large amounts of oil from exhaust

Post by **stom** » 22 Jan 2007, 14:58

Hi, not had my van for long. its a 81 T25 2lt AC.

Broke down the other week, with the loss of oil and power. the garrage has told me to find a new engine! It starts, runs and sounds fine, (best it ever has). Symtoms;

Oil leaking from whats seems several places around the crank case
Alot, but not masses of smoke
But, masses of oil spray from exhaust (note, must clean neighboughs car)

Great site and forums. learnt lots already, Will be here often!

Cheers

Post by **Westy.Club.Joker** » 22 Jan 2007, 16:16

Pull engine, strip engine, fix broken parts, refit engine, clean neighbors car, drive `van

Post by **Hacksawbob** » 22 Jan 2007, 18:14

oil spray from exhaust? thats a new one, oil getting past dodgy piston rings and into upper cylinder or past worn valve guides, where normally it would be burnt off in the combution process and come out as blue/black smoke. oil coming out the exhaust may indicate cylinder not firing? doesn't sound healthy though. AC engines are not available from VW anymore so you will be looking at one of the various reconditioners, vege, remtec, etc or an independant rebuilder.

Post by **stom** » 22 Jan 2007, 19:28

so the oil gets in to the cylinder through piston ring, push rod or valves.
how could this be connected with the leaks and the garage saying that its termial?

shall i just delve in when i get the manual?

Post by **Westy.Club.Joker** » 22 Jan 2007, 21:06

What Bob`s saying is, if the oil is getting into the cylinder bore via the rings, cracked piston or valve oil seals, and then out of the exhaust valve and blowing out the tail pipe, it should be getting burnt during combustion and coming out the back as blue smoke.

If it`s coming out as oil spray, then either,
a) the oil isn`t being burnt, that cylinder isn`t firing, and it can`t be "running fine, better than ever" (unless it was really bad before

)
b)it`s getting into the exhaust system and blowing out the back AFTER combustion, so it narrows it down a bit. Maybe a cracked head is allowing oil into the exhaust manifold?

Post by **ghost123uk** » 23 Jan 2007, 09:56

But if oil is leaking out of other places, that also indicates allot of crankcase pressure as well. This is usually caused by worn or broken rings.

This all points to a well knackered motor

It might be worth getting a compression test to pinpoint the problem cylinder, then take off the head and have a look, but I would be preparing to get the credit card out and either find a re conditioner with a good reputation or look for a known good used motor if money is tight.

Post by **Tex Ritter** » 23 Jan 2007, 11:49

stom wrote:Hi, not had my van for long. its a 81 T25 2lt AC.
But, masses of oil spray from exhaust (note, must clean neighboughs car)
Cheers

Is the oil spray from the exhaust -you sure it's not black sooty exhaust gases?- there all the time or just on initial start up?

Tex R

Post by **stom** » 23 Jan 2007, 13:04

its there all the time, and its deffenatly spay. Like bob said, its not burning. The potential problems in the crank case sound serious.

Thanks for all the replies.

Does anyone know of a 2lt AC for sale?

Post by **Westy.Club.Joker** » 23 Jan 2007, 17:43

I would investigate it further before you go pulling it out. Is it really running great? If so, what can cause the problem you`ve got? Without seeing it it`s hard to say.

Post by **stom** » 23 Jan 2007, 18:24

will recive the manual soon, and start at the top. unless i find a good engine in the mean time.

Cheers

PS will probably be back soon

Post by **Westy.Club.Joker** » 23 Jan 2007, 21:52

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large amounts of oil from exhaust

large amounts of oil from exhaust

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