V200 Merc 2.4 Rough Idle and then dies when put into gear

[mrichartz]

Still curious if you have access to another compression gauge?

[bimmer1]

Good idea swabbing the boxes. I´ll try that.
I think I do have a DVA meter (see picture), can I use that?
I must admit that I feel more confident when it comes to mechanical issues (internals, carbs, etc), than electirical issues but I will do my best to learn from this.
My meter:

What must I measure with the Multi meter to find the cause of this issue?

Bimmer1

[bimmer1]

The pressure gauge I have is to be honest a cheap one. I will try a source a better one.
By the way. Best practice when measuring compression? Hot/cold? Open throttle or closed?

Bimmer1

[Dave Strong]

Good idea swabbing the boxes. I´ll try that.
I think I do have a DVA meter (see picture), can I use that?
I must admit that I feel more confident when it comes to mechanical issues (internals, carbs, etc), than electirical issues but I will do my best to learn from this.
My meter:

What must I measure with the Multi meter to find the cause of this issue?

Bimmer1

Thats just a multi meter, can use to measure resistance but not to measure peak running voltage.

Dave

[Dave Strong]

The pressure gauge I have is to be honest a cheap one. I will try a source a better one.
By the way. Best practice when measuring compression? Hot/cold? Open throttle or closed?

Bimmer1

I do it cold, throtle opening never seems to make much difference. Whatever way you do it always do it the same way.

Dave

[mrichartz]

Since checking against what you got before (100psi)
Like Dave said do it the same way you did before..
And other then cranking it over alot more it's usually not that much different+-...unless you have something wrong.
Oh but don't check with extra oil etc like in spring w fogging oil.. only mention because just had someone do that...

[rgsauger]

Yank all spark plugs, peg the throttle, screw in the gauge, and give her a whirl.

[rgsauger]

Forgot to add...hook spark plug wires to tester or put spark plugs in the wire boots and ground the bodies of the plugs.

[bimmer1]

Swabbing the Switch boxes didn´t get me any further since the left bank is still not firring. I guess the stator is the next step and since I have another V6 merc that I´m using for parts, I´ll try taking the stator from the part engine and move it to the V200.
Speaking of the engine for parts. Maybe some of you guys can help me here. The serial (on the mid) is 5531531 on the part engine.

The cowl says 225 and it has a choke plate with shutters that are operated by a small motor. When checking the serial online I get nothing. Any ideas?

Bimmer1

[Merc 2.5]

1st I've never seen stator kill 1 bank. Possible I guess but I dont think so , trigger yes , so u swapped boxes around and was same ?

[Merc 2.5]

Also try add a "0" at beginning of serial when u type it in

[bimmer1]

I also think it´s highly unlikely since the stator is only 2 years old. I doubt it is the Ignition coils, what are the odds of 3 of them failing at the same time.

[Dave Strong]

Stator

Dave

[bimmer1]

Is there a way to tell if it is the stator or not without replacing it? Can I visualy or my measuring somthing tell if the stator is the bad guy here? I will remove the flywheel asap to check if something obvious can be seen.
Bimmer1

[Dave Strong]

Is there a way to tell if it is the stator or not without replacing it? Can I visualy or my measuring somthing tell if the stator is the bad guy here? I will remove the flywheel asap to check if something obvious can be seen.
Bimmer1

DVA is best but can do ohm tests as per manual.

Dave