materialising from.

You can see this has obviously been happening for a while as the engine is brown from here down where its evaporated away.

I've tightened up all the hoses a while back that are in easy reach around the rads and expansion tank etc, some of them were not tight, but haven't done the ones right at the top of the rads.

Or could this be way more serious ie gaskets

The water pump weep hole looks dry, and its no where near where the waters coming from anyway.

Your thoughts would be most appreciated.










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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 19:00
Your link goes to a thread on a water leak on a 2 stroke Rs125 ?
 
You can't read anything into that as the only common thing with the Rsv is the Aprilia badge.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 19:45
What a dick. Should have checked that, I just followed the Google search link when input in rsv Blar Blar blar

I'll delete it if I can from the post. Still could be gaskets, no?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 20:43
Originally posted by andyisavinit andyisavinit wrote:

What a dick. Should have checked that, I just followed the Google search link when input in rsv Blar Blar blar

I'll delete it if I can from the post. Still could be gaskets, no?
 
it's rare but anything is poss. Got pics of where on the motor the water appears to come from
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:03
Can't you see the picture on my first post? With a red circle and red arrow? I can see it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:15
Looking at picyou leaking from rad nkt from there
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:20
It could be from the cylinder base gasket for the front cylinder but it's super rare. I'm with mark and it's more likely dripping down from somewhere higher up or rad etc.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:36
Well that's good to hear. I have checked and tightened all the clips on the rad pipes that I could get to easily. There is more that I can't see or get to easily. ie right at the top of the rads and in front of the engine. It's a spaghetti junction of pipes and linkages. I couldn't see any signs of leaks. Must be trickling down a pipe where I can't see. Well hopefully.

It seems I fear the worst everytime with this bike.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:39
Originally posted by markrsvr15 markrsvr15 wrote:

Looking at picyou leaking from rad nkt from there


Hi mark. Dyou mean rad nut? Will check Haynes too
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 21:45
No mate my mate had same problem it was his rad leaking
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2016 at 22:22
Seems odd that coolant is making its way onto the engine and not just drippind down a pipe or the rad itself
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 20:25
I am at a complete loss as to where the leak is coming from. I took stuff off so i could get a very good look at the 2 bolts that the coolant is dripping from. Fired her up and before it got really hot coolant started to drip from both the bolts and some was trickling down below where the engine number is stamped on the engine (between the 2 bolts).

I cleaned everything up and everything was dry before i ran the engine. If it was running down from above these 2 bolts (ie the rad) i would see it, but all looks dry directly above them and around them. It looks to me that the coolant is actually coming from these bolts. What are these bolts? Look like cylinder head bolts.

Have a look at these pics and video. You can see blue coolant on the bolt head of one of them.







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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 20:33
Sorry the pictures are massive
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Post Options Post Options   Thanks (0) Thanks(0)   Quote IanG Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 21:16
If it's actually leaking round the threads I would think it's the head gasket.

It certainly looks dry all round the surrounding area though,so unless it's leaking from somewhere above and dripping down onto that bolt head I can't think of anything else.

Hopefully it won't be that and some knowledgeable person will be along with an answer shortly.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 21:27
Old mechanics trick, cover the area in powder, talc or flower etc and go for a slow bimble so it doesn't all blow away. If the water has run it will leave a trail in the powder revealing which direction is has run from.
 
Might give you a bit more of a clue.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Prsv Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 21:40
Just a thought was it out in that heavy frost we had the other week is the coolant anti freeze ok. If coming from bolt what about copper or rubber sealed washer as a cheap fix. Not sure about distortion just taking those bolts out thou.
Paul.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 21:50
Originally posted by Prsv Prsv wrote:

Just a thought was it out in that heavy frost we had the other week is the coolant anti freeze ok. If coming from bolt what about copper or rubber sealed washer as a cheap fix. Not sure about distortion just taking those bolts out thou.
Paul.

It was in a garage so didn't freeze. I thought about just putting washers on but like you say distortion could be an issue. Where else could the water be leaking in the engine, if the gaskets gone? Barrels?There's no smoke from exhaust. Worrying.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2016 at 21:59
Originally posted by Spoonz Spoonz wrote:

Old mechanics trick, cover the area in powder, talc or flower etc and go for a slow bimble so it doesn't all blow away. If the water has run it will leave a trail in the powder revealing which direction is has run from.
 
