grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 21, 2012 20:27:40 GMT
|
Anyone 'up' on aircooled lumps...?  My T25 has a 2 litre flat 4 with hydraulic tappets. i got a dry tappet noise on the r/hand bank and its throwing oil out of the left hand side rocker cover straight on the exhaust.. i have been told they run dry if stood and a 5 mile journey should sort it out..its a common fault.. bit reluctant too, with oil leak... Anyone had this problem with a bug/bus ? |
| |
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
|
|
|
|
|
Jul 21, 2012 21:55:47 GMT
|
|
Wheres the oil actually coming from?
Is it getting past the rocker cover gasket or from one of the pushrod tubes?
Dry tappets are quite common and usually quiten up with a few miles and an oil change.
|
| |
Koos
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 21, 2012 22:13:09 GMT
|
|
mdh....thanks for reply..oil is coming through rocker cover gasket. Its done this before but cleared with an oil change, but not this time. When engine is quiet and no tappet noise, engine becomes oil tight.. On various sites people have complained of same probs, even youtube threads..
But..I'm wondering if i have oil pressure problems. I took pressure relief valve out, a plunger and a spring, it seemed to be moving in its tube ok, I'm guessing this bypasses oil cooler when cold?
|
| |
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 22, 2012 18:24:59 GMT
|
|
Gonna hit it with a big stick, wont help, but will make me feel better !
|
| |
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
|
|
|
Jul 22, 2012 22:23:24 GMT
|
|
LoL!!
VW rocker cover gaskets ALWAYS leak. The covers are held on with a spring clip thingy, so check thats on properly. Otherwise change the gasket, they're really cheap.
Last time I did some I silicon'd both sides of the gasket, and that stopped it weeping.
Now put the stick down!! ;-)
|
| |
Koos
|
|
|
|
|
Jul 22, 2012 23:08:31 GMT
|
i had those very symptoms on my type 4 lump. you need to re-adjust the lifters. you should be able to get the info from a haynes book of untruth. if you cant lay your hands on one give me a shout and il try to remember the procedure for you. its not a difficult job, should only take half an hour or so.  |
| |
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 22, 2012 23:32:04 GMT
|
|
yes, got the haynes, i have a look tmorro..
you adjust clearances on hydraulic lifters?
I don't think rocker gasket is the problem, it just seems to be too much oil in the left bank, as its dry and knocking on the right..
as i said, its done it before, rattled and leaked oil, then when tappets have gone quiet, its stopped the leakage of oil...
its doin me head in!...
Have put the big stick on hold, till i have thumbed the haynes....
|
| |
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
|
|
|
|
|
its more pre loading them rather than setting a clearance. i cant remember how many turns the haynes says once the screw touches the lifter, but i did one and a half turns on mine, after reading it on a link i cant seem to find at the mo. ive lost no oil past the rocker gaskets since. |
| |
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 23, 2012 22:29:11 GMT
|
|
oh, so you had a similar oil leakage problem when un adjusted? -why does it do that? let me search that there haynes !
|
| |
Last Edit: Jul 23, 2012 22:37:31 GMT by grahamj
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
|
|
|
Jul 23, 2012 22:45:24 GMT
|
i don't know why they do it, but yes, my type 4 was leaking severely from both sides when i got it. someone had tried the silicon trick to stop it but the pressure just pushed it past anyway. i reset the preload and its been fine ever since. no oil has passed the rocker gaskets. i used info from the haynes book and this link clicky to sort it. |
| |
|
|
|
|
|
Jul 23, 2012 22:48:24 GMT
|
|
i uesed to work on aircooled moters as an ex-dubber,carry a can of oil,keep an eye on the oil light,if it flashes...stop,top it up ...do the five miles......somestimes the engine gets hot enough and seals the gasket ...it works about 60-75 %of the time.......just carry oil...whats to lose???good luck
|
| |
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 23, 2012 23:24:59 GMT
|
|
I blag some trade plates of a good mate, as i got no tax and i drive it 10 miles tmorro, bloody annoying coz its only done 45k on this engine and it purrrrrs when it right....ticks over so quietly.. or did !
|
| |
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
grahamj
Part of things
Old enough to know better....
Posts: 274
|
|
Jul 24, 2012 13:37:33 GMT
|
|
Update.. took it for a run, still no go..
Took o/side rocker cover off. Number 1 cylinder (rear) Exhaust rocker arm, banging away,a big gap!
Found very small lump of metal what rocker rocked on... has broken off..fell on the floor... .. (looked like a tiny watch battery) End of valve I guess?
I adjusted the clearance to suit and its sweet as a nut..
Still leaking a bit from other bank- i may have 2 problems all along..
|
| |
Last Edit: Jul 24, 2012 21:38:01 GMT by grahamj
2005 VW T5 Dayvan
1997 VW T4 Dayvan
Vauxhall Nova 2 Litre Redtop
1970 Moggy Van..
94 vw Passat Bus
1985 Vauxhall Nova Base show car
1987 Vauxhall Nova 1.4 16v XE Rallycar
|
|
