Yahweh tribute bike

[wally]

In between waiting for primer to dry on my fridge project, I started relocating the wires.

Also oiled the pods, installed petcock, plumbed vacuum and fuel line, so if all goes well, she will fire up tomorrow! Still some odds and ends to do: fit chain, tune carb, hook up gauge lights and fix connectors to flasher unit (which I broke...).

Wiring before:

And after:

 

[Guest]

Good stuff Wally!

Gotta say though that if I had someone do electrical work for me and left it like that I wouldn't be happy! Even if the sidecovers were going on there's no need to leave them flapping in the breeze like that...

That green ground wire is shocking! It should run up to the top tube, then down inside the side tube out of sight... and it's not going to get a good ground where it is either as it's on a painted surface... It also should be black without the yellow insulation on the ring terminal to blend in better... Suzuki grounds are black or black with white tracer...

Just my 2 cents though... so feel free to disregard if it works for you

 

[wally]

Understand my frustration and disappointment?
It took 2 months to get done, plus I had to rent a trailer to collect, so I was just ready to pack up and go by that stage...

I don't have the knowledge or tools o have done this and usually he is very tidy.
Not sure what his deal was this time around.

I will replace the ground wire later. I just want to get it running.
My frustration levels are done!

 

[Guest]

Understand the frustration for sure Wally! Especially if he normally does good work... that's just disappointing...

As for the need to ride it... yeah I know that feeling well!

 

[wally]

Got fuel, filled the tank, primed the carbs and


NOTHING...

Changed petcock out, as first one was dripping.
Checked float bowls - it gets fuel, checked plugs, cleaned and there is no spark.
So that means somewhere it goes missing.
Right hand coil gets a bit hot with cranking, left one cold.

Had a backfire or two through the exhaust.
Had a brief fire initially and then never again...

Cheesed off beyond belief...

 

[Guest]

Gaaaaah! Man that's frustrating...

So you definitely get 12V to both coils?

Do you know if your electrical guy did things like checking the spark plug caps out?

If it's cranking I'd suggest your fuse is ok unless he did something weird with it.

 

[wally]

Haven't checked the volts.

I know he had trouble getting both coils to stay running.
Fuse is still in tact.

I just pulled plugs out and grounded to check for spark, of which there was none. He had brhe bike running for long sections testing coils.

I will give him a call tomorrow...

 

[Guest]

That sounds weird... he had troubles getting them to stay running but he had it running to test them? I wonder if it's as simple as a connector has come loose during the trailer ride back?

 

[wally]

One coil would cut out after a few mins. He managed to get it fixed.
I do trust what he says, despite the untidy work.

I will have to make some time to check.

Moving hiuse end of June, so i am trying to get as much done before the move.

 

[Guest]

Fingers crossed it turns out to be something nice and simpile...

 

[wally]

On the pick ups it measures around 64 Ohms for both sides, which is correct (supposedly).

According to electrical guy it could point to actual igniter/cdi unit being faulty.
Sound right? He has another one I can borrow to test. He also suggested getting Honda units which will fire each coil individually, as opposed to the Suzuki unit which controls both coils on one box.

I have some backfire through exhaust, occasional loud pop and even a flame or two every now and then. It sounds like it wants to start, but not.

Also going to clean another set of carbs and fit them over the weekend, as the choke mechanism on current one doesn't work.

 

[Guest]

That sounds right for the signal generator 60 - 80ohms each side from memory.

The ignitor dying on these is a little too common unfortunately which is why I went the Dynatek route. You can always see if there's a DS3-3C kit on eBay cheap somewhere...

There are tests in the Clymer for testing the signal generator which are worth trying, I can't remember it off the top of my head.

Not sure on the Honda setup but if he knows his stuff he should able to adapt it to work, just make sure he gives you lots of info on what parts he's used etc.

 

[wally]

He says that any of the CB750 series Cdi units will do the trick. Just something about a common connecting wire.

I am going to borrow a Suzuki unit from him to test first and see if it is indeed the problem.
Is the manual on Bascliff's site the Clymer version?

 

[Guest]

Interesting... if you do go that path get as much info about it as you can, I've never heard that before...

BassCliff has both the Clymer and Haynes on there.

 

[wally]

I tested (as best I could understand) according to Clymer manual and I can say with 99% certainty it is the igniter box. Zero spark going through, but I will borrow a replacement unit to test for sure.

The guy said that the Honda units control each coil separately and will still alow the bike to run, unlike the Suzuki unit that controls both coils and if it is faulty, there will be no spark.

So at least a bit of progress...

 

[Guest]

Cool, and yeah I won't be surprised with the ignitor... they seem quite flaky.

 

[wally]

Couldn't find the problem - even with a borrowed igniter box.

Going back to electrical dude on Wednesday to sort out and get running!

 

[Guest]

Well as far as things go, that's probably a good thing that the borrowed box didn't just fix it

Maybe he can make up for the mess he made?

 

[wally]

Got the bike back. It runs!

Apparently the carbs were quite blocked (after I cleaned them last year).
Anyway...left hand intake o-ring ended up in the carb! Not sure how that happened...

Dash lights work:

I have to mod the mounting for the rev counter. Guys made up incorrect banjo fitting for the brake line....

Electric dude also put some diodes on the coil lines.

These flash when there is power on the coils. This will make it easier to diagnose in the future.

We have some horrible stormy weather, but will try and get a video tomorrow.

 

[Guest]

Excellent stuff Wally... gummed up carbs hey? And here I was going off at your electrical dude

Glad she's running, keen to see the video