Head gasket

boginhood · 11-11-2007, 18:17

Hi all. Octavia 110 tdi, lost water a couple of times from the expansion tank

not sure if the presure cap is falty or the head gaskets gone

. The water in the tank has a black somthing on the top, but not oily more of a powdery type of thing. With the cap off if you rev it a bit the water will rise and a few bubbles come up

not sure if its the gasket or trapped air. If you put the cap on the hoses don't pressurise like you would expect if it was the gasket (unless very slight leak).
If you push it on the motorway after a while the temp will rise drop and lose water out of tank only.
Any ideas anyone.
Cheers

georged30 · 11-11-2007, 20:02

replace the presure cap it is the easy and cheap way to start troubleshoting.

martziniuk · 11-11-2007, 20:04

Any white gunk on the oil filler cap?

sicknote · 11-11-2007, 20:50

or the dipstick?

boginhood · 11-11-2007, 21:27

Oil is fine, could the black floaty stuff in the water be from the exhaust gas, like i said its not oil but i suppose it could be carbon deposits, if you run it to temp with cap off after a while when you rev it will rise and come out the tank, with the cap on it will come out the tank if you drive it hard.

If it is the head gasket are they much of a pain to do.

Liverpool-Lad · 12-11-2007, 00:27

When was the waterpump last done? They have a habit of going Pete Tong if not replaced at required intervals.

boginhood · 12-11-2007, 12:00

Have not replaced waterpump but would it not overheat if the pump was faulty? also took it steady today (not above 2500 rpm on motorway & round town) and it has'nt lost any water and the black stuff has gone and the header tank is clean inside

KenONeill · 12-11-2007, 13:21

Sounds a bit like the pressure cap to me (at least as a first stop).

11-11-2007, 18:17	#1
boginhood Briskodian Join Date: Aug 2005 Location: west midlands Posts: 28 Members Car: Thanks: 1 Thanked 0 Times in 0 Posts	Head gasket Hi all. Octavia 110 tdi, lost water a couple of times from the expansion tank not sure if the presure cap is falty or the head gaskets gone. The water in the tank has a black somthing on the top, but not oily more of a powdery type of thing. With the cap off if you rev it a bit the water will rise and a few bubbles come up not sure if its the gasket or trapped air. If you put the cap on the hoses don't pressurise like you would expect if it was the gasket (unless very slight leak). If you push it on the motorway after a while the temp will rise drop and lose water out of tank only. Any ideas anyone. Cheers

11-11-2007, 20:02	#2
georged30 Briskodian Join Date: Mar 2007 Location: Greece Posts: 28 Members Car: OCTAVIA 1.6 TOUR Thanks: 0 Thanked 6 Times in 5 Posts	Re: Head gasket replace the presure cap it is the easy and cheap way to start troubleshoting.

11-11-2007, 20:04	#3
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,980 Members Car: octavia VRS Thanks: 54 Thanked 163 Times in 158 Posts	Re: Head gasket Any white gunk on the oil filler cap? __________________ Regards Martin Turbo back blueflame exhaust ,Forge 007p Dump valve, Ramair filter, Prosport boost gauge, Autobahn88 TIP, Ecu Evolution Remap, FMIC

11-11-2007, 20:50	#4
sicknote Briskodian Join Date: Oct 2007 Location: Birmingham Posts: 95 Members Car: Octavia Elegance 1.9tdi Estate Thanks: 5 Thanked 6 Times in 6 Posts	Re: Head gasket or the dipstick? __________________ Ok I know I'm old, I've just found out that they have discontinued my blood group!

11-11-2007, 21:27	#5
boginhood Briskodian Join Date: Aug 2005 Location: west midlands Posts: 28 Members Car: Thanks: 1 Thanked 0 Times in 0 Posts	Re: Head gasket Oil is fine, could the black floaty stuff in the water be from the exhaust gas, like i said its not oil but i suppose it could be carbon deposits, if you run it to temp with cap off after a while when you rev it will rise and come out the tank, with the cap on it will come out the tank if you drive it hard. If it is the head gasket are they much of a pain to do.

12-11-2007, 00:27	#6
Liverpool-Lad Briskodian Join Date: Aug 2006 Location: Liverpool Posts: 1,642 Members Car: Octavia vRS Thanks: 12 Thanked 47 Times in 47 Posts	Re: Head gasket When was the waterpump last done? They have a habit of going Pete Tong if not replaced at required intervals. __________________ 2001 Rally Red Octavia vRS...remap complete Whiteline rear ARB, Superpro dogbone bush - 225/45/17 Goodyear Eagle F1 Aysmmetrics and lots of V-Power! Smiles all 'round

12-11-2007, 12:00	#7
boginhood Briskodian Join Date: Aug 2005 Location: west midlands Posts: 28 Members Car: Thanks: 1 Thanked 0 Times in 0 Posts	Re: Head gasket Have not replaced waterpump but would it not overheat if the pump was faulty? also took it steady today (not above 2500 rpm on motorway & round town) and it has'nt lost any water and the black stuff has gone and the header tank is clean inside

12-11-2007, 13:21	#8
KenONeill Briskodian Join Date: May 2006 Location: Normally in Scotland! Posts: 11,213 Members Car: Octavia TDi110 Thanks: 65 Thanked 561 Times in 549 Posts	Re: Head gasket Sounds a bit like the pressure cap to me (at least as a first stop).

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Head Gasket	billyuk	Octavia II	1	14-09-2007 17:03
Possible Head Gasket Problem??	Amr Emarah	Favorit, Felicia, Fun and Forman	2	12-09-2007 22:45
2.0TDi Head Gasket	scrak	Octavia II	24	22-06-2007 16:35
Head Gasket Horror!	skodielove	Favorit, Felicia, Fun and Forman	37	25-04-2007 22:13
Head gasket failure?	Johnhowell	Fabia I	20	21-11-2006 18:36

Head gasket

Head gasket

Similar Threads