Might give you a bit more of a clue.

Thats a good idea. I probably don't need to go for a bimble to find out if it coming from the threads of those bolts. I'll dry it all up again and cover the area in talc. Or stuff a load of bog paper around the area directly above the bolts and i should be able to tell if the waters coming from the bolts. It beads quite quickly.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2016 at 11:51
Well I been so busy the last few weeks this is the first chance i've had to really really track down where this is coming from.

It's not good news - it's definitely coming from those 2 cylinder head bolts.

Running the engine up to temp I also managed to melt the curved plastic fairing bracket holder thing. The one that holds the rear fairing away from the hot exhaust pipe. Marksrv - you got one of these?

Anyway least of my worries.

I got a spanner on one bolt and did manage to turn it ever so slightly. So it's not loose. Couldn't get to the other which isn't dripping so much, but they both leak.

So I assume its a bad fitting head gasket then or cracked one. Am i right in thinking that the coolant, when running through the engine, is near this damaged gasket and then leaking down the threads of the bolt?


Is there anything i can try before taking the engine out?  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote IanG Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2016 at 14:30
If it was me I'd be on the phone to he who knows before doing anything drastic.

I've always found that even when he's very busy Griff will take the time to give advice even if it does him out of work Clap

I doubt it's anything that he's not seen before on an Aprilia engine
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Prsv Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2016 at 20:30
What about trying K seal (other products are available) before stripping it. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2016 at 21:05
Coolant surley it's dripping down from rads my mates was leaking before looked like was coming from pump it was actually coming from right rad
Go big or go home
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 17:51
Originally posted by markrsvr15 markrsvr15 wrote:

Coolant surley it's dripping down from rads my mates was leaking before looked like was coming from pump it was actually coming from right rad


Yeh you mentioned this before. I was hoping you were right, but I really can't see how it can be coming from the rad though. I can get quite close to the bolts and it's not being dripped on from above. It just starts to bead on the head. There's nothing above it that could be dripping.

Mark have you got one of those curved plastic fairing holder things , I melted mine.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 18:13
The rad are connected but a pipe directory above this picture and the rad mounts are too my mate had a hole about a 1mm if that it was just spraying out my mate noticed it in the light. Can you see bits on your forks at the back off them.

On the belly pan you mean near exhaust
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 20:44
Originally posted by markrsvr15 markrsvr15 wrote:

The rad are connected but a pipe directory above this picture and the rad mounts are too my mate had a hole about a 1mm if that it was just spraying out my mate noticed it in the light. Can you see bits on your forks at the back off them.

On the belly pan you mean near exhaust


Yeh near the exhaust. It's a curved bit of plastic that the fairing screws to. It curves round a pipe.

This is it.

http://m.ebay.co.uk/itm/NEW-GENUINE-APRILIA-RSV-1000-98-03-SILENCER-PROTECTION-BLACK-AP8138565-MT-/172017927251

I'll have another look for a leak at those places you mention. What do you mean by bits on back of forks. Water? If it is leaking from that rad pipe it must be spraying as you say, as its forward of the bolts. So not dripping.
I appreciate your help. Thanks.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 21:06
Originally posted by Prsv Prsv wrote:

What about trying K seal (other products are available) before stripping it. 


Just done some reading on other forums via Google and this stuff seems pretty good. Will speak to griff also. Thanks.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 21:06
It's really fine spray I mean really fine we was looking with engine driver running and my mate saw it buy chance in the light it was coming from bracket that connects rad to frame near the horn
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markrsvr15 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 21:07
We thought it was his water pump at first as it was over starter motor and round in that area
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Post Options Post Options   Thanks (0) Thanks(0)   Quote IanG Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 21:14
One of my CH radiators did that in the house,it was so fine there was no evidence of a leak Confused

I just caught a flash of something in the sunlight and got up close wondering what it was,even the carpet wasn't damp as it was so hot and such a fine spray it was evaporating before landing.

So the idea is very possible
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2016 at 21:50
Right I'm going to check for super fine spray next. Did you see that link mark?
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