Grey for Green?

An alchemy of sparks, copper wire and earth

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Robsey
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Re: Grey for Green?

Post by Robsey »

Should be on the side wall near to the coil, with two rounded 3-pin plugs connected.
One male and one female.
Unplug both from the module and connect to each other.

Also see my calculations / update above.

Taking into account your last comment -
If it is a "DF" pulley then follow my calculations.

If it is not, then adjust the timing as I originally described.

Remembering to plug the end of the disconnected vacuum pipe.
1983 Tin Top with a poorly DF and 4 speed DT box.
1987 Electrics and a DJ engine.
Maybe one day I might get it finished

SurfT25
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Re: Grey for Green?

Post by SurfT25 »

Have searched for the 3 pin circular male and female connections in modular, still can't find them.
This is a photo of my coil side, am I missing something?
Image
Have tried to tune engine without those connections,
No chance.
Have a light gun with rpm on it but setting engine back to 900 rpm after reconnecting vacum sounds like someone trying to keep engine high to stop it staling.
Maybe my gun is kaput ?
Tomorrow will try again using the spark plug hole and try to find TDC that way. Mark pulley and go from there.
Prepare for the worst but hope for the best

1984 1.9 DG WBX Autohomes hightop

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Robsey
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Re: Grey for Green?

Post by Robsey »

I have had a look on other posts for the DG engine.

I could have given mis-information, as none of the images and videos show the idle control unit.

I have worked on DF and DJ, both of which have the idle control unit.

So - I have found an Itchylinks post that says -

turn the engine so you can see the timing marks on the pulley where the aux belt is, there should be a U shape for TDC on one edge of pulley and a V shape about 7mm to the right on the other edge of the pulley, this is the 5 degrees before top dead centre mark (BTDC) mark both with tippex

Then connect your strobe light to plug lead no1 or clamp it on if it's the clamp on type, No1 cylinder is front of van right as you look from the rear.

connect the 12v power to strobe and ground to body, easiest place for 12V is the alternator bolt if it is a late van, if early van may need to get a connection to the stud in the black box.

get the leads away from the belt and pulley

start the engine

allow the choke to come off

remove the vac pipe from dizzy, (revs will drop a little) and point the timing gun at the pulley, you should see the marks, the V should align with centre of engine, that's the edge of the casting above.

if you have a rev counter you should set the idle stop to 900rpm after removing the vac pipe but if not don't worry

if it's out then you need to turn off engine, loosen pinch bolt on dizzy, restart engine and repeat, rotate dizzy until the V mark aligns with centre of engine, use rubber gloves, turn off engine and tighten without moving dizzy.

restart and check

refit vac pipe

Some strobe guns have an adjustable advance, if it has one then make sure it's set to zero or read up how to use it.
1983 Tin Top with a poorly DF and 4 speed DT box.
1987 Electrics and a DJ engine.
Maybe one day I might get it finished

SurfT25
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Re: Grey for Green?

Post by SurfT25 »

Bought the pulley off maxstu, he has a dj 2.1, does this shine a light on the situation ?
Will probably still try to find TDC via spark plug just to clarify.
Can't thank you enough Robsey.
Prepare for the worst but hope for the best

1984 1.9 DG WBX Autohomes hightop

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Robsey
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Re: Grey for Green?

Post by Robsey »

No need to thank me, that is why we visit / use the forum.

With regard to your revs..

When you disconnect the vacuum pipe, the revs may / will drop.
Turn up the idle speed to 900 rpm whilst you set the timing.

When finished, refit the vacuum pipe.
The revs may / will increase again.

Turn down the idle revs back to 900 rpm.
1983 Tin Top with a poorly DF and 4 speed DT box.
1987 Electrics and a DJ engine.
Maybe one day I might get it finished

SurfT25
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Posts: 280
Joined: 26 Oct 2019, 21:19
80-90 Mem No: 17059
Location: Swansea

Re: Grey for Green?

Post by SurfT25 »

Not just a novice but a numpty too.
Don't want to mention this but have to for all those who are scratching their heads and all the novices trying to tune their engine.
I have two strobe guns, tried the first newer version that attaches to the spark plug and lead. Didn't fit.
Went to older model with rpm on it attached to my spare battery and put connection on cylinder 1 lead, works.
As above tried and failed to tune engine.
Today bought new plugs that Haynes manual says to use with a grey labled coil.
Put plugs in left side of engine went to do cylinder 1
( below tube from filter to carb)....
Hadn't reconnected the lead from attempt with 1st strobe gun :shock: :oops:
No wonder it sounded like it was trying not to stall and no power. Been driving on 3 cylinders.
As Robsey has mentioned "Every day a school day" and thanks to the help I've got it going and sounding much better, bonus too my light has stopped flashing :ok
Prepare for the worst but hope for the best

1984 1.9 DG WBX Autohomes hightop

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ajsimmo
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Re: Grey for Green?

Post by ajsimmo »

Just to clarify, the DG doesn't have an idle stabilization unit.

Do: CT, CU, DF, DJ (and presumably 1.9 Digijet equivalents GW, DH)
Don't: DG, MV (and probably some other Digifant rare Swiss thing)

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ajsimmo
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Re: Grey for Green?

Post by ajsimmo »



SurfT25 wrote:Bought the pulley off maxstu, he has a dj 2.1, does this shine a light on the situation ?

Nope. A DJ would be 10° BTDC.
I suppose it does give us some extra information - that Stu had several pulleys.

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