4BD1T - high-revving, shutdown problem?

[EchiDna]

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]

Sticky governor maybe

[JDNSW]

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]

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]

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

[JDNSW]

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]

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]

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