hi all
spent another 3 hours trying to get the engine running correctly still no joy i have attatched a pic could you please advise if the spark plug leads are round the right way.

gravity fed the engine tonite started up ok then after about 15 mins it started running a bit rough idle started dropping gradually .i was pulling a lead off one by one you can here the lead sparking on the plug , once the lead removed from plug it runs very slightly worse not much i put new plugs in saturday again (thats eight sets now) .

only had it running for a bit saturday and sunday trying to sort it out and tonite plugs are black but not wet,

thanks
simon
Rescued attachment SP_A0166.jpg

also any got any pics of how they have mounted there coils ? and can you get plug leads as a set or do you make them up?
cheers
Rescued attachment SP_A0161.jpg

i don't know, but it doesn't look right with those 2 leads stretched over the engine. i'd say 1 coil looks after cyls 1&2, the other does 3&4

I only had to lengthen 1 lead, the rest were OK.

You can pull the ends off 1 lead (carefully) and just replace the actual lead bit - I think I have some spare length in the garage.

Hope pic helps, you can see the numbers on the coils and which plug they go to.

This may be relevant to which wires you've connected to which coil - I'll see if I can find out from my wiring diagram.


Description

Pat...

[Edited on 20/8/08 by Avoneer]

1 coil does 1 & 4 and the other 2 & 3 - but I still think it's relevant to which wire you have to which coil...

Pat...

Yellow with thin blue wire goes to the coil pack that supplies 1 & 4.

Blue with thin yellow wire goes to the coil pack that supplies 2 & 3.

That should help.

Pat...

looks like the engine is running on cold start, or extremely rich, either way as the engine warrms up it will run rougher and rougher.

1/4 and 2/3 looks okay so as long as you've got the coils connected to the right signal wire you should be okay.
Might just be the mixture being wrong.

Job for a colortune or wideband lambda I reckon!!!

Personally I'd hook up the proper pump first rather than gravity feeding it. Bike carbs can be a bit pinickity re fuel pressure (hence problems when people run red-top pumps on them)...

Where is the CDI unit mounted?

Ideally it needs to be on a good heatsink as it will get hot, they are very prone to failure.

I forget the model the replacement should be taken from, but iirc it was a 500cc.

The CDI will be fine and you need the blade one.

Are you thinking of the Rectifier - that's the bit prone to failure and a Superdream one is normally used instead.

Nothing to do with the coils though.

Pat...

quote:

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Originally posted by the_fbi
Where is the CDI unit mounted?

Ideally it needs to be on a good heatsink as it will get hot, they are very prone to failure.

I forget the model the replacement should be taken from, but iirc it was a 500cc.

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Twist!

quote:

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Originally posted by Avoneer
Are you thinking of the Rectifier - that's the bit prone to failure and a Superdream one is normally used instead.

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thanks for the info will check it out over the next couple of days
simon

quote:

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Originally posted by mkblade
also any got any pics of how they have mounted there coils ?

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Indy Engine