4BD1T - high-revving, shutdown problem?

**EchiDna** · 1st December 2008, 12:14 AM

Hi guys, my 4BD1(after market T) decided on startup today to run straight up to the governor for about 1 minute and wouldn't shutdown, then shut itself off after about a minute (it's still on a pull stop cable while I'm living O/S *sigh*. My dad who was driving it freaked out a tad given he had not experienced such a thing before... not that I can say I have either!

and before you ask, yep the problem didn't repeat after trying it again - started normally and shutdown as expected....

ideas?

I thought possible sticky throttle linkage, but he reckons it worked fine...

**Bearman** · 1st December 2008, 06:48 AM

Sticky governor maybe

**JDNSW** · 1st December 2008, 08:03 AM

Possibility of getting oil into the intake from the turbo bearings. If this is the case it is a very dangerous situation, and is only likely to get worse. The symptoms as described could indicate that oil is getting there after shut down, but not enough to be a worry while running (yet) - does it by any chance have an accumulator to keep pressure up to the turbo bearings after the engine is shut off?

John

**EchiDna** · 1st December 2008, 11:34 PM

thanks guys...

well I shall pass both of these back to the current driver to have a look - JD you might be right, it has done a lot of sitting around in the last 18 months, might not have even been started for a month or so. Any simply explained procedure to perform a check for this? or is it a demount the turbo job?

I hope you are wrong and Bearman is correct though!

Roverray · 2nd December 2008, 12:12 AM

If it is cable throttle it could be simply a sticky cable after 18 months standing.

**JDNSW** · 2nd December 2008, 06:32 AM

Originally Posted by EchiDna

thanks guys...

well I shall pass both of these back to the current driver to have a look - JD you might be right, it has done a lot of sitting around in the last 18 months, might not have even been started for a month or so. Any simply explained procedure to perform a check for this? or is it a demount the turbo job?

I hope you are wrong and Bearman is correct though!

Not sure how easy to do on that installation, but take the pipe from the turbo to the intake manifold off - if it was oil from the turbo the inside of this will be oily - it should have no trace of oil.

John

**rovercare** · 2nd December 2008, 10:28 AM

Originally Posted by JDNSW

Not sure how easy to do on that installation, but take the pipe from the turbo to the intake manifold off - if it was oil from the turbo the inside of this will be oily - it should have no trace of oil.

John

Unless of course you've fed the breather from the rocker cover into the intake upstream of the turbo

Roverray · 2nd December 2008, 11:09 AM

Originally Posted by rovercare

Unless of course you've fed the breather from the rocker cover into the intake upstream of the turbo

could well be right = I recently started a turbo phaser perkins engine that had been sitting a couple of years-- only 400 hrs total since I installed it new in a tractor for a friend. This was after I released a stuck turbo seal.
When I got it going it had masive blowby but fortunately it vents to air not above the turbo. Has now settled

mmm !! it would go well in a MK3 inter ---leave the underdrive - drive- overdrive box on the bellhousing == put in a 3 speed powershift ----
must go to inter chapter and raise some bloodpressure

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4BD1T - high-revving, shutdown problem?

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