200tdi runaway

bettsy64 · Nov 29, 2015

Hi all quick question before I head up to the yard to strip the top end. Just put a 200tdi that had been sitting for about a year in my 90. Started instantly on first turn over but runs away kicking out blue smoke, so presuming running on its own oil. When I take the intercooler to inlet hose off does the same thing so not turbo seals right? When I loosen the oil Filler cap and start no sign of breathing so rings are kosher right? Which means it could only be cracked head or head gasket right??? Any help appreciated. Harry.

julianf · Nov 29, 2015

Im inexperienced, but, when mine (300tdi) was burning oil, stem seals were also suggested.

It was not them, in my case, and im unsure if enough oil could pass to run away anyhow.

Turboman · Nov 29, 2015

julianf said:
Im inexperienced, but, when mine (300tdi) was burning oil, stem seals were also suggested.

It was not them, in my case, and im unsure if enough oil could pass to run away anyhow.

I agree, not seen them cause a runaway. Usually turbo, breathers, or oil level rising in the engine.

bettsy64 · Nov 29, 2015

I

julianf said:
Im inexperienced, but, when mine (300tdi) was burning oil, stem seals were also suggested.

It was not them, in my case, and im unsure if enough oil could pass to run away anyhow.

I think I've got a set of stem seals somewhere I'll fit them just in case. Cheers

bettsy64 · Nov 29, 2015

So

Turboman said:
I agree, not seen them cause a runaway. Usually turbo, breathers, or oil level rising in the engine.

So high oil level would cause it? How would the oil be getting into the chamber?

Turboman · Nov 29, 2015

bettsy64 said:
So

So high oil level would cause it? How would the oil be getting into the chamber?

It just does, common on tractors when the water is running into the oil via bottom of liners.
Have you checked the throttle cable and linkages around the fuel pump. If it has been sitting for a while, maybe something has seized up?
And try pulling the breather pipes off and having a look inside.

bettsy64 · Nov 29, 2015

Turboman said:
It just does, common on tractors when the water is running into the oil via bottom of liners.
Have you checked the throttle cable and linkages around the fuel pump. If it has been sitting for a while, maybe something has seized up?
And try pulling the breather pipes off and having a look inside.

Yeah I've checked the fuel pin and pump for seizures because it actually turns off via the key still? But definitely blue smoke. Il check breathers. Cheers

julianf · Nov 29, 2015

If the engine was stored on its side, could there be oil in the head etc. that's working through, rather than an actual problem?

Turboman · Nov 29, 2015

bettsy64 said:
Yeah I've checked the fuel pin and pump for seizures because it actually turns off via the key still? But definitely blue smoke. Il check breathers. Cheers

Not much of a runaway if it turns off at the key. Proper runaway fills the whole street with smoke and results in total destruction of engine!

Turboman · Nov 29, 2015

julianf said:
If the engine was stored on its side, could there be oil in the head etc. that's working through, rather than an actual problem?

That would be my guess too, smoke will clear when it has been running for a while.

bettsy64 · Nov 29, 2015

Turboman said:
Not much of a runaway if it turns off at the key. Proper runaway fills the whole street with smoke and results in total destruction of engine!

Believe me it fills the entire area with smoke, and revs hard enough to cause total destruction. I've only let it run for a few seconds though. Maybe it's a small leak and the fuel is aiding it? I'll have a tinker

bettsy64 · Nov 29, 2015

Turboman said:
Not much of a runaway if it turns off at the key. Proper runaway fills the whole street with smoke and results in total destruction of engine!

Believe me it fills the entire area with smoke, and revs hard enough to cause total destruction. I've only let it run for a few seconds though. Maybe it's a small leak and the fuel is aiding it? I'll have a tinker

Turboman · Nov 29, 2015

bettsy64 said:
Believe me it fills the entire area with smoke, and revs hard enough to cause total destruction. I've only let it run for a few seconds though. Maybe it's a small leak and the fuel is aiding it? I'll have a tinker

Be careful with that, if it starts finding enough oil to sustain running, it wont turn off!

julianf · Nov 29, 2015

Something close to hand to block the air supply may be wise?

If youve only run it for seconds, that really sounds like it residual to me. Seconds does not seem long enough (in my limited experience) to start pressurising oil due to breathers etc.

When mine was leaking through the turbo (due to engine pressurisation - due to blocked breathers) i had to give it about 5 mins of hard driving before the issue. I know yours isnt leaking from there, but it still seems like, if youre lucky, it may clean out on its own?

A tiny amount of oil can cause a lot of smoke - but you need some way of blocking the air, reliably, in case you do actually get a run away situation (ie wont stop when the stop solenoid closes)

bettsy64 · Nov 29, 2015

I've just ran it for around 10 minutes and no smoke has cleared. If anything more smoke arises

bettsy64 · Nov 29, 2015

julianf said:
Something close to hand to block the air supply may be wise?

If youve only run it for seconds, that really sounds like it residual to me. Seconds does not seem long enough (in my limited experience) to start pressurising oil due to breathers etc.

When mine was leaking through the turbo (due to engine pressurisation - due to blocked breathers) i had to give it about 5 mins of hard driving before the issue. I know yours isnt leaking from there, but it still seems like, if youre lucky, it may clean out on its own?

A tiny amount of oil can cause a lot of smoke - but you need some way of blocking the air, reliably, in case you do actually get a run away situation (ie wont stop when the stop solenoid closes)

It's still turning off by the key after 10 mins?

bettsy64 · Nov 29, 2015

Turboman said:
Be careful with that, if it starts finding enough oil to sustain running, it wont turn off!

It's not a problem I can squash an intercooler pipe to stop it

Kwakerman · Nov 29, 2015

bettsy64 said:
It's not a problem I can squash an intercooler pipe to stop it

You wont be able to when the turbo is boosting at max rpm

Jonnyb1990 · Nov 29, 2015

If it runs away with its self, shove a CO2 extinguish down the turbo intake, fastest way to stop it without blowing it up !

bettsy64 · Nov 29, 2015

Right so when I disconnect fuel completely it slowly dies. It's like the throttle is stuck open if that's possible?

200tdi runaway

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