STD Tuning Engine kkk wastegate stuck open

kkk wastegate stuck open

kkk wastegate stuck open

 
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scrubs
GTA2056V

92
05-03-2015, 01:31 PM #1
Hi,after boat loads of reading I've found my k26 wastegate to be stuck open I believe.

I can blow through the hose without any restiance leaving me to this conclusion.

Any ideas on how to get it unstuck?
I've backed the wastegate out 3 turns and the stud feels very loose also.

Haven't found a rebuild kit yet if it's going this direction.

Any help or suggestions are welcome Thank you.
scrubs
05-03-2015, 01:31 PM #1

Hi,after boat loads of reading I've found my k26 wastegate to be stuck open I believe.

I can blow through the hose without any restiance leaving me to this conclusion.

Any ideas on how to get it unstuck?
I've backed the wastegate out 3 turns and the stud feels very loose also.

Haven't found a rebuild kit yet if it's going this direction.

Any help or suggestions are welcome Thank you.

barrote
Superturbo

1,627
05-03-2015, 02:00 PM #2
wich hose do u blow to come at such a conclusion? pics !!

FD,
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barrote
05-03-2015, 02:00 PM #2

wich hose do u blow to come at such a conclusion? pics !!


FD,
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scrubs
GTA2056V

92
05-03-2015, 02:12 PM #3
Blew through the hose going to the wastegate.
scrubs
05-03-2015, 02:12 PM #3

Blew through the hose going to the wastegate.

hooblah
Holset

401
05-03-2015, 02:24 PM #4
Merc wastegate actuators usually operate on vacuum, not pressure. If you can suck like a whore then you might be able to find out Wink
hooblah
05-03-2015, 02:24 PM #4

Merc wastegate actuators usually operate on vacuum, not pressure. If you can suck like a whore then you might be able to find out Wink

05-03-2015, 03:04 PM #5
Uhm - 617 & 603 KKK chargers have pressure actuated wastegates... They don't have a hose, though Big Grin

____________________________________

'88 300CD Turbo Coupé - OM603
DiseaselWeasel
05-03-2015, 03:04 PM #5

Uhm - 617 & 603 KKK chargers have pressure actuated wastegates... They don't have a hose, though Big Grin


____________________________________

'88 300CD Turbo Coupé - OM603

scrubs
GTA2056V

92
05-03-2015, 03:37 PM #6
Arrrrgggg newbie that I am....for sure.
so why am would my boost be so high during acceleration, up to 20lbs.
Maybe I've been misleading myself, I thought 8-12 lbs boost was the limits when correctly working.

I have spent hours reading here but that by no means gives me knowledge of what I'm doing/trying.

Background,
om617 from 84 wagon put into a Land Rover Defender 110.

All I've added, by recommendation was a manual boost controller.

I've also added a functional snorkel.

Future add on will be a IC and a better IJ pump when one becomes available.


Have adjusted valves too

It runs very well up through the RPM'S but the boost level has my attention.

At 63mph it's at 10-12 at say 68-70 it's around 18-20.

Can't figure out how to post pictures would if I could.

And Thank you for your replys/time with this.

I'd like to learn but need proper directions
scrubs
05-03-2015, 03:37 PM #6

Arrrrgggg newbie that I am....for sure.
so why am would my boost be so high during acceleration, up to 20lbs.
Maybe I've been misleading myself, I thought 8-12 lbs boost was the limits when correctly working.

I have spent hours reading here but that by no means gives me knowledge of what I'm doing/trying.

Background,
om617 from 84 wagon put into a Land Rover Defender 110.

All I've added, by recommendation was a manual boost controller.

I've also added a functional snorkel.

Future add on will be a IC and a better IJ pump when one becomes available.


Have adjusted valves too

It runs very well up through the RPM'S but the boost level has my attention.

At 63mph it's at 10-12 at say 68-70 it's around 18-20.

Can't figure out how to post pictures would if I could.

And Thank you for your replys/time with this.

I'd like to learn but need proper directions

scrubs
GTA2056V

92
05-03-2015, 04:32 PM #7
FWIW air can be pushed both ways easily.
scrubs
05-03-2015, 04:32 PM #7

FWIW air can be pushed both ways easily.

Volker407
naturally aspirated

157
05-04-2015, 12:18 PM #8
If you can easily blow  air THROUGH the wastegate it is broken if you ask me.
There is a diaphragm inside which actuates the wastegate valve and should not let air through.

If the wastegate is broken in that way  it is always completely closed and you´ve got as much intake pressure as possible.

As mentioned above the wastegate on a OM617A works with pressure, not vacuum.

The stock pressure is specified with 0,7 - 0,8bar = 10,2 - 11,6psi

With a stock pump everything above ~15psi is mostly   just hot air you don´t need


Gruß
Volker
Volker407
05-04-2015, 12:18 PM #8

If you can easily blow  air THROUGH the wastegate it is broken if you ask me.
There is a diaphragm inside which actuates the wastegate valve and should not let air through.

If the wastegate is broken in that way  it is always completely closed and you´ve got as much intake pressure as possible.

As mentioned above the wastegate on a OM617A works with pressure, not vacuum.

The stock pressure is specified with 0,7 - 0,8bar = 10,2 - 11,6psi

With a stock pump everything above ~15psi is mostly   just hot air you don´t need


Gruß
Volker

barrote
Superturbo

1,627
05-04-2015, 01:45 PM #9
Wink pretty much basic tuning.....

FD,
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barrote
05-04-2015, 01:45 PM #9

Wink pretty much basic tuning.....


FD,
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scrubs
GTA2056V

92
05-04-2015, 07:13 PM #10
Thanks, how can it be fixed?
Haven't found a repair thread yet, been looking every search word I can think of.
scrubs
05-04-2015, 07:13 PM #10

Thanks, how can it be fixed?
Haven't found a repair thread yet, been looking every search word I can think of.

scrubs
GTA2056V

92
05-04-2015, 07:52 PM #11
Starting to get the SOL feeling about getting this rebuilt
scrubs
05-04-2015, 07:52 PM #11

Starting to get the SOL feeling about getting this rebuilt

Duncansport
Holset

526
05-05-2015, 11:32 AM #12
So if your wastegate was stuck open you would have no boost....
Duncansport
05-05-2015, 11:32 AM #12

So if your wastegate was stuck open you would have no boost....

fordheaded
K26-2

38
05-05-2015, 06:37 PM #13
I think we need pictures to pursue this further. Which hose?
fordheaded
05-05-2015, 06:37 PM #13

I think we need pictures to pursue this further. Which hose?

scrubs
GTA2056V

92
05-05-2015, 07:28 PM #14
I'd like to post a picture haven't figured it out yet from phone.

It's the hose from the actuator that allows air to pass both ways.

Have found a shop that can replace the diphram and rebuild it. Put a WTB also out for one too.
scrubs
05-05-2015, 07:28 PM #14

I'd like to post a picture haven't figured it out yet from phone.

It's the hose from the actuator that allows air to pass both ways.

Have found a shop that can replace the diphram and rebuild it. Put a WTB also out for one too.

 
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