STD Tuning Engine No turbo pressure on 617a

No turbo pressure on 617a

No turbo pressure on 617a

 
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Baumann
Naturally-aspirated

7
06-25-2013, 04:06 PM #1
Hi

I put a Om617a in my W460 G wagon, but it really lack on power.
Put on a meter to measure the turbo boost.
It does 0,3bar at max rpm. From idle to 3000rpm there is no pressure.
This is my first turbo engine, so have no experience on this field.
What could be wrong and how to fix this?
Baumann
06-25-2013, 04:06 PM #1

Hi

I put a Om617a in my W460 G wagon, but it really lack on power.
Put on a meter to measure the turbo boost.
It does 0,3bar at max rpm. From idle to 3000rpm there is no pressure.
This is my first turbo engine, so have no experience on this field.
What could be wrong and how to fix this?

lgreeley83
Mr. Rumbles

775
06-25-2013, 11:10 PM #2
You may just need to adjust the wastegate or add manual boost controller. I would first disable the wastegate (pull off hose) and see what happens. Don't do that for long though.

If your boost goes up to 20 psi you just need to adjust or add the controller. If not something else needs looking at.

" straighten up that star on the grill, assholes."

lgreeley83
06-25-2013, 11:10 PM #2

You may just need to adjust the wastegate or add manual boost controller. I would first disable the wastegate (pull off hose) and see what happens. Don't do that for long though.

If your boost goes up to 20 psi you just need to adjust or add the controller. If not something else needs looking at.


" straighten up that star on the grill, assholes."

willbhere4u
Six in a row make her go!

2,507
06-26-2013, 10:38 AM #3
Check to make sure the exhaust manifold gasket is not bad I have a 300td wagon right now that wont make any boost because the exhaust is leaking before the turbo!

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
06-26-2013, 10:38 AM #3

Check to make sure the exhaust manifold gasket is not bad I have a 300td wagon right now that wont make any boost because the exhaust is leaking before the turbo!


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

Baumann
Naturally-aspirated

7
06-27-2013, 03:16 PM #4
(06-25-2013, 11:10 PM)lgreeley83 If your boost goes up to 20 psi you just need to adjust or add the controller. If not something else needs looking at.

It only goes to 13psi when I take off the hose for wastegate.
Does this mean that the turbo is worn out?

Exhaust gasket is tight.
Baumann
06-27-2013, 03:16 PM #4

(06-25-2013, 11:10 PM)lgreeley83 If your boost goes up to 20 psi you just need to adjust or add the controller. If not something else needs looking at.

It only goes to 13psi when I take off the hose for wastegate.
Does this mean that the turbo is worn out?

Exhaust gasket is tight.

Simpler=Better
PORTED HEAD

2,127
06-27-2013, 03:29 PM #5
The big oring connector may be loose and leaking boost too.

13psi, is fine, but it should hit higher without a WG hose. You might have clogged fuel filters too.

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
06-27-2013, 03:29 PM #5

The big oring connector may be loose and leaking boost too.

13psi, is fine, but it should hit higher without a WG hose. You might have clogged fuel filters too.


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

Baumann
Naturally-aspirated

7
06-27-2013, 03:47 PM #6
Fuel filter is brand new, injector nozzles are brand new.
Tomorrow I will adjust valves to see if this makes a difference, since people in general suggest this as a option.
Baumann
06-27-2013, 03:47 PM #6

Fuel filter is brand new, injector nozzles are brand new.
Tomorrow I will adjust valves to see if this makes a difference, since people in general suggest this as a option.

Simpler=Better
PORTED HEAD

2,127
06-27-2013, 10:19 PM #7
The all-encompassing list in random order:

Fuel strainer clear?
Fuel tank vent clear?
Primary filter clear?
main fuel filter clear?
injectors built properly?
valves adjusted properly?
chain stretch within spec?
IP timed properly?
is ALDA restricting fuel improperly?
is wastegate leaking?(you tested this with the hose removed)

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
06-27-2013, 10:19 PM #7

The all-encompassing list in random order:

Fuel strainer clear?
Fuel tank vent clear?
Primary filter clear?
main fuel filter clear?
injectors built properly?
valves adjusted properly?
chain stretch within spec?
IP timed properly?
is ALDA restricting fuel improperly?
is wastegate leaking?(you tested this with the hose removed)


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

Baumann
Naturally-aspirated

7
06-28-2013, 07:39 AM #8
I saw this youtube video, and I guess my problem could be carbon in the turbo.

http://www.youtube.com/watch?v=pYN7dUXop60
Baumann
06-28-2013, 07:39 AM #8

I saw this youtube video, and I guess my problem could be carbon in the turbo.

http://www.youtube.com/watch?v=pYN7dUXop60

 
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