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Discussion Starter #1
Hi all i have a 307 hdi 2002 that i suspect may need a new head gasket.
My symptoms are my water level drops but when i remove the cap to top it up there is a back-draft and the water goes back to its level. P/s i dont remove the cap when engines running or within an hour of it running.
After reading on-line and asking around i am hoping it`s an air-lock i have as my oil`s clean and my tempreture gauge sits around 80-90 and my heaters are working. I have recently replaced the cap as my previous one became goosed and started leaking and would not tighten up fully. Then one day it blew off. I had to add 2 pints of water and i opened the bleeder at the thermostat housing until the water looked free of air.
but nothing changed, as my water level still drops about an inch from the Max,after driving the car for 20mins Causing the Stop Message to come on and Bleeping alarm cause my coolant is low. Then when i go to top it up after car`s been switched off for at least an hour, there is a sudden rush of pressure and the water level is back to Max level.
Is there another Bleeder ? I can only locate the one at the Thermostat (black dust cap) Had a good look below the brake fluid resevoir on the water pipes heading to the Matrix but no joy.
Any advice would be much appreciated as i have 2 long journeys to do and now thinking of hiring a car to save breaking down and doing further damage. Thank you for a great Forum. And sorry for posting this in the wrong place yesterday. Big Respect to Mooseman for pointing me in the right direction. :thumb:
 

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Hi djquickfit, sounds like you have exactly what i was experiencing, there is another bleed nipple right at the rear of the engine (near where you was looking) but you have to remove plastic air duct to get to it and then its clearly visible. I have bit the bullet and started to strip mine down but in no rush as i have my everyday car. Fingers crossed for you it only requires bleeding! Good luck.
 

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Discussion Starter #3
Hi Juddy thank you for your reply, thats given me some hope so im heading to the car now and have another look. Sorry to read about your issues, thats my biggest fear as i dont have the cash or experience to tackle changing the head gasket. I need to drive 120 miles tomorrow very early in the morning for my uncles funeral, so the pressure is on. Thank you so much for replying and good luck with your own one. Will let you know how i get on one way or another. thank you.:thumb:
 

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If the head gasket is gone on these engines it pressurises the coolant system and when you remove the cap you will KNOW something is not right as if bad it can blow the cap away :)

I recon both of you have airlocks as i have had a few of these over the years with gasket issues and they will use a lot of water as it turns it to steam.

I run them without the cap fitted drive around with heater on full heat and after a couple miles top up this usually clears all the air if after doing this it blows all the water away then you do have gasket issues :)
 

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Discussion Starter #5
Thanks Reliable, tried that idea you suggested. Before i read your idea i was out at the car 307 sw hdi 2002 (90) Remapped recently to (115)
With the cap off and water at Max level,i started the engine,stood and watched my water level slowly going up.When it got near the top i opened the bleeder and the water returned to Max, so all air gone (i thought)
Then i took the Revs up to 2000rpm and after about 10mins my expansion tank overflowed.
My temperature was at 90 at this point and my radiator fan never kicked in.
Im getting plenty heat inside the car but now im thinking Thermostat although all pipes are warm (above & Below)

Juddy--i could not find the 2nd Bleeder, the engine is set that far back Peugeot gave them a 2nd Oil Filler lol.
 

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2nd bleeder is on heater pipes so if your heater is good its not worth bleeding that one i rarely use the bleed screws as it can be bled easily running with cap off.

2K revs for 10 mins stationary i would expect the water to rise a bit anyway as it gets hotter.

Water pumps do sometimes fail on these and in this case the heater would normally only work when engine is hot and get colder once moving.
 

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Unfortunately like reliable406 says it sounds very much like the head gasket and it's just a matter of time before it goes altogether. If your going a fair distance tomorrow just make sure you take plenty of water with you and then when time and funds allow get the work done! Good luck for tomorrow.
 

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Discussion Starter #8
Thank you Juddy, Managed to get there and back but like you said plenty of water with me to top up. I stopped every 20 mins and the expansion tank was empty every time, Never over-heated and the Temp gauge never went any higher than 80-85. Oil and Water still not Contaminated.Never heard the fan kicking in either and still getting plenty of hot air in-side, but i did notice yesterday that when i put the Air-Con on it didnt feel as cold as it has been recently. Can only Accept now its the Head Gasket and the Water must be steaming off via the exhaust. 157,000 on the clock so i got 6,000 miles driving since getting the car 2yrs ago.
Thank you all who replied, i will use it for short journeys until the mot expires and decide what to do.:thumb:
 

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The more you write the more I don't think it's head gasket :sweat_smile:

Oil and water DO NOT mix on diesels with head gasket failure but you tend to loose heating and have pressure in coolant

I recon you have a leak that's
evaporating so you don't see the leak
 

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Thank you Juddy, Managed to get there and back but like you said plenty of water with me to top up. I stopped every 20 mins and the expansion tank was empty every time, Never over-heated and the Temp gauge never went any higher than 80-85. Oil and Water still not Contaminated.Never heard the fan kicking in either and still getting plenty of hot air in-side, but i did notice yesterday that when i put the Air-Con on it didnt feel as cold as it has been recently. Can only Accept now its the Head Gasket and the Water must be steaming off via the exhaust. 157,000 on the clock so i got 6,000 miles driving since getting the car 2yrs ago.
Thank you all who replied, i will use it for short journeys until the mot expires and decide what to do.:thumb:
Have you felt your large hoses to and from the rad when you leave the engine ticking over for 10mins?

Undo the cap and remove pressure from system, feel hoses and squeeze them...replace cap and start and check them after 10mins. You will defo be able to tell if they are over pressurised.

I had these symptoms and it turned out to be the dreaded H/G :eek: but fingers crossed its just a leak or air lock. I checked the service history with mine and the thermo housing cap was replaced so that told me there was a huge chance of a over-heat at some time.

Had to have the head skimmed and pressure checked as that is a good rule of thumb when stripped down, saves a rather huge headache when you replace gasket and its still as bad :thumb:

Another way is to ask a local garage to do a sniff test on your coolant tank and that should confirm it for you!! :nod:
 

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Discussion Starter #11 (Edited)
Thanks Everyone, had an experienced friend look at it yesterday and within 5 mins he told me it`s my Head Gasket thats gone.
He came to this conclusion after taking my revs up to about 2000rpm while watching what the water inside the Coolant Tank was doing and sure enough the pressure was visable, :eek: So worst case senario.
I was told about a bottle of sealer that you can buy,that claims to fix the problem but i laughed that one off as i remember seeing people putting raw eggs in to cure a burst radiator, then hearing that it fried and left them scrambled lol then either didnt work or they scrapped the car. Then the cement packs you could buy and add to your system did work on my uncle`s car but when winter came around his heater Matrix was blocked with the stuff and had to be replaced.
Anyway £30 for a bottle of sealer is both tempting and off-putting.
As my mate said, what you got to loose, Well £30 for a start, :confused:


Never Look Down On Someone, Unless Your Helping Them Up.:thumb:
 

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Discussion Starter #12
Hi all, Maybe a Happy ending here as i deceided to buy a new thermostat and give it a final chance. For the cost of £6 and i was able to do it myself in 5 mins. My mate appeared and could not believe the difference as he told me last week it was a Cylinder Head Gasket Job. :nono:
I also removed the battery and air Filter box and this let me gain access to the 2nd bleeder on the Bulkhead. So i bleed all air out and after a run with it im not getting all the pressure or expansion tank overflowing.I will use the car locally and carry some water bottles just in case. Thanks again everyone for your help and i will report back after i am convinced one way or the other. :thumb:
 
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